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10000mAh external battery

Did anyone ever see this?
www.amazon.com/New-Trent-Extreme-Pack-IMP1000-Blackberry/dp/B003ZBZ64Q
10000mAh? Powerful!

Haven't seen that one but I do have the Proporta USB Turbocharger 3400. It works great and supplies about a days worth of power - highly recommended.

Hmm...
'Ultra reliable Lithium-Ion battery, 600% iPhone 4 Battery life, 100% 3G iPad battery life'
so the iPad has a battery of 11000mA????? Don't think so.

I think these kinds of things are great if you're camping or traveling. The 3 reviews on Amazon would make me cautious until it's had more feedback.
One tends to learn as much from negative feedback as from positive feedback (especially since there are companies that get paid to give positive feedback).
Edit: Just found this at half the price:
buy ((REMOVE THIS PART)) .com/prod/energizer-8000mah-universal-battery-pack-w-ipad-tip/q/loc/111/216795526.html

I just got the device today, and as I will be out all night, I will make a field test report in the morning to report on it's performance.
First review: Barely pocket sized and heavy. A good indication
Capacity listed on back: 11,100mAh, 3.7V (41Wh)
Output: 5V, 1A
Input (charging): 5V, 2A

For 1/3rd the price, I just cobbled up a 2-D cell battery holder powered with 10,000 mAH Low-Discharge NiMH and wired them up to a circuit board that I puleld from one of those Energizer Pocket Chargers (the things they normall bundle with 2 AA Lithium Cells).
I bolted a belt clip on it, and I'm good to go-and in a pinch I can always slap in a pair of Alkaline D cells.

wazmo said:
For 1/3rd the price, I just cobbled up a 2-D cell battery holder powered with 10,000 mAH Low-Discharge NiMH and wired them up to a circuit board that I puleld from one of those Energizer Pocket Chargers (the things they normall bundle with 2 AA Lithium Cells).
I bolted a belt clip on it, and I'm good to go-and in a pinch I can always slap in a pair of Alkaline D cells.
Click to expand...
Click to collapse
I never thought of that.
But an update on this product. Turns out, you can't leave it plugged in to the wall all the time. Mine died because of that. I sent it back and am awaiting a new one.
But the performance is really good on this thing. This thing sat through 12 hours of continuous use and wasn't near dead when I was done.

I use the PowerTraveller device which is pretty good. It holds almost twice the charge of the phone, and has been a lifesaver twice in my month-long owenership. The only flaw is that it does not seem to turn off if you unplug the phone = discharges if you forget.
That said, for £34.99, it is useful on the go.
http://www.amazon.com/Powertraveller-PowerMonkey-Portable-Charger-iPhones/dp/B0043X9IE4/ref=sr_1_7?ie=UTF8&s=electronics&qid=1288026378&sr=1-7

One of the reasons I avoid those LiOn packs is that when the battery packs die you're sorta screwed in trying to find replacement cells-and based on my experience, I've yet to see LiOn cells last more than 300+ charge/discharge cycles. That's why I still have as my primary Bluetooth headset a Motorola H300 that takes AAA cells. Sure it may not look sexy-but I don't have to pitch it when the cells crap out.

WOW! this is brilliant! could you please post a photo (kind of manual-type). What is the brand of your 2Ds? Aslo, could you please provide some review/technical feedback on how it behaves? How long it charges? how many full cyclescan it go for?
wazmo said:
For 1/3rd the price, I just cobbled up a 2-D cell battery holder powered with 10,000 mAH Low-Discharge NiMH and wired them up to a circuit board that I puleld from one of those Energizer Pocket Chargers (the things they normall bundle with 2 AA Lithium Cells).
I bolted a belt clip on it, and I'm good to go-and in a pinch I can always slap in a pair of Alkaline D cells.
Click to expand...
Click to collapse

I use AccuPower AccuEvolution low-discharge NiMH D cells:
http://www.amazon.com/AccuEvolution-Self-Discharge-NiMH-Cells/dp/B00124BN4U
The circuit board I ripped from the Energizer Energi-to-Go cell phone charger:
http://www.amazon.com/Energizer-Ene...7?s=electronics&ie=UTF8&qid=1288832498&sr=1-7
Here's what the beast looks like cobbled together:
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The D-cell holder has a belt-clip bolted on to it. The circuit board from the energi-to-go is hot-glued on to the top of the battery holder. When the phone is plugged into the pack, the blue LED blinks through the hot-glue.
I expect that I'll get hundreds of cycles from the thing.
I have a smaller lash-up using two sets of AA cells wired in parallel. With the NiMH AA I get about 5-10 charge cycles using Sanyo eneloop AA's depending on the discharge of the phone.

