Database Develop

External Power Pack alternatives you might be interested in

Ok i thought someone will mention this by now but Philips makes some really cool looking and extremely portable power packs for a wide range of portable devices including laptops(and netbooks) with a LARGE collection of accessory tips that comes packaged with it. For those looking to buy external batteries, I suggest you look into
Philips Power2Go Rechargeable power packs
Personally i have the SCE7640/12 which has the largest DC output of 19V and a normal usb(power)port to charge many other portable devices with there interchangeable tips. IF you want to know if it works with HD2 then Yes it certainly does.
This version is slightly big but I use it for a variety of stuff(camera, video cam, laptop etc). According to its site, it has up to 60hrs of portable power.
So far i have been able to charge the HD2 from 30% to 100% and also watch 1hr 30mins video during the process with additional HEAVY usuage and it only manages to reduce the power pack down one bar(their are 4 indication bars) during the process.
NOTE: You can browse the internet and make calls while its charging
I will suggest u go for the extremely portable version SCE4430/12 which is half the size and weight and VERY POCKETABLE. see video
NOTE: You can browse the internet, make calls and every other thing while its charging
(according to their site...it can provide up to 30hrs of portable power)

Rather low capacity, though; only 2000 mAh according to the specs...
http://www.p4c.philips.com/files/s/sce7640_12/sce7640_12_dfu_eng.pdf
Compact charge batteries well over 3000mAh are very common, eg. this one with 3400mAh for £29.95...
http://www.proporta.com/F02/PPF02P05.php?t_id=4662&t_mode=des

ianjd said:
Rather low capacity, though; only 2000 mAh according to the specs...
http://www.p4c.philips.com/files/s/sce7640_12/sce7640_12_dfu_eng.pdf
Compact charge batteries well over 3000mAh are very common, eg. this one with 3400mAh for £29.95...
http://www.proporta.com/F02/PPF02P05.php?t_id=4662&t_mode=des
Click to expand...
Click to collapse
Let me correct you there as it depends on the version you get. The one i have which is SCE7640/12 has a capacity of 8000mAh.
Power output
Voltage: 5.6 V DC, max. 350 mA, 16-19 V DC, max. 2000 mA
Electricity
Battery capacity: 8000 mA
Battery type: Li-Polymer
Philips did a poor job with their specs sheet.link
By the way, I will suggest checking ebay for good deals as the Retail pricing for some of the models are still a bit outrageous. I was able to get mine for less than £40

adoniteking said:
Let me correct you there as it depends on the version you get. The one i have which is SCE7640/12 has a capacity of 8000mAh.
Power output
Voltage: 5.6 V DC, max. 350 mA, 16-19 V DC, max. 2000 mA
Electricity
Battery capacity: 8000 mA
Battery type: Li-Polymer
Philips did a poor job with their specs sheet.link
By the way, I will suggest checking ebay for good deals as the Retail pricing for some of the models are still a bit outrageous. I was able to get mine for less than £40
Click to expand...
Click to collapse
Tbh the size is irrelevant if it stores 8000ma sounds perfect for a prolonged cycle tour.
Weight might be more of an issue, but I'll keep an eye open for a cheap one on ebay that seems to actually be what they claim..
Found one with the following description for 49 gbp MMM
Always ready to go
Extension cord provides extra cable length for convenience.
Handy zip pouch stores headphones and cable neatly.
Enjoy quality sound
Angled Acoustic Pipe channels directional and precise sound
Exceptional noise isolation for quality sound at low volume
Precisely tuned speakers reproduce a wide frequency range
Turbo bass air vents for deepest and richest bass
Use them for longer
Super soft rubber caps for sensational comfort
Cushy silicon rubber ear caps for long-lasting comfort
Ergonomics in-ear design for the best comfort and snug fit
Click to expand...
Click to collapse
lol I think they broke their copy paste function

I would advice to have a look at this portable product:
https://powertraveller.com/iwantsome/primatepower/powergorilla/
I have one. Can charge multiple times with it.

Hello:
You might want to also look at this one.... I've been using one for almost 5 years now and works great.
http://www.socketmobile.com/products/handheld-computer/accessories/portable-power/
• Powerful lithium-ion battery pack with
7,200 mAh rated capacity
- Output (Discharging Voltage):
+5 Volts at 1.8 Amps
- Input (Charging Voltage):
+5 Volts at 3 Amps
Take Care

this is the one I am currently using :
http://www.2the-maxpower.com/en/product/details/pb30x.php
3000mAh...

I use this one:
http://www.amazon.com/Sanyo-eneloop-Booster-Powered-Devices/dp/B001LWZ4BG
5000mAh with 2 USB ports. Works great.
If you are stateside you can pick it up quite cheaply in Costco.
The Philips one is also handy as a backup

fards said:
Weight might be more of an issue, but I'll keep an eye open for a cheap one on ebay that seems to actually be what they claim..
Click to expand...
Click to collapse
Yeah just keep your eyes out as you will probably grab a good deal like i did.
dont worry too much about the weight as it is not heavy at all. Infact I feel its just about 50% heavier that the HTC HD2 which isnt too shabby at all.
fards said:
Found one with the following description for 49 gbp MMM
lol I think they broke their copy paste function
Click to expand...
Click to collapse
lol! that description sets off alarms in my head "warning! warning! scammer alert...please step/look away from the webpage"

Proporta 3400mAh TurboCharger
Listed on UK Ebay for GBP 25.00 + Worldwide shippping
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Found another cheapy one on eBay. It's well worth looking on there for these things!
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=400088658922
It's sold, but indicative of what they sell on there. It takes 4 AAA batteries (rechargable are fine), and it costs just £6. With 4 AAA batteries, you should get quite a good charge from it.

johncmolyneux said:
Found another cheapy one on eBay. It's well worth looking on there for these things!
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=400088658922
It's sold, but indicative of what they sell on there. It takes 4 AAA batteries (rechargable are fine), and it costs just £6. With 4 AAA batteries, you should get quite a good charge from it.
Click to expand...
Click to collapse
I used to have one of those.. or pretty much the same thing. Main issue is that these cheap ones tend to fail when you least want them too..
such as 120 miles into a 150mile leg of a multiday cycle tour, with the need for juice to find my way to my accomodation for the night.

Well, I got a rather expensive Kensington one and it failed after a month or so... It just doesn't charge any more.

