Related
Hi,
I just stuck here, cause I found a thread about fast usb charging. But there is no answers or solutions.
I have many htc devices. It seems that some of them has a problem with 3rd party usb chargers.
My most used device is Universal. It suck a lot of power. THis one doesn't enable usb charging at all, until you put it in sleep mode before pluging the charger.
Anyway, the same issue for Kaiser too.
The problem is, that it doesn't matter how much current is the charger able to deliver. They just use some kind of recognition of original chargers.
What I already measured: Original charger and universal running => takes 1200mA. 3rd party charger or my 5A PSU => Universal/Kaiser sucks just 500mA.
This is fast/slow charge. I found here discussion about 4 and 5 pins shorted??
But WTF which 4 & 5 pin?
http://www.tracyandmatt.co.uk/blogs/index.php/2006/09/10/htc_hermes_usb_connector_pin_config
According to this pinout. It would be 2 GND of Audio side? I'm not sure that original charger use extUSB audio side to charge...? It also could be D & A pins, but I'm afraid to connect 5V to Data- pin.
Anyway, someone here have to know it.
If not, in a few days I'll try all possible combinations and post the results.
Thanks
Shef
I'd also be interested to know about this. When I charge my TYTN II via USB, it takes much longer to charge than if I charge it via the mains charger (I prefer USB since I travel a lot and it's one less charger I need to carry around).
Better still, is it possible to buy a USB cable that will charge at the same rate as the mains charger rather than messing with a USB cable with the associated risks?
Best,
Gary.
Shef said:
Hi,
What I already measured: Original charger and universal running => takes 1200mA. 3rd party charger or my 5A PSU => Universal/Kaiser sucks just 500mA.
This is fast/slow charge. I found here discussion about 4 and 5 pins shorted??
But WTF which 4 & 5 pin?
http://www.tracyandmatt.co.uk/blogs/index.php/2006/09/10/htc_hermes_usb_connector_pin_config
Click to expand...
Click to collapse
a usb port only supplies 500ma, while the wall charger does 1200ma as the OP has measured (although it says 1A at the back of the charger). changing a cable is not gonna superpower up your usb port.
unless maybe you get hold of a forked USB cable, like the one that Seagate Free Agent drives come supplied with... you know, 1 mini USB splitting halfway down to two normal USB plugs.
Worth experimenting with, do you think?
wyrm said:
unless maybe you get hold of a forked USB cable, like the one that Seagate Free Agent drives come supplied with... you know, 1 mini USB splitting halfway down to two normal USB plugs.
Worth experimenting with, do you think?
Click to expand...
Click to collapse
good call.......with a little googling i came up with this
http://www.universaluk.com/acatalog...2_x_Type_A_to_mini_B__USB_2_0__1m__Lindy.html
tried ebay, my brief search came up with lots of unrelated results, so i gave up
I got one of those leads, came with my portable 2.5" hard drive. Just tried the lead on my Tytn 2 and it does charge almost as fast as the mains plug
Success
Ok, so, I tried to experiment.
Here you go.
Usb simple cable 480ma charge.
The same result with Motorola charger.
Motorola charger pins A and B short circuit - 890mA.
That's much better, althrough I suppose it can suck more current then 890mA, but it's significantly better.
THere is also pins data+ and data- short circuited (I don't know if it has effect, but I can't disconnect it in this connector).
Apparently NC (not connected) pin on our pinout schematics definitely is connected.
With % of charged battery it suck less and less current....I suppose it's usual, this should be even driven by ROM.
So, update your cables
It works even with car charger, so no more charger problems...
Shef
Just to be clear - you took a Motorola USB cable and shorted pins A and B (which are which by the way?) and it provides a decent current....
How do you short the pins? I've looked in the end of cable and I can hardly see the pins, let alone short them! What's the trick here or have I missed something?
Thanks,
Gary.
Shef said:
Ok, so, I tried to experiment.
Here you go.
Usb simple cable 480ma charge.
The same result with Motorola charger.
Motorola charger pins A and B short circuit - 890mA.
That's much better, althrough I suppose it can suck more current then 890mA, but it's significantly better.
THere is also pins data+ and data- short circuited (I don't know if it has effect, but I can't disconnect it in this connector).
Apparently NC (not connected) pin on our pinout schematics definitely is connected.