thanks again
wazmo said:
I use AccuPower AccuEvolution low-discharge NiMH D cells:
http://www.amazon.com/AccuEvolution-Self-Discharge-NiMH-Cells/dp/B00124BN4U
The circuit board I ripped from the Energizer Energi-to-Go cell phone charger:
http://www.amazon.com/Energizer-Ene...7?s=electronics&ie=UTF8&qid=1288832498&sr=1-7
Here's what the beast looks like cobbled together:
The D-cell holder has a belt-clip bolted on to it. The circuit board from the energi-to-go is hot-glued on to the top of the battery holder. When the phone is plugged into the pack, the blue LED blinks through the hot-glue.
I expect that I'll get hundreds of cycles from the thing.
I have a smaller lash-up using two sets of AA cells wired in parallel. With the NiMH AA I get about 5-10 charge cycles using Sanyo eneloop AA's depending on the discharge of the phone.
Click to expand...
Click to collapse
Thanks again for detailed explanation! I will try to get the "ingredients" and try to assemble on my own.
I had an urge of buying Energizer Energi-To-Go before, but then i learned that it cannot be used with rechargeables. Is it true?
Correct me if I am wrong with following "naive" calculations - 2 D cells 10000 mAh, 1.2 V each as source and 1280 mAh, 3.7 V HD2 battery as a subject. Assuming the conversion efficiency is somewhere around 80% one gets 0.8x(2x10000x1.2)/(1280x3.7) = 4 for number of full charges of dead empty HD2.
Is it what you experience? (actually that is what i meant under query for number of cycles)

Having ordered from newtrent before, I can say the IMP products work well. I bought one for a collegue, she got 3 full charges off her IMP500 before having to recharge the battery.
They're decent products, well packaged and they do give a decent battery life.

lusjash said:
Thanks again for detailed explanation! I will try to get the "ingredients" and try to assemble on my own.
I had an urge of buying Energizer Energi-To-Go before, but then i learned that it cannot be used with rechargeables. Is it true?
Correct me if I am wrong with following "naive" calculations - 2 D cells 10000 mAh, 1.2 V each as source and 1280 mAh, 3.7 V HD2 battery as a subject. Assuming the conversion efficiency is somewhere around 80% one gets 0.8x(2x10000x1.2)/(1280x3.7) = 4 for number of full charges of dead empty HD2.
Is it what you experience? (actually that is what i meant under query for number of cycles)
Click to expand...
Click to collapse
Older NiMHs cells probably don't have the same load characteristics as the low-discharge cells do-I have used low-discharge cells with the stock energi-to-go and can usually get 2 cycles depending on the state of charge of the phone. However, my Nokia N900 does need a higher input voltage to kick the circuit over-in that case I slap one alkaline and the NiMH and all is well.
I usually don't let the phone get to a complete dead state-that tends to make charging much more challenging. What I have done is I created a cutout in my case where I can connect the headphones and power.

220.000 mAh ext. Battery
More Power ... HAR - HAR - HAR:

karendar said:
Having ordered from newtrent before, I can say the IMP products work well. I bought one for a collegue, she got 3 full charges off her IMP500 before having to recharge the battery.
They're decent products, well packaged and they do give a decent battery life.
Click to expand...
Click to collapse
Try the IMP100/880E. over 24 hours and it's still not dead
hellraiser-rh said:
More Power ... HAR - HAR - HAR:
View attachment 434354
Click to expand...
Click to collapse
That's called **** bricks power

Ya mean Varta actually still lives? Last time I saw a Varta-manufactured cell it was at an IKEA store-now even they went with Chinese-manufactured cells.
Too bad-they could have gone to an American-made battery-Panasonic!

wazmo said:
Ya mean Varta actually still lives? Last time I saw a Varta-manufactured cell it was at an IKEA store-now even they went with Chinese-manufactured cells.
Too bad-they could have gone to an American-made battery-Panasonic!
Click to expand...
Click to collapse
You're damn right, Varta is down the drain.
But it was the firts pic i found
This will also be needed for extreme ext. Power Supply:

This one is the best choice you can make

romskii said:
This one is the best choice you can make
Click to expand...
Click to collapse
Now if we can figure out how to generate power from the wheel: Lucy 4.0 has spun her wheel 360+ km in 430 days per www.hamstertracker.com...