The Philips Power2Go is on iBood today. A duo pack for € 19,95. In Holland that is.
www.iBood.com

The Philips has only 350mAh output.. while the default wall charger has 1000mAh output.
Sow I think the ibood version of the Philips is not really capable to charge the HD2 properly or it will take at least 3x as long..

Portable power packs (on the go chargers) solar+USB

I often spend time away from mains power or places where i will be able to safely leave a phone ( or other gadget) plugged into the mains on charge un attended.
At the moment i hav been using a power monkey explore solar charger to keep my gadgets alive, this can charge via the its solar panel, or via the mains, and then charge my gadgets up overnight ( usually ) in my tent, so my phone is/was ready to go with a full charge in the morning, and the power monkey could then go in the sun, or sit connected, and un attended on a mains supply during the day.
Ice just done an expreiment with the power monkey explore to see how it copes with the increased demands of the Motorola Defy, and i dont think it will be able to cope as the charger has virtually exhausted itself getting my Defy from 20% to 60%, and its slightly warm to the touch.
The charger battery is rated at 2200mah, and i have had the device for a few years, so that rating may be a little lower in reality.
So has anyone got any recommendations for a portable charger/solar charger that could charge the defy from 20% up to 100% for three days or more?

A 2,200mAh should do the trick on the Defy's 1,500mAh battery, otherwise the charger's battery is exhausted and needs replacement. F.e., my 1,000mAh A-solar charger adds (only) 40% max. w w w.a-solar.eu

Take a look at the JBC rugged phones and the chargers they come with. It is a usb charger with a mechanical coil. You need to wind it to charge it up. Something like that will be a long term plan that will stay with actually no replacable parts.
Something like this.
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Veho Pebble: 5000mAh battery. Will charge the Defy at least twice easily. Have one myself and it's great.

Have you thought about the powergorilla or the minigorilla

The power monkey Explore test may have been a little bit short, as the unit was only charged up showing all the bars on the LCD screen, and not the green LED as well.
In the meantime ive picked up a New Trent Extreme IMP1000 with a Li-poly battery rated at 11,000Mah the unit feature a DC input jack, a power button with 3 LEDS to indicate remaining charge, and a single USB power output.
I usually plug my defy into the IMP1000 charger after a day at work, with the battery down to 40/30% let it reach 100% charge( about 1 1/2 to 2 hours) unplug it, use the DEfy in the evening then leave it hooked up overnight to the IMP1000
This will be the 3rd night that i have repeated this process with the IMP1000 and it still has 2 out of 3 LEDs left on its power gauge, phone taking charge as normal.

How about using the powerchimp but with some more powerfull AA batteries like these
http://www.picstop.co.uk/uniross-27...=google&utm_medium=base&utm_campaign=products

I tried a powerchimp, and the batteries inside that got extremly hot ( 2,500mah GP NimH) this is usually caused by a high current drain on the batteries, and it isnt good for the batteries.
As for on the go devices so far, ive got a New trent imp1000 power pack ( which im currently testing ) a power monkey explore, a 4 AA battery USB power pack (two AA batteries in series ) a 4 AA solar charger ( chameleon) that also charges via USB, as well as 5v USB power out
As for other devices that need need power, when im away from the mains, these are: a cannon camera ( with li-ion power pack ), MP3 player, Motorola Defy
As for the New trent IMP1000 charge pack its now on Day 4, its charged my DEfy from 20% 3.681v up to 100% 4.164v in 2 hours and 20 minutes, (measured using the battery status app ) Later this evening, just before i go to bed i will hook it up again for an overnight charge, the Trent IMP1000 power pack is still showing 2 out of 3 LEDs on its power gauge.

Nokia has released a bike charger. You only have to reach about 10mph in order to reach wall socket charger efficiency (1000mA).
I believe they're about to release a micro-USB version of it. However there's an android dude already converting the existing nokia charger:
http://toddlerontour.com/universal-usb-bicycle-charger-nokia-dc-14-conversion/
//Dave

I use a MiniGorilla. Has inbuilt 10000mAh battery and lasts almost 2 weeks on charging my phone regularly without requiring a charge up itself.
Regular charging = ~every 2 days
It also turns itself off once the phone is fully charged to save its own battery.

I have one of these cheap "no-name" emergency chargers than runs on 1AA battery. However I'm pleasantly surprised: it runs up to (or rather down to) 0.7-0.8V, it has reasonable efficiency (and consequently it doesn't heat up too much), might be a good option if you have to maintain some bunch of AAs already (if you have a camera with 4AAs you already need to have 8 if you want spares).
I also have 2 small solar panels but they're more of a gimmick. Sure, even the small old one will run a small radio directly but we're talking 10-20mA. The radio will otherwise run off 2AAs for countless weeks (especially if you turn it on only when listening to it), it wouldn't even make sense to run it on rechargeables.
I run the numbers based on specs on solar chargers that catch my eye occasionally and it seems that you need to charge for quite a few days from the solar panel to pay for its own size and weight; that is in ideal conditions - in reality it will be more like over 1 week, possibly more (or rather never unless we're talking some serious expedition without access to power for multiple weeks, is there even such thing nowadays?).
However this MiniGorilla looks really great. Not cheap but it will even charge notebooks (or most likely netbooks). I already marked it as a potential gift, it belongs to the category "I would never buy one but if I have it I would use it regularly" (as opposed to the category "expensive crap that ends up in the attic if I don't re-gift or ebay it quickly").

d210 said:
I have one of these cheap "no-name" emergency chargers than runs on 1AA battery. However I'm pleasantly surprised: it runs up to (or rather down to) 0.7-0.8V, it has reasonable efficiency (and consequently it doesn't heat up too much), might be a good option if you have to maintain some bunch of AAs already (if you have a camera with 4AAs you already need to have 8 if you want spares).
Click to expand...
Click to collapse
thanks for the tip you've reminded me, that i have unused branded (philips) emergency chargers - with mini usb output and recently purchased mini to micro usb cable and a bunch of old aa's
looks like it's working

2Pints said:
I tried a powerchimp, and the batteries inside that got extremly hot ( 2,500mah GP NimH) this is usually caused by a high current drain on the batteries, and it isnt good for the batteries.
Click to expand...
Click to collapse
Given the low cost of good quality NiMh batteries these days i don't see the problem, if you lower the life span to only 100 charges (which is highly unlikely) its still only pennys. I use a 1 hour charger for my NiMh batteries and the batteries are too hot to handle when they come off charge and i have to say i have not noticed a shorter lifespan.