With % of charged battery it suck less and less current....I suppose it's usual, this should be even driven by ROM.
So, update your cables
It works even with car charger, so no more charger problems...
Shef
Click to expand...
Click to collapse
Also interested in how to short the pins. I use Navizon, bluetooth HSDPA tethering, and iGuidance while on the ambulance and even my iGo 3A max rated charger can barely keep up because the tilt wont accept all of the available current.
So have anyone found a way to fast charge our ppc through usb??
Yes, that is correct. Short pins 4 & 5 (4 is normally NC) to enable fast-charging. If you do it correctly, the phone shouldn't pick up tethering, and therefore should not say "PC Connected" or the like..
The TracyAndMatt pinout is wrongly numbered. The pin assignments are correct, but the number/letter scheme they used is incorrect. True ExtUSB pinout translation to their pinout is as follows:
T & M Real ExtUSB
-------------------------------
Pins E D C B A = 1 2 3 4 5
Pins 1 2 3 4 5 6 = 6 7 8 9 10 11
The way I remember is that the corner opposite the angled one is where pin 1 starts (where E is on the T&M pinout) - and they go like most IEC-standard connectors, in a clock-like circular numbering scheme.
Here's a better pinout: http://pinouts.ru/PDA/htc_extUSB_pinout.shtml
Hope this helps!
--W5i2
its the milliamps that is the problem even doubling up with a y splitter does not do much Find a charger with the most milliamps for a faster charge 1.2 amps works best and as far as i know no usb port puts out that much even if they are wired in a series. Many try to sell lower amp chargers they dont even know about it at att. if the screen is off they will charge but not well these phones are energy hogs. I must have at least twenty chargers and messed around with them... the original or one of highest amperage works for me.
Check winhlp.com/node/855 for the answer.
htc_battery_trout.c said:
/* A9 reports USB charging when helf AC cable in and China AC charger. */
/* Work arround: notify userspace AC charging first,
and notify USB charging again when receiving usb connected notificaiton from usb driver. *
Click to expand...
Click to collapse
I find this annoying. I can't tell if my wall charger is fast charging or not because the G1 always says "AC"
hgmichna said:
Check winhlp.com/node/855 for the answer.
Click to expand...
Click to collapse
That is not going to help HTC owners.
HTC charging cable
kiss_se said:
That is not going to help HTC owners.
Click to expand...
Click to collapse
http://winhlp.com/node/855 was explicitly written for HTC smartphone owners.
hgmichna said:
[...] was explicitly written for HTC smartphone owners.
Click to expand...
Click to collapse
Sorry, I meant to say: That is not going to help extusb owners.
hgmichna said:
Check winhlp.com/node/855 for the answer.
Click to expand...
Click to collapse
Is it possible to get one of the 'fast charge' enabled USB cables on eBay or elsewhere? I am not keen on doing the mod described.
What is the maximum mAh recommended for HTC devices? Is it still 1.2 A or more?
zurpher said:
Is it possible to get one of the 'fast charge' enabled USB cables on eBay or elsewhere? I am not keen on doing the mod described.
Click to expand...
Click to collapse
Check http://winhlp.com/node/855#qaes for the only buyable solution I know, besides compatible chargers. Your best bet is probably the original HTC charger, available for roughly $10.
zurpher said:
What is the maximum mAh recommended for HTC devices? Is it still 1.2 A or more?
Click to expand...
Click to collapse
There can be no recommended maximum mAh. There can only be a required current, which differs from device to device. Check Ohm's Law. The device determines how much current it draws. If the charger cannot deliver that current, then the charging process can fail in various ways, all undesirable.
hgmichna said:
Check http://winhlp.com/node/855#qaes for the only buyable solution I know, besides compatible chargers. Your best bet is probably the original HTC charger, available for roughly $10.
There can be no recommended maximum mAh. There can only be a required current, which differs from device to device. Check Ohm's Law. The device determines how much current it draws. If the charger cannot deliver that current, then the charging process can fail in various ways, all undesirable.
Click to expand...
Click to collapse
Could the USB Switching 2A Power Charger Adapter Convertor Plug be similar in function to the one that you've linked?
zurpher said:
Could the USB Switching 2A Power Charger Adapter Convertor Plug be similar in function to the one that you've linked?