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.

Defy+ external battery/power bank/portable charger

this has been real hell finding information about whether this http://www.ebay.com/itm/Powerocks-p...y_Chargers&hash=item3cc55ca8b0#ht_4645wt_1163 is compatible with my Motorola defy+ (note custom roms, Switching from time to time, Currently on WIUI ICS) and other information such as how long does it last and etc.
has anybody used this?
is it worth the money and how does it translate to battery % on my defy+.
any other feedback?
and maybe other recommendations (with that price region)
and is there a thing like this that uses AA batteries, if so, how many will it take to charge my Defy+
thanks ahead
EDIT:
what's the proper name for that thingy? because this thing has wayyyy too many names,
power bank, external battery, portable charger, portable battery, extra battery. and many many many more!!! this is why it's complete hell finding information.
what's the real and most proper name for it?

Just a single word 'AVOID'

i don't usually like to be disrespectful, but.
you sir, have convinced me with your long list of arguments and good points of reason to support your advice.
could you please explain, why?

Ok. Here it goes.
I have used these chargers long back, I think around a year back. It barely charges 15% of your mobile battery (I was using a Samsung Galaxy Apollo at that time which had a 1500mah battery) with a single AA cell which I think is totally not worth.
I hope this is enough for you to get a fair idea

so, you're saying that the Portable chargers that use AA batteries are bad, or are you saying all these portable chargers are bad and charge too little?
if you're saying that all the portable chargers are bad and charge too little, then i would have to say that it depends on how much mAh the charger can hold.
say i get the 2600 mAh charger to charge my Defy+ (think around 1700 mAh) when it's completely out, i think that i will charge fully at least once (say around 1000 mAh at MOST! is lost because of the charging procedure)

i'm only talking about the AA battery based chargers. I don't have any idea about other powerpacks as I've never used it.

1 AA battery for 225 mAh!?!?!?!? that's awesome!!! would be great for camping trips, you get like 12 AA batteries (or more, depends on how long you plan to be away from charging your phone normally) and you can even play in the evening or even watch porn if you got Data signal!
i'm still probably going for the normal one, and maybe i'll get an extra charger that uses AA batteries in-case i go camping somewhere.
can people please give feedback on whether it's good enough? why are there only 2 posters?

I think that it works just seen a duracell one in a store near me wich holds 4 AA batts, i think on buying it and fillit with some 4 NiMh AA acumulators rated at 2700 mAh each, just think about it thats 10800 mAh in a portable charge, that will charge my Defy battery at least 5 times even with an extra burning that the charge does.
Sent from DefyX RED.

kHron0S said:
I think that it works just seen a duracell one in a store near me wich holds 4 AA batts, i think on buying it and fillit with some 4 NiMh AA acumulators rated at 2700 mAh each, just think about it thats 10800 mAh in a portable charge, that will charge my Defy battery at least 5 times even with an extra burning that the charge does.
Sent from DefyX RED.
Click to expand...
Click to collapse
isn't there a case of voltage involved? (idk, i'm a complete noob in this)
and i need something smaller, something as small as the charger i posted.
i'm just curios to know if it works or not and any other feedback about it.

Bump

bump

Confidential said:
bump
Click to expand...
Click to collapse
lol
NiMHs are 1,2V which means, 2700mAh hold 2700mAh * 1,2V= 3,24 Wh which is the same as 11,664 kJ
The Defy battery holds 1500mah at 3,7V --> 5,5 Wh = 19,98 kJ
Taking efficiency in count you might be able to load your Defy with two fully charged NiMHs once, but i`d rather expect that two are not enough.
As for the that eBay-offer: The voltage is given as 5,1V. With 2600mAh that would mean 13,2 Wh. But i rather believe they are stating the capacity at 3,7V for marketing reasons. That would mean 9,62 Wh. That would allow you to recharge about one and a half time.