NC solar charger setup

One of the main reasons I got a NC was for being able to have on hand lots of useful books for TEOTWAWKI or SHTF and also was concerned about recharging it after services are interrupted or go down for long periods of time.
Here is the basic setup that will also be used to charge AA/AAA and 123 batteries:
Sunlinq 12W folding Solar Panel
http://www.globalsolar.com/en/products/portable-solar-chargers/commercial/12-watt.html
This actually puts out 15 volts and close to 1 amp and has a car cigarette lighter type outlet adapter.
Champtek USB Car Charger Kit
http://champtekinc.com/champtek/CC-210.html
This is rated at 5v 2.1 amps output.
I have only tested this once and it appears that there is enough current being generated to have the N on the plug glow orange and the NC indicate it is being charged. Going to have to do a test to compare charging time compared to regular house current.
I think I will eventually add a 4000 mah external battery since that can be used for more than just backup power for the NC.

Looking forward to seeing the results! How large/heavy is that solar panel?

The specs on the sunlinq 12W are:
folded: 9" x 5" x .7"
open: 29" x 17.5" x .03"
weight: .7 lb
I bought it about 3 years ago for around $150. There is a 25W version, but it is much bigger and cost around $350.
One of the backpacking magazine writers tested out a unit during a trip to Alaska and it suffered no ill effects of freezing, thawing, and rain while strapped to top of a tent.

I was also thinking about solar powering
but in the more cheap side of things
I'm actually installing this in a car ( rear deck probably )
so I don't care about weight and even size much
What do you think about this ?
http://www.adafruit.com/blog/2010/0...boost-a-solar-power-charger-for-your-gadgets/
Could this work? Maybe 2 panels connected in parallel?
I live in Israel and we get 10+ good sun hours a day here

Cool stuff. I also use my nook while backpacking/geo-caching. I live in michigan though, and even when we have sun, it's not that much for a solar charger. I'm looking into getting one of the fuel cell chargers, like the SiGNa's mobile-H2. here's a write up about it, http://arstechnica.com/science/news/2011/03/just-add-water-to-recharge-batteries.ars .
They said they're going to launch with a 5watt/hr one first. which is not really enough for the nook color. I'm hopeful though. With the success of the ipad(lol I know dirty word around these parts) and android tabs. I would expect a larger, more like 15 or 20watt/hr, device to be released. Best part is, any water will work even the yellow kind.
Hydrogen fuel cell tech is the real future of energy. We just need to find the right catalyst. (also china needs to stop hoarding rare earth metals) A 10% hydrogen recovery rate and non reusable catalysts, just won't cut it.
Sent from my Nook Color using Tapatalk pro

Dj-Gutz said:
I was also thinking about solar powering
but in the more cheap side of things
I'm actually installing this in a car ( rear deck probably )
so I don't care about weight and even size much
What do you think about this ?
http://www.adafruit.com/blog/2010/0...boost-a-solar-power-charger-for-your-gadgets/
Could this work? Maybe 2 panels connected in parallel?
I live in Israel and we get 10+ good sun hours a day here
Click to expand...
Click to collapse
I am not an electrical engineer and only took a basic electronics class way back in high school (I have forgot most of it) so some of the things I say may not be completely accurate.
The thing with solar panels is that you have to match the panel output to the device you want to charge. There are lots of nice looking small solar chargers on the market, but if you read the small print the charge times can become ridiculously long.
I have seen small cheap china made solar battery chargers that state 3v at 200ma (if this is even accurate). This would be fine for directly running a small portable radio, but for charging 2 AA batteries it would take a very long time. The new generation of low self-discharge nickel-metal hydride AA batteries have capacities of up to 2500 mah. Using this cheap charger would take over 12 hours for just 2 these batteries.
I am estimating that the sunlinq (rated output 800ma, but I have measured close to 1a) should charge a NC (4000 mah battery) in about 5 hours.
The device in the article you mentioned I think could only be used to trickle charge a NC but only to about 25% capacity.
It would be great if someone with more electronics knowledge could add his opinions here.

Cheap solar power for my phone
So actually I figured out how to charge my vibrant with solar power on the cheap. I think solar cells with integrated batteries are a waste since the device being charged already has a battery, so why waste money/current?
The solar panel cost $25. I thought the specs were too good to be true, but solar panels are better than they used to be. The panel turned out to be exactly as advertised.
Assuming the Nook can charge with 400-700mA of current, this should work for the nook too: http://taras-log.blogspot.com/2011/05/cheap-solar-power-for-my-phone.html
These panels are about the size of a small tablet, apparently one can also cut them down to size. I hack that I want to see is where someone replaces the tablet backcover with a solar panel. Imagine a nook that never has to charge while outside . I would love to have my Nook Simple Touch modified this way, but I'm afraid that's beyond my machining abilities

Imbroglio said:
I am not an electrical engineer and only took a basic electronics class way back in high school (I have forgot most of it) so some of the things I say may not be completely accurate.
The thing with solar panels is that you have to match the panel output to the device you want to charge. There are lots of nice looking small solar chargers on the market, but if you read the small print the charge times can become ridiculously long.
I have seen small cheap china made solar battery chargers that state 3v at 200ma (if this is even accurate). This would be fine for directly running a small portable radio, but for charging 2 AA batteries it would take a very long time. The new generation of low self-discharge nickel-metal hydride AA batteries have capacities of up to 2500 mah. Using this cheap charger would take over 12 hours for just 2 these batteries.
I am estimating that the sunlinq (rated output 800ma, but I have measured close to 1a) should charge a NC (4000 mah battery) in about 5 hours.
The device in the article you mentioned I think could only be used to trickle charge a NC but only to about 25% capacity.
It would be great if someone with more electronics knowledge could add his opinions here.
Click to expand...
Click to collapse
My nook will be in deep sleep as long as the car not running ( I drive about 0.5-1 hour a day , maybe more on weekends but it shouldn't matter much )
And when the car is running it will be charging via 2A charger
What I'm hoping is to eliminate the need for the charger when I can ( it will be left plugged in for shady days etc of course )
So it doesn't have to charge it @ full current , 5 hours is probably perfect...
But it's pricey for me..
toolong said:
So actually I figured out how to charge my vibrant with solar power on the cheap. I think solar cells with integrated batteries are a waste since the device being charged already has a battery, so why waste money/current?
The solar panel cost $25. I thought the specs were too good to be true, but solar panels are better than they used to be. The panel turned out to be exactly as advertised.
Assuming the Nook can charge with 400-700mA of current, this should work for the nook too: http://taras-log.blogspot.com/2011/0...-my-phone.html
These panels are about the size of a small tablet, apparently one can also cut them down to size. I hack that I want to see is where someone replaces the tablet backcover with a solar panel. Imagine a nook that never has to charge while outside . I would love to have my Nook Simple Touch modified this way, but I'm afraid that's beyond my machining abilities
Click to expand...
Click to collapse
I actually looked at that solar panel before , good to know that it's as described , Ill defiantly consider it so thanks
What happens when the battery is full and it's connected? Does it drain it?
Looks like the setup in the link I posted earlier got some kind of circuit to keep it from draining the battery - Or does it only happen because of the charger battery? ( seems so electricity wise but I don't have any experience with solar panels and I don't know if they can draw power as well )
Also , can I hook 2 of these in parallel to achieve more current?
Thanks ( Sorry for "taking over" this thread Imbroglio , Let me know if you want me to open a separate thread for my setup )
Edit :
I just saw the "update" on the link you posted , Looks like it's draining the battery in the shade
I'll be following his thread to see if there is any progress on this issue
Quick link : http://forum.xda-developers.com/showthread.php?p=15413618#post15413618
If it doesn't resolve using software maybe we can just see how to incorporate the circuit from the setup I posted with this panel ( My guess it shouldn't be hard )