Click to expand...
Click to collapse
I don't know, but probably not. Apple used to use a different signalling scheme involving resistors.
Hi,
I purchased an official Samsung "Travel" charger from my Tab. I expected to receive a mains adaptor with interchangeable plugs (e.g. Euro, GB, US etc), and another USB cable.
However, when I opened it up, I had a mains adaptor, a GB plug, and a USB cable.
According to all the packaging, this is correct - however, as far as I'm concerned this isn't a "Travel" charger - it's just a spare charger.
I'm ok with it as I've plenty of GB-to-EU and GB-to-UK adaptors, but I thought it worthwhile posting a warning that this isn't really what it is advertised to be.
Regards,
Dave
foxmeister said:
I purchased an official Samsung "Travel" charger from my Tab. I expected to receive a mains adaptor with interchangeable plugs (e.g. Euro, GB, US etc), and another USB cable.
However, when I opened it up, I had a mains adaptor, a GB plug, and a USB cable.
According to all the packaging, this is correct - however, as far as I'm concerned this isn't a "Travel" charger - it's just a spare charger.
I'm ok with it as I've plenty of GB-to-EU and GB-to-UK adaptors, but I thought it worthwhile posting a warning that this isn't really what it is advertised to be.
Click to expand...
Click to collapse
Pretty much all of the "compact" AC adaptors get referred to as "travel" chargers, it's nothing new, Nokia have been doing it for years, and theirs don't even have interchangeable plugs on them. Not that you can buy the plug part of them separately anyway so I'm not sure why they make them removable other than for their own benefit.
It basically means that it will work across voltage differences without blowing up
So far, the best thing I found is this:
4 port USB AC adapter
It has all standard electric adapters, is very compact, has 4 USB slots (so you can use it for other stuff too) and the price is great.
Also, I checked with the seller - it will charge the Tab normally, but in that case you can't use other USB slots. The charger gives 5V 2A, shared among the 4 ports. If you use just one slot, that one gets all the juice. If you plug in 2 devices, the power is split among them etc.
geoffcollins said:
It basically means that it will work across voltage differences without blowing up
Click to expand...
Click to collapse
So does the standard charger, because it is identical!
Regards,
Dave
foxmeister said:
Hi,
I purchased an official Samsung "Travel" charger from my Tab. I expected to receive a mains adaptor with interchangeable plugs (e.g. Euro, GB, US etc), and another USB cable.
However, when I opened it up, I had a mains adaptor, a GB plug, and a USB cable.
According to all the packaging, this is correct - however, as far as I'm concerned this isn't a "Travel" charger - it's just a spare charger.
I'm ok with it as I've plenty of GB-to-EU and GB-to-UK adaptors, but I thought it worthwhile posting a warning that this isn't really what it is advertised to be.
Regards,
Dave
Click to expand...
Click to collapse
Do you have a link Dave, I'm looking to purchase a USB Mains plug with a USB to 30 pin cable for the Tab.
I was really disappointed by this too.
However, the section of the adapter with the UK pins should slide off (slide it up). Then you can plug a standard 2 pin AC cable into the adapter - like those which come with printers. The pins adapters are supposedly available to make these a true travel adapter but I have yet to find them anywhere.
I haven't seen a thread that addresses this specifically:
After reading the threads in this section, it seems that the consensus is that the "fast charging" aspect of the NC is based on extra pins in the special NC cable. When connected to any charger with 1.9amps or greater, you will get the fast charge.
My experience is different.
Using the OEM NC cable:
1. Connected to OEM charger, stock ROM - settings say charging, flashes an icon with charging percent on connection and removal
2. Connected to OEM charger, CM7 - settings say Charging (AC).
3. Connected to 2.1 and 2.0 amp chargers, stock - settings say Not Charging.
4. Connected to 2.1 and 2.0 amp chargers, CM7 - settings say Charging (USB)
Using the generic microusb cables (2 or 3 tried):
1. Connected to OEM charger, stock ROM - Can't remember, but not going back to stock!
2. Connected to OEM charger, CM7 - settings say Charging (AC).
3. Connected to 2.1 and 2.0 amp chargers, stock - settings say Not Charging.
4. Connected to 2.1 and 2.0 amp chargers, CM7 - settings say Charging (USB)
This seems to imply that the OEM charger is required to really use the extra pins in the NC OEM cable. Can anyone test and confirm this?