bump?
So someones after advice on portable power when away from the mains?
Ive been using a New trent imp1000 to keep things going, its a li-ion rechargable powerpack with a capacity of 11000mah and it keeps my Defy going for 4 days.
I also have a total of three batterys for my defy, and a universal li-ion external charger, called a cam caddy, although its designed to charge camera batterys from a 5 volt supply it also quite happily charges up the battery for my defy as well.
So for extreme use i can have a battery in use in my phon, plus a spare with me, and back at base ( or just overnight) a battery on charge in the cam caddy.
If im in an area with access to mains i will take the imp1000 and its charger to top up where and when i can.
I also have a universal USB charger with swapable plugs that fit all major power outlets worldwide.
And to top it all off a USB AA battery charger that will ( slowly) charge up 4 AA batterys form a solar panel, or from a USB input ( faster) , or output 5V through the USB out put port.
This little set up has kept me going for 14 days with no access to mains power ( except for a few bits here and there - 20 minutes at a bus station/railway station and so on) , keeping my phone going (defy) a high powered AA cree LED torch, a camera ( via spare battery+cam caaddy) and an mp3 player. the trick is careful battery management - on the defy turn off everything when not in use, except the ability to receive calls and number your batterys for ID, and the same for cameras etc etc.

2Pints said:
bump?
So someones after advice on portable power when away from the mains?
Ive been using a New trent imp1000 to keep things going, its a li-ion rechargable powerpack with a capacity of 11000mah and it keeps my Defy going for 4 days.
I also have a total of three batterys for my defy, and a universal li-ion external charger, called a cam caddy, although its designed to charge camera batterys from a 5 volt supply it also quite happily charges up the battery for my defy as well.
So for extreme use i can have a battery in use in my phon, plus a spare with me, and back at base ( or just overnight) a battery on charge in the cam caddy.
If im in an area with access to mains i will take the imp1000 and its charger to top up where and when i can.
I also have a universal USB charger with swapable plugs that fit all major power outlets worldwide.
And to top it all off a USB AA battery charger that will ( slowly) charge up 4 AA batterys form a solar panel, or from a USB input ( faster) , or output 5V through the USB out put port.
This little set up has kept me going for 14 days with no access to mains power ( except for a few bits here and there - 20 minutes at a bus station/railway station and so on) , keeping my phone going (defy) a high powered AA cree LED torch, a camera ( via spare battery+cam caaddy) and an mp3 player. the trick is careful battery management - on the defy turn off everything when not in use, except the ability to receive calls and number your batterys for ID, and the same for cameras etc etc.
Click to expand...
Click to collapse
i think 11000 mAh is a little too much for me, it may be good for camping trips and etc, but i don't think i'm gonna buy something that (probably) big and (probably) expensive. most of the use of the external charger will be when i'm out with friends for a long time, or say after school i spontaneously decide to go out with friends before getting home (unfortunately a 1 hour drive from friends city to mine) so i need an a portable charger so i won't get bored on the way back, my battery lasts a school day, if i go somewhere that is not home after school, it won't last.
about the extra batteries, are those original from motorola? if not, are they as good as the original? are they worth getting?

The batterys are official motorla ones, as i b ought a cheap un official one and that had issues ( wouldnt show the charge level on the defy )
The battery pack is a "new trent imp1000" which costs £30 from amazon.
I also have a dock for the defy in which my phone usualy sits, at the back of this dock is a slot for an extra battery, left overnight this will charge both my Defy ( with battery inside) and the extra battery in the slot, this is plugged into a dektop pc where some of the USB sockets are still powered up ( giving out 5v) even when the desktpop p.c is off

supdealer offers nice portable power bank
as portable external battery/power bank/portable charger, An ebay seller called supdealer sells a nice one. You can have a look.
It may help you. :laugh:

I have that new Trent battery, its perfect almost same size as defy.
Sent from my GT-P3113 using Tapatalk

Guys,
If you really want true power on the go, buy a YOOBAO power pack, the 11200 mAh one.
It is really a beast and is really charging a defy several times before going empty.
http://www.ebay.com/itm/New-Yoobao-...?pt=US_Tablet_Accessories&hash=item3377c5ccd4

One thing to the initial question...
Confidential said:
this has been real hell finding information about whether this http://www.ebay.com/itm/Powerocks-p...y_Chargers&hash=item3cc55ca8b0#ht_4645wt_1163 is compatible with my Motorola defy+
Click to expand...
Click to collapse
Yes, all iPhone compatible USB-Chargers are compatible to our Defy and other new mobiles.
Why? EN_62684: Common External Power Supply (EPS)
Why would I use Li-ion instead of AA Cells (NiCd,NiMH or NiZn)?
Higher Energy Density!
Another benefit of Li-ion is the discharging charakteristika (sorry for german captions).