I'm in the process of making a solar panel for my gadgets (not enough for NC yet, but for my G1, camera, etc, it does the trick). You need some diodes to ensure the current doesn't go the other way.
Also, if you want some regulation of voltage and power to the device (in case you are doing it all on your own with panels off ebay, etc), you should get a voltage regulator and toss some resistors in their for the right current.

I found this tool in android modaco forums :
http://android.modaco.com/topic/333406-usb-charging-commander/
github : https://github.com/t0mm13b/USBChargeCommander
On my HD2 CM7 it doesn't work , please check it on the NC CM7 if you can
I don't have my nook yet
If it works it should take care of that issue
If not , maybe we can go through the source and make it work on the nook
*Side Note : on CM7 - the charging animation should still be showing , but spare parts should say on the battery info discharging

So as far as i can tell the diode that the cell comes with is sufficient to prevent drawing current from the phone. Problem is the circuitry in the phone is stupid and doesn't shut off when it sees insufficient current. I suspect that since the phone thinks it's charging, it is turning on extra circuitry which itself consumes power. Thus the power drain.
Solar cell provides a stable 5V whether it's providing 0 or 600mA, so you don't need a voltage regulator... And you can't use a voltage-based regulator to build a circuit to shut off charging when the current gets too low.
I don't see why you wouldn't be able to hook these up in parallel. Should work fine.
I looked at the source code for the Vibrant battery driver. It can certainly turn off charging in software. Just need a slight kernel mod to expose that via /sys. Looks like zte blade already does it. I dont see why the nook can't do the same. I don't know if the Nook can report the current level.

On the xda thread the guy says he can see the current in /sys/devices/platform/jupiter-battery/power_supply/battery/batt_chg_current
On my hd2 this is the path for example /sys/devices/platform/htc_battery/power_supply/battery/batt_current
so just look for similar path names
can you check this on your nook?
you can use root explorer , just long click on the file and open in text editor
Edit :
I actually noticed I'm not getting the charging current on the HD2 , but the current the device uses in general which I don't think can determine whether it should stop the charging based on that value alone
any thoughts?

I finally got a chance to test everything out.
The first test was yesterday with the NC at 72%. Time was 6 pm pst. No overcast sun was at about 40-45 degrees on the horizon. Charging indicator was on and I let it sit for 20 minutes and when I brought the NC out of sleep mode, it was responding erratically. Battery Spy would lock up completely. Everything was fine after reboot, but no increase in battery %. The same thing happened after allowing another 10 minutes of charge time. My multi-meter is not working so I could not get a reading of how much the solar panel was putting out. My guess is that the problem was due panel being used too late in the day and the car adapter wanting to put out 2.1 amps made for an unhappy NC.
Today I tried out the setup at 1:00 pm pst. No overcast sun directly overhead. Charging indicator was on and Battery Spy or the NC did not exhibit the same problems as yesterday. Unfortunately, I didn't have enough time to let it sit and charge and was just testing the NC while it was plugged in. It appears that the car charger/NC combination has to be used during the sun's peak hours, probably from 11-4 pm.
More testing is needed. If the problems persist, I may have to change to a 1 amp car charger or resort to charging an external battery.

Why not use a solar charger with an integrated battery?

Got some free time...
So, I finally got some time today to wire mine up all proper-like. A few things to note (so I do not get 1000's of "you're an idiot/should have done it this way/etc").
I did not want to carry any more extra stuff, so external battery (maybe later)
This will mostly be used for my cell phone/camera/etc, so 5V/.5A was the goal for output
I'm going to try and find a cheap case today to put it all in
This will not charge an NC while on. Only off, and at a very slow rate. See second comment.
To make work well with the NC, just add more in parallel/get a larger panel.
Anywho, I bought 2x solar panels from ebay (each at 300 mA, 6V). Tossed them into parallel (for 6V, 600 mA), then dug out some resistors and got a few LM317T voltage regulators. Since most devices have (or hopefully have) a circuit that cuts off at a certain voltage, I needed to control the output voltage to ensure I would have a charging device regardless of brightness (The panels ended up putting over 7V out).
The LM tends to have a volt or so drop through it, so I targeted 6V out (using this).
Soldered some stuff, wired it together, testing it without load with a multimeter, and finally plugged in the NC (after testing it with my G1).
I know you can't see **** with the pictures (the N glowing orange or the charging lightning bolt, but it was there).
Woohoo!
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ace7196 said:
So, I finally got some time today to wire mine up all proper-like. A few things to note (so I do not get 1000's of "you're an idiot/should have done it this way/etc").
Click to expand...
Click to collapse
Very cool setup. It looks like those panels are about the right size to attach to a rigid backing and onto the side of a notebook case.
I came across a video on youtube where a guy is reviewing an solar charger with battery setup called PowerMonkey eXplorer.
https://powertraveller.com/iwantsome/primatepower/powermonkey-explorer/
Much of the company's product line is meant to be used outdoors and exposed to the elements. The eXplorer has a 2200mah battery and the solar panel outputs 200ma so you are looking at around 11 hours in direct sunlight. Given that the NC has a 4000mah battery it would only give about a 50% charge.
The PowerMonkey eXtreme looks alot more suitable for the NC.
https://powertraveller.com/iwantsome/primatepower/powermonkeyextreme/
9000mah battery and 2.1 amp output! The drawback is that it appears the solar panel is just a bit more larger than with the eXplorer unit. If it puts our say 400ma it is still going to take around 24 hours of direct sunlight to get a full recharge.
I am still going to stick with what I have right now though and maybe look into getting an external battery to charge instead of trying to run the solar panel directly to the NC.