Alan
The nook charger puts out almost 2A of power, where normal usb chargers and ports on computer only put out 500mA. The cable that the nook comes with has some terminations in it that allow the nook to tell when it is connected to the nook charger. It will charge at a much faster rate when using the combination of the charger and cable that came with the nook. Replace either the cable or the charger with anything else and you get low power charging mode which is very slow.
Nook Charger
I keep seeing reports of people getting a fast charge using various other equipment, as long as the chargers are rated >= 1.9A.
Can anyone confirm or deny this? Any testing?
As long as a charger puts out near 2A of current, it should work. The charger itself is just a four pin USB charger. The cable itself... lots of pins in the connector to the NC.
FrayAdjacent said:
As long as a charger puts out near 2A of current, it should work. The charger itself is just a four pin USB charger. The cable itself... lots of pins in the connector to the NC.
Click to expand...
Click to collapse
That's what everyone's been saying, but it doesn't work that way in my testing. I have tried 3rd party chargers that output 2.0 and 2.1A, using the OEM cable. None of them are recognized as an AC charger. If we knew how the NC knows when it's connected to the original charger, we could find a way to modify something available at WalMart to quick charge our NC's. There's plenty of Ipad chargers (2.1A) available. The one I have doesn't work, though.
Alan
Update to my previous post:
When I got home from work I tested my ipad charger (2.1A) with the nook color cable and it seemed to act like the nook charger. I did not think any charger but the nc one would work, but it seems it does.
I am jealous. My Ipad charger (OEM) paired with the nook cable shows Charging (USB) under Settings --->About Tablet--->Status. I would love know how to get it to say Charging (AC) .
Alan
Keep your eyes open people...as soon as I return to work and have extra cash I plan on ordering and tearing down a charger and cable. Many have noticed poor quality in the chargers..I'm gonna try to engineer an open DIY charger and cable replacement with better filtering components. Hopefully will be creating a thread with full details in 3 weeks...
Sent from my NookColor using Tapatalk
deadbot1 said:
Keep your eyes open people...as soon as I return to work and have extra cash I plan on ordering and tearing down a charger and cable. Many have noticed poor quality in the chargers..I'm gonna try to engineer an open DIY charger and cable replacement with better filtering components. Hopefully will be creating a thread with full details in 3 weeks...
Sent from my NookColor using Tapatalk
Click to expand...
Click to collapse
YAY! I have my soldering station warming up.
Cheers,
kev
yep, this is overdue...plugged in last night...almost burned my hand after an hour of charging. I keep my charger by the bed and the hum is just annoying when I'm feeling a bit restless.
Is there a way to identify problem chargers?
There must be some real inconsistency in the charger build quality. I've never noticed mine gets more than just a tiny bit warm and no humming. I wonder if there was a bad lot of them made? I was trying to look at the charger to see if there is a lot # or such, but can't tell what half the darned thing says. I'm posting a pic of the text on my charger in the hopes we can figure out if there is some way to identify problem chargers.
Edit: My nc came from WalMart.
Well there is a difference in the markings at least...The area circled in red...On mine it is R1101.
Still made in China
Edit: BTW my unit came from Walmart. Not sure if there would be any accounting for things like that.
deadbot1 said:
Keep your eyes open people...as soon as I return to work and have extra cash I plan on ordering and tearing down a charger and cable. Many have noticed poor quality in the chargers..I'm gonna try to engineer an open DIY charger and cable replacement with better filtering components. Hopefully will be creating a thread with full details in 3 weeks...
Sent from my NookColor using Tapatalk
Click to expand...
Click to collapse
Sounds great. The simple tests I have done have yielded more quetions then answers.
Looking forward to your data.
ive noticed i cant transfer data on anything other than the nook cable.
The NC cable is special. It wont fit other devices.
described over here....
http://en.wikipedia.org/wiki/Nook_Color
Charging the NC on a regular microUSB means much longer time.
swaaye said:
The NC cable is special. It wont fit other devices.
described over here....
http://en.wikipedia.org/wiki/Nook_Color
Charging the NC on a regular microUSB means much longer time.
Click to expand...