Anybody tried Solar Powered Battery Chargers?

Hi Guys,
Anyone tried Solar Powered Battery Chargers?
Looking at this one here :
source : 6000 mAh Solar Powered Mobile Power Extended Emergency Battery - Obostore

I'm looking fior the same. I bought recantly GOAL ZERO Nomad -7. Instead of charging it drains the power of my Note-2. I guess it is because of the non-standard pin-out (11 pins), so this is the one I would definitely not recommend.
Arthur

SINGAPOREAN said:
Hi Guys,
Anyone tried Solar Powered Battery Chargers?
Looking at this one here :
source : 6000 mAh Solar Powered Mobile Power Extended Emergency Battery - Obostore
Click to expand...
Click to collapse
I haven't seen any positive reviews about any solar powered chargers. The problem is that you need to apply voltage (bias it) in order for it to work. Like those solar power panels on the roof of people - if you loose a power to the house, they will not work So they might be draining instead of charging lol!!!
Don't know for sure how it works and if it works and how efficiently. So if anybody has any real life experience, please chime in. Most of the big name external battery vendors don't want to carry this product. I only seen it on ebay and Aliexpress.

I personally haven't tried one. From what I've seen about them, they're very fast, and can be nick-picky about the angle to the sun. On top of it, you'll probably need to check what's the output versus what the phone needs to change.
I think you're probably better off finding some kind of crank mechanism and use that to change the phone. Plus, you'll get a little work out too; you'll live longer to enjoy your phone, 8)

I have a voltaic that I use when camping or on extended hikes. It comes with a 3000mah battery. I haven't used it on the Note2 yet, but used it a lot with my Fascinate. The battery works fine as backup power, though it charges slowly and the phone pretty much has to be off for it to be effective. It takes most of a day of full sun to recharge the contained battery. It's ok if you're going to be away from power for a week, but for less than that I think just an extra battery or two fully charged would work better.

I think we just need to find or build one that supports 2.1 amps (ideally) but anything over 1amp should do something.

willfck4beer said:
I think we just need to find or build one that supports 2.1 amps (ideally) but anything over 1amp should do something.
Click to expand...
Click to collapse
I have one I found at Best Buy a couple years ago. It's a single amp box, so charges my Note II very slowly. I've used it on my bike when I'm out on rides. I have a mount for it and my phone. While riding, I use bluetooth headphones. It does work, but like someone else said, there needs to be one with 2.1 amps.

I as well have a Nomad 7, but mine charges my note without issue, although I will admit, it is impractically slow.

I bought this couple of months ago, charging the phone is a wii bit slow but it works like a champ!
http://www.ebay.com/itm/Opteka-4000...iPad-iPod-Android-Phone-Charger-/370665663271

I wouldn't mind if the solar power was a "backup" to a regular external battery, but if all it did was solar I wouldn't be interested.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4 Beta

WICKED... just stumbled across this on ebay. If you are a roll your own DIY type and want to charge a rapid charge device like Note2 or a tablet or something, this might be a great thing to look at.
http://www.ebay.com/itm/DC-DC-5V-36...018?pt=LH_DefaultDomain_0&hash=item2c700c47c2
I, personally, don't like the mini-usb connector... seems kind of goofy. I'd prefer just two wire terminals to connect solar panels to.
But yeah, if you've got high voltage solar setup... e.g. anything between 5V and 36V and want to have a clean, regulated 5V usb compliant output, this would likely be your guy. I'd also want to make sure it really does work with note2 - in terms of negotiation of currents higher than 100ma. YMMV FWIW
AND if you don't need note2/tablet 2A...
this guy seems like about the right fit.
http://www.ebay.com/itm/DC-DC-12V-2...965?pt=LH_DefaultDomain_0&hash=item4d0c738c65

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
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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
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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)
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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!
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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
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Understood, makes no sense to ship back'n'forth.
rhd-android said:
I use a VA Meter that came from a Chinese gadget site.
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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.
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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?
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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.