[Q] Standalone BAttery FAST CHARGER?

Well, I have about 3 batteries for my Optimus 2X, and I'm managing of buying another extended one (3500mAh).
I have an external standalone battery charger which is the usual crap you'll find on eBay...there's no choice , they are all the same model
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Now, the problem is that this charger, has a ridiculus current of 350 mAh +-50mAh
which is waaaaaay not enough to charge the battery in a decent time.
I mean the standard 1500mAh battery charges in something like 7-8 hours.
So the new extended one will take a full day to charge, at least this will not surprise me, considering the time it takes to charge the standard one.
So I'm searching for a wall charger that can charge batteries standalone... and that has a decent current I mean 800mAh or above.
It could be also integrated into a dock/cradle for the phone.....like the KiDiGi one (that should have a 800mAh current for the battery and 1000mAh for the phone), but it should have enough place to put an extended battery on it, which the KiDiGi one has NOT.
Hoping the community has some rabbits in the hat for me.
Thanks

http://cgi.benl.ebay.be/AC-Battery-...537522?pt=PDA_Accessories&hash=item2c5ec51db2
it says
100% brand new,High quality
External desktop battery charger,more convenience to charge your standby batteries.
Battery charger with USB:Charging stop once battery is full,Nerver overcharge keeps the performance and life of
the battery more convenience to interchange your standby batteries
Input AC:110-240V 50-60Hz 0.2A
Output:5V 800mA
Plug type:US standard

thank you for your reply but it is the same charger i already have.
That specs are the specs for the USB output.
If you look into the photo of your link, you'll see that the battery itself is charged at the usual 350mAh....
the specs are the same of my charger....sadly

I should say thx to you, it was thinking of buying 1 to charge my extended 3500mah battery I just purchased from ebay
I just got my 3500mah delivered is charging right now in my phone
looking for a charging dock to

let me know how long did it take and if it was with phone off or on, and via wall charger o USB.
I ordered mine 3 days ago...

The battery was already charged to 95%, let it charge for 2 hours to be sure it is full, deleted battery stats now it's 5 hours ago and still 86% wifi as being on all the time, mail sync every 30minuts, and lots of Tapatalk, 30minuts of gaming,
Wen battery is empty I will full charge and let you now how long it takes
Sent from my Optimus 2X using Tapatalk

i put my phone on the charger with total empty battery (3500mah) on 11PM
at 7AM wen I waked up , the phone was full charged , so full charging overnight is posibble with the original charger
don't now how long it take in total , could not see because phone was total dead wen i put it tot charge , turned phone on in the morning and battery was total full

Thank you. So it took 9 hours with phone shutted off.

Less than 9hours I was asleep so don't know exact time
Sent from my Optimus 2X using Tapatalk

Charged @1%left after 2hour 30min battery was full charged (3500mah batt) with stock lg charger
Sent from my Optimus 2X using Tapatalk

Thank you for your reports, phone was switched off, in this last case?

TheBo said:
Thank you for your reports, phone was switched off, in this last case?
Click to expand...
Click to collapse
no turned on

http://www.focalprice.com/MC312B/SEA_LG_Optrmus_2XP990_Portable_Cradle_Charger_Black.html
Quite expensive, but it outputs 1A
Good thing is that the adaptor is separate so you can use your own adaptor, maybe a 2A one.
But it looks shady cause the picture on the box doesn't look like Optimus 2X
http://www.dealextreme.com/p/dual-u...th-extra-battery-slot-for-lg-optimus-2x-73031 <-- if you're more comfortable with dealextreme
I went through the thought of getting a extra battery as well but the price and the extra stuff is just isn't worth it.
When i stop using the optimus 2x or if it dies i will have a almost useless cradle with useless batteries.
I went down the path of getting backup battery instead since i can use it on other devices. (the universal type)
http://www.dealextreme.com/p/univer...wer-port-green-white-flat-plug-110-240v-55661
EDIT: you can also get something like this but the output isn't great but you can use it for old phone battery and any battery which is 3.7V
There are a lot more like this, you can take your time to find the perfect one.

Kag said:
http://www.focalprice.com/MC312B/SEA_LG_Optrmus_2XP990_Portable_Cradle_Charger_Black.html
Quite expensive, but it outputs 1A
Good thing is that the adaptor is separate so you can use your own adaptor, maybe a 2A one.
But it looks shady cause the picture on the box doesn't look like Optimus 2X
http://www.dealextreme.com/p/dual-u...th-extra-battery-slot-for-lg-optimus-2x-73031 <-- if you're more comfortable with dealextreme
I went through the thought of getting a extra battery as well but the price and the extra stuff is just isn't worth it.
When i stop using the optimus 2x or if it dies i will have a almost useless cradle with useless batteries.
I went down the path of getting backup battery instead since i can use it on other devices. (the universal type)
http://www.dealextreme.com/p/univer...wer-port-green-white-flat-plug-110-240v-55661
EDIT: you can also get something like this but the output isn't great but you can use it for old phone battery and any battery which is 3.7V
There are a lot more like this, you can take your time to find the perfect one.
Click to expand...
Click to collapse
Thank you for your time!
Sadly none of them specifies the output current for the battery 4.2V @ xxx A
They only say that the usb port is feeded with the 5V USB spec voltage and the current of 1 A...this is the current that the phone receives and not the standalone battery. It's pretty easy to find simple wall charger to plug directly into the phone that will output 1A of current @ 5V.
The last one you linked seems to do, althought not explicited, 500mAh both on the USB 5V and on the 4.2V of the battery pins
Thank you in any case.