Click to collapse
Yeah, this much is well known...my plan is to find out if there are "brains" in the charger or if it's just a high amp USB adapter. If the latter is true( which I suspect), then it's easy peasy to make a high power port( or just buy a quality one). If it has special circuitry...then I get to try and replicate it( with better parts) and release the plans so others can make DIY replacements.
Edit: I'm willing to bet that the extra pins in the cable are just to increase contact surface...to handle the higher amperage.
Sent from my NookColor using XDA Premium App
boogerboy72 said:
ive noticed i cant transfer data on anything other than the nook cable.
Click to expand...
Click to collapse
That is totally wrong, since other cables WILL transfer data just fine. I use an LG Micro USB cable from my old dare, and am able to ADB push, install, etc just fine.
As it is, the large end of the Nook's USB cable is normal; this means that if the nook is communicating, it is doing so over the standard USB data ports, and not through some special connection. Keep in mind that some of the extra pins from the micro side are for the status light that is built in.
Hmm R1102 here showing 1.9A output
I'm curious.. some people have talked about warranty replacements. What R versions are those?
Divine_Madcat said:
That is totally wrong, since other cables WILL transfer data just fine. I use an LG Micro USB cable from my old dare, and am able to ADB push, install, etc just fine.
As it is, the large end of the Nook's USB cable is normal; this means that if the nook is communicating, it is doing so over the standard USB data ports, and not through some special connection. Keep in mind that some of the extra pins from the micro side are for the status light that is built in.
Click to expand...
Click to collapse
Hmm....hadn't thought of that...that charger almost has to be dumb...just higher output...the smarts all have to be in the USB/power management chip in the nook. Those extra pins must be for the led and maybe a few for handling the higher amperage. Need to check out the spec sheet for that chip again...
Sent from my NookColor using XDA Premium App
Why does it HAVE to be dumb? I mean, the charger needs to do nothing more than respond to a ping, saying "Hey, im a Nook charger, take me for a 1.9A ride!". I guess that makes it dumb, but no reason said technology won't be in the charger.
Found this external battery with good pricing. Anyone tried this? Does it work with NC?
monoprice.com/products/product.asp?c_id=108&cp_id=10833&cs_id=1083311&p_id=7664&seq=1&format=4#feedback
It certainly should work.
The connections are a little confusing. The male micro-USB coming off the top suggests that you need to connect it to your nook, which would make the whole thing a little unweildy. Also, how is it charged? From a PC? From a AC/USB adapter?
I bought a couple of these:
http://www.dealextreme.com/p/usb-re...emergency-power-with-cell-phones-holder-44749
They're only 2000 mAh, but you can connect them to the nook with the proprietary nook USB cable. Even though they're rated at 1A, my nook recognizes as 2A...
Bonus: built in fold up wall charger.
Not-so-bonus: DealExtreme ships from Hong Kong. Delivery time is measured using the geologic time scale.
ks88 said:
Found this external battery with good pricing. Anyone tried this? Does it work with NC?
monoprice.com/products/product.asp?c_id=108&cp_id=10833&cs_id=1083311&p_id=7664&seq=1&format=4#feedback
Click to expand...
Click to collapse
I actually have one. It works with my EVO, but not the Nook Color. You can look at the reviews for the item and see others have similiar issues with other micro USB devices. I think I'm going to order a M/F micro usb extension cable from ebay....hopefully it helps this work with my NC.
Micro USB M/F Extension
Johnny,
Are you sure its not charging? The output of the device is 800mA, and the output of the stock charger is 2000mA. So although it may be charging slowly, the nook would not report it as charging. Would you be able to plug it in and leave it for a while and see if the battery% increases?
I'm positive it's not charging. The micro USB seems to be slightly different than "standard" and thus, doesn't fit all the way into the port on the NC. I can try one more time when I get home today, but I don't think it'll go.
I wish this wasn't the case and I've tried it a handful of times when I first bought it. I've only been using it on my phone lately...
Ah ok - if you get the cable and it works let us know It is a good price even with the cable (about $20 total with battery shipping and free shipping for cable), and if that works it would be pretty sweet!
dennisi01 said:
Ah ok - if you get the cable and it works let us know It is a good price even with the cable (about $20 total with battery shipping and free shipping for cable), and if that works it would be pretty sweet!
Click to expand...