TheBo said:
Thank you for your time!
Sadly none of them specifies the output current for the battery 4.2V @ xxx A
They only say that the usb port is feeded with the 5V USB spec voltage and the current of 1 A...this is the current that the phone receives and not the standalone battery. It's pretty easy to find simple wall charger to plug directly into the phone that will output 1A of current @ 5V.
The last one you linked seems to do, althought not explicited, 500mAh both on the USB 5V and on the 4.2V of the battery pins
Thank you in any case.
Click to expand...
Click to collapse
Most of such device don't regulate the current, usually just the voltage.
As long as the AC to DC adaptor can provide everything will go through (meaning the output current of the adaptor will be the rating going to the battery/phone or whatever)
And how much of it is used up depends on the device drawing power.
Note: you do have to beware of some made in china adaptors as the rated specs sometimes do not match up to the actual.

remaining on topic I think this could be useful 0.8A http://www.dealextreme.com/p/0-8-lc...-car-power-adapters-for-digital-cameras-41216
Regarding the 3500mAh extended battery this is the measured capacity after ONE cicle of charging/discharging from Battery Monitor Widget
I think this could be useful in the future, I will update it if the capacity increases meanwhile I charge/discharge it...at least for the few first times this could be possible.

Battery
I think the stock one is good to have ! No need to change !

My eBay charger works fine, charge time is long yes but it charges about as long as my battery lasts did I'm never running out.
Sent from my LG-P990 using Tapatalk

pordokoftis said:
I think the stock one is good to have ! No need to change !
Click to expand...
Click to collapse
yes but it is useless regarding the focus of this topic.
We are discussing about standalone spare batteries chargers.

I think it is better to charge your 3500mah (or 2500mah?) battery using a 2amp usb adapter. Charging a lithium battery at anything 1c and below is very safe. So if you're charging 3500mah (3.5amp) battery on a 1amp charger, it's only like 0.3c which is way less. Atleast if you use a 2amp charger, you can charge your big battery around 2hrs tops. But there is no desktop charger with 2amp output though, just usb adapters, mainly for ipads.

Extended battery

Who has one

Dont really need one imo but ill be checking out the zero lemon 9300 mah battery once its available sometime in april for $40.
http://forum.xda-developers.com/showthread.php?t=2175695
Sent from my SPH-L900 using xda premium

I picked up a 7960mah battery today it was only 50 % so I won't know how long it lasts until tomorrow will give it a full charge overnight it is big but the back case is better looking then the one I had on the original note, I actually did pretty good today for $60 I got this extended battery an otter box commuter case a samsung flip case and a samsung desktop dock not bad

golfinggino said:
I picked up a 7960mah battery today it was only 50 % so I won't know how long it lasts until tomorrow will give it a full charge overnight it is big but the back case is better looking then the one I had on the original note, I actually did pretty good today for $60 I got this extended battery an otter box commuter case a samsung flip case and a samsung desktop dock not bad
Click to expand...
Click to collapse
What?!? Links, please!!!

These were all off kijiji there are no links tomorrow I am getting a back case modified for wireless charging and the charging dock so enough accessories for this weekend

golfinggino said:
These were all off kijiji there are no links tomorrow I am getting a back case modified for wireless charging and the charging dock so enough accessories for this weekend
Click to expand...
Click to collapse
what's is kijiji? sorry, if its something you don't want to mention in the forum, you can PM me. I'm curious about that 8000 mAh battery. What size, double in height of original one? What brand? Can you confirm it's true capacity by peeling the label off? Pictures? Physically it can't be more than 6400 mAh if its double of OEM height, or more than 3200 mAh if its original OEM size. Really curious about the battery.

it is probably just a chinese copy - just google it - i did a quick search and found someone who got 11 hours screen on time with one of the same size so i thought i would give it a shot, paid $20 for it - might not even be worth that but who knows always can use it as an emergency back up battery - but i will do a test tomorrow from 100% and report back the screen on time

There seem to be a dozen or so out there. I would love to see reviews of any of the batteries listed below. I know from the work I did in this thread....
http://forum.xda-developers.com/showthread.php?t=1753726
...that Chinese batteries are very hit or miss, and there is often absolutely no correlation between the claimed capacity, and the true capacity.
The blunt reality, is that an extended capacity battery could have less capacity than the OEM cell. There were lots of cells tested in the thread above, that had under half the capacity of an OEM. It would be a shame to bulk up our phones with a double-thick battery, only to have less capacity than the OEM cell. So, any reviews out there?
(I'm not against doing another true-capacity battery shootout, this time for extended capacity Note II packs)
http://www.amazon.com/Anker-Extende...86811&sr=1-6&keywords=note+2+extended+battery
http://www.amazon.com/warranty-Exte...86811&sr=1-2&keywords=note+2+extended+battery
http://www.amazon.com/Hyperion-Exte...86811&sr=1-1&keywords=note+2+extended+battery
http://www.ebay.com/itm/EZOPower-Ex...166595?pt=PDA_Accessories&hash=item416ec34a83
http://www.ebay.com/itm/7500mAh-Ext...352576?pt=PDA_Accessories&hash=item43b6c7be80
http://www.ebay.com/itm/NEW-6500mAh...540684?pt=PDA_Accessories&hash=item4abe8dc00c
http://www.ebay.com/itm/7600mAh-Ext...016840?pt=PDA_Accessories&hash=item51a4f73ac8
http://www.ebay.com/itm/New-6500mah...541010?pt=PDA_Accessories&hash=item27d0b97a92

you are right it might be even less the the oem battery, i will run it from 100% tomorrow and post my results and some pics of the battery if anyone is interested, btw i am currently running the latest liquid smooth rom and soapkernel with pegasusq governor up to 1.92 ghz, i normally get around 5 to 6 hours screen on time under normal use, sleep is set to 1 minute, nfc is off, location services is on even though i dont really use it, brightness is on auto to the lowest setting - which is fine for me most of the time, i would say if it doesnt get 9 hours screen on time then it is not really worth it other then a spare back up battery for emergencys as it is quite bulky

rhd-android said:
There seem to be a dozen or so out there. I would love to see reviews of any of the batteries listed below. I know from the work I did in this thread....
http://forum.xda-developers.com/showthread.php?t=1753726
...that Chinese batteries are very hit or miss, and there is often absolutely no correlation between the claimed capacity, and the true capacity.
The blunt reality, is that an extended capacity battery could have less capacity than the OEM cell. There were lots of cells tested in the thread above, that had under half the capacity of an OEM. It would be a shame to bulk up our phones with a double-thick battery, only to have less capacity than the OEM cell. So, any reviews out there?
(I'm not against doing another true-capacity battery shootout, this time for extended capacity Note II packs)
Click to expand...
Click to collapse
My hat goes off to you!!!! Being a technical/detailed person myself, I absolutely enjoyed that write-up you have done for HTC Sensation. If you can do something like this for Note 2, that would be AWESOME!!!! As a matter of fact, I will let you borrow my Innocell (Seidio) 4500 mAh battery and another 4200 mAh "Gold" which I supposed to get in a few weeks. I don't have any hardware setup to make exact measurements, was just doing relative comparison when I was testing Innocell (check out link in my signature to all my accessory reviews).
Btw, do you mind posting a short write up with a few pictures of your setup to measure batteries? Maybe link to where I can get the equipment as well? I would really appreciate that!