Click to collapse
I'll keep you posted. I had been debating whether or not to buy the cable, but for $5 and I can extend the use of my charger, I finally figured it'd be worth it....that and the fact that I want to help people out here so no one buys the charger itself thinking it'll work.
I ordered that cable yesterday, so when I get it (from China) I'll let you know whether it works or not.
johnny15 said:
I'll keep you posted. I had been debating whether or not to buy the cable, but for $5 and I can extend the use of my charger, I finally figured it'd be worth it....that and the fact that I want to help people out here so no one buys the charger itself thinking it'll work.
I ordered that cable yesterday, so when I get it (from China) I'll let you know whether it works or not.
Click to expand...
Click to collapse
I'm interested to know too. Thanks alot bro!
Ok. I got that battery from Monoprice, and it charges my nook without any hassle.
Just need to be a little bit precise on plugging it into the micro USB female on the nook.
jemping said:
Ok. I got that battery from Monoprice, and it charges my nook without any hassle.
Just need to be a little bit precise on plugging it into the micro USB female on the nook.
Click to expand...
Click to collapse
Well, mine does not....wonder what the difference is???
Jgrimoldy said:
It certainly should work.
The connections are a little confusing. The male micro-USB coming off the top suggests that you need to connect it to your nook, which would make the whole thing a little unweildy. Also, how is it charged? From a PC? From a AC/USB adapter?
I bought a couple of these:
http://www.dealextreme.com/p/usb-re...emergency-power-with-cell-phones-holder-44749
They're only 2000 mAh, but you can connect them to the nook with the proprietary nook USB cable. Even though they're rated at 1A, my nook recognizes as 2A...
Bonus: built in fold up wall charger.
Not-so-bonus: DealExtreme ships from Hong Kong. Delivery time is measured using the geologic time scale.
Click to expand...
Click to collapse
I'm interested in a similar charger, but with 2400mah.
http://www.dealextreme.com/p/2400ma...a-cable-for-htc-desire-g5-samsung-i9000-57905
Does it work with your android phone? A lot of after market chargers makes the touch screen unusable while charging. Does it work both while plugged into the wall and using the internal battery?
Interesting topic.
Let me see if I got this straight.
This device has double function?
-If Nc needs charging, U just plug this device and U can have extra power on the move?
-Also, it gets connected to normal wall plug and through this U charge your NOOK?It can work as alternative nook charger (but for sure in slower rate)??
I bought an Energizer XP2000 for about $35 at an OfficeMax (they're widely available). 2000 mAh capacity, weighs about 2oz, comes with its own cord with six different ends for different devices. I plugged it into my fully-charged Nook at 10,000 ft out of Seattle, watched non-stop video at 70% brightness in Airplane Mode for nearly five hours to Baltimore and still had 58% battery left on my Nook (the Energizer was discharged). Other chargers in the line go up to an insane XP1800 that'll power a LAPTOP for six hours!
The sweet spot for me is probably the XP8000. It's max output is 3500mA vs. 500mA for the XP2000, it's the size of two iPod Classics stacked on one another but weighs a little less and it should keep me going for a looong trip. It's $100 so its not an impulse buy (at least for me) but seems like an essential tool for the long distance traveler.
http://www.energizerpowerpacks.com/us/products/xp2000/
rcboosted said:
I'm interested in a similar charger, but with 2400mah.
http://www.dealextreme.com/p/2400ma...a-cable-for-htc-desire-g5-samsung-i9000-57905
Does it work with your android phone? A lot of after market chargers makes the touch screen unusable while charging. Does it work both while plugged into the wall and using the internal battery?
Click to expand...
Click to collapse
I use this with my nook. I can't answer any questions related to workability with Android phones. That's not this forum.
While using this device to charge my nook, my nook is completely usable. It will charge my nook when the device is plugged into the wall. It will also charge my nook when it's not plugged into the wall (it is a battery, after all). In either situation, my nook is completely usable when connected to this.
I use this battery with my proprietary nook charging cable.
Jgrimoldy said:
I use this with my nook. I can't answer any questions related to workability with Android phones. That's not this forum.
While using this device to charge my nook, my nook is completely usable. It will charge my nook when the device is plugged into the wall. It will also charge my nook when it's not plugged into the wall (it is a battery, after all). In either situation, my nook is completely usable when connected to this.
I use this battery with my proprietary nook charging cable.
Click to expand...
Click to collapse
Thanks for this report. My nook goes crazy when I use the same aftermarket charger that makes my phone unusable while charging. It acts as if someone is hitting the screen randomly very quickly. If you're not having issue with the nook on this charger, I'm confident it won't have issues with my phone either. I will order 1 and find out for sure.
lesdense said:
I bought an Energizer XP2000 for about $35 at an OfficeMax (they're widely available). 2000 mAh capacity, weighs about 2oz, comes with its own cord with six different ends for different devices. I plugged it into my fully-charged Nook at 10,000 ft out of Seattle ...
Click to expand...
Click to collapse
Wonderful report. I'm in the market for an external battery. A couple of questions if I may.
So one of the 6 tips works with an NC? I thought the NC's cord and tip were special to enable the quick charging. Do the Energizer products support this technology?
At dealextreme there is also 3000 battery. Why not using that?
The bigger the better right?
Sent from my NookColor using Tapatalk
d.v said:
Wonderful report. I'm in the market for an external battery. A couple of questions if I may.
So one of the 6 tips works with an NC? I thought the NC's cord and tip were special to enable the quick charging. Do the Energizer products support this technology?
Click to expand...
Click to collapse
The micro USB tip that comes with the Energizer works fine with the Nook. I don't know about "fast charge" vs. "slow charge" and all that but it definitely works. One SUBSTANTIAL advantage of the XP2000 over the larger capacity models (of the Energizer line) is that you can use any USB-to-mini USB cable, including the one that comes with it, and plug it into either a USB power plug adapter or a USB port on a computer to charge it. The XP4000, XP8000 and XP18000 all require their own power adapter. It's included in the purchase of course but I don't like carrying around another cord. Not a deal-breaker, just a factor.
johnny15 said:
I'll keep you posted. I had been debating whether or not to buy the cable, but for $5 and I can extend the use of my charger, I finally figured it'd be worth it....that and the fact that I want to help people out here so no one buys the charger itself thinking it'll work.
I ordered that cable yesterday, so when I get it (from China) I'll let you know whether it works or not.
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Well, I said I'd update once I recieved my extension cable, so here it is...
I finally received my extension cable and it allows me to use my Monoprice charger with my Nook, so that's great. In the end, it wasn't needed. I ended up RMA'ing my charger back to Monoprice because the thing had a dull buzz when not being used and a high pitch noise when either charging a device or being charged. I'm happy to report that the new charger works with or without the extension cable on my Nook Color and on my EVO 4G. In the end though, I like the extension cable because it gives me more flexibility when using the charger.
Here are the links again...
Monoprice Charger
Extension Cable
lesdense said:
The micro USB tip that comes with the Energizer works fine with the Nook. I don't know about "fast charge" vs. "slow charge" and all that but it definitely works. One SUBSTANTIAL advantage of the XP2000 over the larger capacity models (of the Energizer line) is that you can use any USB-to-mini USB cable, including the one that comes with it, and plug it into either a USB power plug adapter or a USB port on a computer to charge it. The XP4000, XP8000 and XP18000 all require their own power adapter. It's included in the purchase of course but I don't like carrying around another cord. Not a deal-breaker, just a factor.
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Got it. The slow vs fast charge would be a good thing to know. Can you time a charge with the Energizer unit and one with the stock NC charger? If it can fast charge, the Energizer would make a great addition to the NC.
Thanks either way. The info has been helpful.
EDIT - Post #6 has a quote from Kensington confirming the charger does not work with the Nexus Tablet
So been trying to get a dual-USB 2.1A charger to use with my Nexus 7 and my old desire-Z phone (I also have a 1st gen iPad so figured would be a nice perk for both ports to deliver that juice).
I even went as far as buying a new USB Cable thinking something was wrong with my cable and flashing a couple of different kernels (thinking it was maybe that).
Fact is whenever I plug my N7 into a Kensington AbsolutePower 4.2 w/ PowerWhiz (K39690AM), Battery Monitor Pro widget will say in green "AC Plugged", "Discharging", and if it does show "Charging", it's only drawing in around 130mA or so. But yet on my Desire-Z (G2) I plug that in, it'll show maybe around 500mA (it won't go over 1A because it's designed not to for smart phones).