vectron said:
My hat goes off to you!!!! Being a technical/detailed person myself, I absolutely enjoyed that write-up you have done for HTC Sensation. If you can do something like this for Note 2, that would be AWESOME!!!! As a matter of fact, I will let you borrow my Innocell (Seidio) 4500 mAh battery and another 4200 mAh "Gold" which I supposed to get in a few weeks. I don't have any hardware setup to make exact measurements, was just doing relative comparison when I was testing Innocell (check out link in my signature to all my accessory reviews).
Btw, do you mind posting a short write up with a few pictures of your setup to measure batteries? Maybe link to where I can get the equipment as well? I would really appreciate that!
Click to expand...
Click to collapse
That's a very kind offer!
I'm in Canada though, and one of the realities is that shipping to and from (mostly from) Canada, gets pretty pricey. I thought about doing this with batteries before (so that people could send me their cells for testing), but when I did the math, I realized that for less than the price of two-way shipping, I could just buy a new cell. It's unbelievable, but I can buy a cell from China, shipped to Canada, for a total price (including shipping) that is less than just the postage would cost me to re-mail the same cell to my next-door neighbor.
Maybe for the time being, we could at least collect a few recommendations. I've got a couple cells en-route already. I don't have a ton of cash to outlay on cells for a massive battery shoot-out, but I could certainly buy a couple. Any recommendations?
My setup -
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I use a VA Meter that came from a Chinese gadget site. Out of the box, it is wired to pull its own power from the battery you're testing. The unit can be modified (and I have done so) to take an external 5V supply instead, the benefit being that once the cell dies, the measurement unit itself doesn't loose power. I've run discharges of several cells through this meter, and into a proper hobby charger (set to discharge) in order to verify that the inexpensive VA Meter (it was under $15) is actually accurate. It is. The measurements were within 1% of the proper hobby charger. The reason I don't use the proper hobby charger for measuring smartphone batteries, is that smartphone batteries discharge down to 2.5V before their protection kicks in. Hobby chargers (or at least mine) dislike that practice, and end the discharge cycle at 3V. The setup above, allows me to test all the way down to 2.5V before the battery's protection kicks in.
The funky looking thing with a fan is the test load. It's very much "overkill" for this type of testing, but I use the same setup to test up to 16V @ 2A packs, and that creates heat that needs to be dissipated actively. The circuit you see on the test load is a boost/buck circuit that does nothing other than supply the constant 12V to the fan, regardless of what voltage input it receives. Inside the test load, there are two 50W axial mount resistors, of different resistances, that I can selectively choose to discharge into, depending on what I'm testing.
Finally, those little clip leads are essential for connecting to the actual cells. For the Sensation testing, I actually made a little proprietary clip from a piece of PCB and solder blobs, that I would rubber-band onto the cells. These clips work much much better.

so i have tested the 7960mah battery that i picked up yesterday - i would say it is at least double of the oem battery, i have been using the phone alot today - downloading roms and torrents, xda, etc. so the screen has been on most of the day - you could run the whole day with the screen on the entire time if you really wanted to do and still make it through the day without having to charge it, i am just about to plug the phone into my computer as i need to get some files of it and also want to test out the wireless charging unit that i picked up today and flash a new rom - but here are the stats from today
the phone has been running on battery for 10 hours
screen on time 8 hours
battery remaining is 41%
i would not use this on a regular basis as it is a lot bigger but if you really needed the extra time then it will certainly deliver - the only time i would ever need this much battery is on the weekends when i am downloading alot, etc, so the screen is on almost the entire time
hope this helps anyone that is thinking of getting one decide

Since I'm waiting for 4200 mAh battery, presumably advertised as "oem replacement", I searched a couple more on-line places that sell the same "Gold" battery. Actually found 2 other on-line HK retailers that sell it with an actual disclaimer that its "4200 mAh battery, but you will not get more than 3100 mAh out of it" lol!!! What is funny, even with that disclaimer, they sell 3100 mAh replacement for about $4 while 4200 mAh replacement is $8 and a disclaimer of the same performance as 3100....
@golfinggino: is there a way to peel the label off your 7960 mAh battery? I have a feeling its probably a double capacity "stacked" 6200 mAh battery. Still great to have extra capacity when you need it, although with these double capacity batteries you don't get a good case. Per my review of Seidio's Innocell (link in the signature), they actually came up with a special version of ACTIVE case for their battery, but it's only 4500 mAh rated (although I found it to be of a higher capacity) and I don't understand why wouldn't they make it as a true double capacity.
Also, a general question to everybody, why wouldn't anybody talk about external battery banks?!? Wouldn't that be so much more easier to have a small charged up pack to hook up your phone too for a quick recharge? There are some that deliver true 2A output with capacities of 6 Ah up to 13 Ah and more. Anker, Exogear, and Yoobao make some quality slim external battery banks.

i am pretty sure it is probably just a double stacked batttery as i had one on my original note and that is what it had - i will see if i can peel off the label and check without ruining it - problem is i sell most of the android devices i have within a week or 2 and buy something new so i dont want to rip it all up ! this extended battery lasts alot longer then the extended battery i had in the original note that is for sure

rhd-android said:
...I'm in Canada though, and one of the realities is that shipping to and from (mostly from) Canada
Click to expand...
Click to collapse
Understood, makes no sense to ship back'n'forth.
rhd-android said:
I use a VA Meter that came from a Chinese gadget site.
Click to expand...
Click to collapse
I'm not too familiar with battery operation, but can find my way around electronics
So in theory you have a close loop (without taking into account ext power of VA meter and heatsink fan), with Battery, VA meter, and Rload in series? What is a value of Rload required for this measurement?
And then, you watch VA meter and time it until the voltage reading drops to 2.5V? What is the actual formula to calculate A/h? Do you need to monitor both Voltage and Current through VA meter? I have a regular multi-meter, but obviously can't monitor both at the same time without turning knob dial, and its battery operated so it will time out after awhile. Can a use multi-meter which plugs into a power outlet or do I need the actual dual display VA meter? I guess if you can show me the formula used to calculate mAh rate, I can figure out what I need for this setup.

I have one on my samsung galaxy s2 (t989)
Qcell 3650.
I couldn't live without it. Lasts a full day with heacy use + 4g + auto/low brightness. The stock battery barely made it to noon. I don't know how others can stand it.
I bought two Qcells, one for me and one for the gf. Both have performed well and can be found on amazon for $20 or so with a free cover.
Boy that sounds like a plug, but its not. I at one point was hunting for a good extended battery and found reviews online, so hopefully I am returning the favor for someone else down the road.
Sent from my SGH-T989 using xda app-developers app

vectron said:
Understood, makes no sense to ship back'n'forth.
So in theory you have a close loop (without taking into account ext power of VA meter and heatsink fan), with Battery, VA meter, and Rload in series? What is a value of Rload required for this measurement?
And then, you watch VA meter and time it until the voltage reading drops to 2.5V? What is the actual formula to calculate A/h? Do you need to monitor both Voltage and Current through VA meter? I have a regular multi-meter, but obviously can't monitor both at the same time without turning knob dial, and its battery operated so it will time out after awhile. Can a use multi-meter which plugs into a power outlet or do I need the actual dual display VA meter? I guess if you can show me the formula used to calculate mAh rate, I can figure out what I need for this setup.
Click to expand...
Click to collapse
Luckily, it's a lot easier than that!
The VA meter, is actually a "VAmAH" meter I don't know why they just call it a VA meter, because it has an actual function built right in for tracking mAH, no math required. The meter knows the voltage that is being dropped across its output, and the current that is flowing through it so it just tracks the mAH as that all happens.
The fan gets it's power from the circuit's output, just like the resistor does. So it doesn't really matter if the fans running or not. If it is, then the load draws an extra 10mA or so of current, which gets tracked just like all the other current going through the resistor. In practice though, I generally don't bother connecting the fact for small cells like these. The resistor is only burning 3 or 4 watts, and that's fine for air to dissipate.
Someone earlier had a question about battery banks / external packs, and why people don't use them. I do, I have a whole bunch. But they're awkward in that you have to carry cables, and connect cables to your phone. I would echo an earlier poster who commented on the shame of connecting a mobile device to wires. The only time I ever connect my smartphone to cable is (generally) on it's first day in my possession, when I have to get it working with custom ROMs. After that, I generally never hook my phone to a cable again - can't stand the awkwardness of wires.

rhd-android said:
Luckily, it's a lot easier than that!
The VA meter, is actually a "VAmAH" meter I don't know why they just call it a VA meter, because it has an actual function built right in for tracking mAH, no math required. The meter knows the voltage that is being dropped across its output, and the current that is flowing through it so it just tracks the mAH as that all happens.
The fan gets it's power from the circuit's output, just like the resistor does. So it doesn't really matter if the fans running or not. If it is, then the load draws an extra 10mA or so of current, which gets tracked just like all the other current going through the resistor. In practice though, I generally don't bother connecting the fact for small cells like these. The resistor is only burning 3 or 4 watts, and that's fine for air to dissipate.
Someone earlier had a question about battery banks / external packs, and why people don't use them. I do, I have a whole bunch. But they're awkward in that you have to carry cables, and connect cables to your phone. I would echo an earlier poster who commented on the shame of connecting a mobile device to wires. The only time I ever connect my smartphone to cable is (generally) on it's first day in my possession, when I have to get it working with custom ROMs. After that, I generally never hook my phone to a cable again - can't stand the awkwardness of wires.
Click to expand...
Click to collapse
I see. So what is a value of the load resistor, a few ohms probably? Do you by any chance still have a link to that VA meter you got?
With external batteries, I think either Anker Astro 2 (1A/2A, 8400 mAh) or Exogear ExoVolt (2A, 5200 mAh, stackable!!!!!! or Yoobao (1A/1.5A, 13000 mAh) would be my top choices. I would probably think that Anker Astro 2 for $38 is the best solution in this case of price/capacity.
Oh, and I guess you a wireless charging setup then? If so, wouldn't that be only in one place, like home? While you are on a road, at work, in a car - don't you need to use micro-usb cable?

vectron said:
I see. So what is a value of the load resistor, a few ohms probably? Do you by any chance still have a link to that VA meter you got?
With external batteries, I think either Anker Astro 2 (1A/2A, 8400 mAh) or Exogear ExoVolt (2A, 5200 mAh, stackable!!!!!! or Yoobao (1A/1.5A, 13000 mAh) would be my top choices. I would probably think that Anker Astro 2 for $38 is the best solution in this case of price/capacity.
Oh, and I guess you a wireless charging setup then? If so, wouldn't that be only in one place, like home? While you are on a road, at work, in a car - don't you need to use micro-usb cable?
Click to expand...
Click to collapse
I think I have a 10 ohm and a 5 ohm in there, that I can select between, or parallel or series. In practice I try to deplete smartphone cells at as close to 1A as possible when at full voltage (obviously because of ohms law, the rate drops a bit as the voltage falls).

I got 3 batteries 2 extended and one fake double cell from chinaI got off ebay.
One 7600mAh and anker extended 6200mAh.both from amazon
I ran nova battery tester in short for battery quick test.for the last 3 test.
the first test are uirrelevant due to the fact that that I had no bios for my phone model in nova at the time. That fourth one upis right when I got the anker and found the bios for my phone.then I ran the short test on the
Anker, 76, china at the end. Also I aged my extended 76 and it puts out 10hours continous on screen time.
My 76 I charge in the low run 350 +/-50mA china solo battery charger. 18 hours out put and at lleast about a days use or more . I charge one extended while im using the other but still I want more power I was wonder if any has made their own extended battery mod. Im thinking about adding the two extended battery on the back and putting them in series the make a suposive brickscreen device. With power for a week. Im looking fir easy make series some how .. but I digest.
Heres nova.