However If I plug the N7 into a Samsung 2.1A charger that came with a Galaxy Tab 2 7.0, The N7 will show a power draw from the charger a little above 1,800mA (and then goes down to around 500 or less once it hits 99%), similar situation with the samsung charger + my G2.
So I'm constantly googling trying to figure out whats up, and the only thing I've come across are various reviews on Amazon (they list this as a Dual 2.1A USB charger), with some complaints saying they don't work with Asus Tablets and another saying it wouldn't charge much at all on his Nexus 10.
So I'm wondering... what's up with that, and why does it not say it's not compatible on the box (though guess they sort of did by excluding Asus and Google from the list of brands on the side).
Its charging. Just the os is not showing it properly
Sent from a phone that's 2 Note-worthy, via XDA Premium HD app.
madman604 said:
Its charging. Just the os is not showing it properly
Sent from a phone that's 2 Note-worthy, via XDA Premium HD app.
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As I said, I'm using Battery Widget Monitor Pro. IF it was only the OS it would show the exact same deal with the Samsung 2.1A Charger, Nook 1A charger, HTC 1A charger. But instead on ALL chargers except the Kensington one, it shows a much higher charge rate (on the 1A around 800mA charge, on the Samsung around 1.7A charge).
But on the Kensington one never more than 500mA (usually around 300-400). I even exchanged the unit for a new one, and still the exact same behavior. I think the powerWhiz feature of the charger is detecting it not as a tablet but rather as a generic USB Device and is not providing more than 500mA for 'safe' charging. Just like how it won't charge my phone past 1A since it's detected as a SmartPhone even though it's a 2.1A port.
kbeezie said:
As I said, I'm using Battery Widget Monitor Pro. IF it was only the OS it would show the exact same deal with the Samsung 2.1A Charger, Nook 1A charger, HTC 1A charger. But instead on ALL chargers except the Kensington one, it shows a much higher charge rate (on the 1A around 800mA charge, on the Samsung around 1.7A charge).
But on the Kensington one never more than 500mA (usually around 300-400). I even exchanged the unit for a new one, and still the exact same behavior. I think the powerWhiz feature of the charger is detecting it not as a tablet but rather as a generic USB Device and is not providing more than 500mA for 'safe' charging. Just like how it won't charge my phone past 1A since it's detected as a SmartPhone even though it's a 2.1A port.
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The N7 has a circuit to detect whether the USB cable is plugged into its charger or into a regular USB port. The N7's charger shorts the two data pins. If your charger doesn't short those two pins, the N7 will never go into "high charge" mode.
There is a simple mod to do. Either take the charger apart and short what the data pins should be on the usb port or short the data wires together in a cheapo usb cable at the micro usb side. That will make a charge only cable but it will give. What you need.
Sent from my SPH-D710 using xda premium
So turns out I wasn't crazy after testing two of their chargers.
Dear Karl:
Thank you for contacting Kensington Technical Support.
We understand that our Absolute Power™ 4.2 Dual Fast Charge is not charging your Nexus tablet properly, we regret to inform you that Absolute Power™ 4.2 Dual Fast Charge for Tablets is not compatible with Nexus Tablet, hence we would be glad to refund you the amount.
If the date of purchase is within 90 days, we request you to utilize the 90-days Money Back Guarantee policy.
Please click on the following link to know about the 90-days Money Back Guarantee form
http://www.kensington.com/kensington/us/us/s/1570/90-day-money-back-guarantee.aspx
We are sorry for the inconvenience caused.
If you need further assistance, please feel free to reply to this message.
For any further assistance please feel free to reply back to this email or you may want to call us on our toll-free number 1800-535-4242, Mon Fri 07:30 am to 04:30 pm PST.
Please Read This!
Kensington Technical Support incidents are only processed via our support web site, not via email. Please do NOT reply to this email, but rather you must click on the link below which will bring you to the Kensington Technical Support web portal where you can initiate questions, modify your active incidents, or perform maintenance on your support account.
Again, please do NOT respond to this incident via email, please click on the link below to access your support incident. Thank you.
http://www.kensington.com/kensington/us/us/s/1708/mystuff.aspx
Kensington Computer Products Group
Regards,
Shiva Kumar
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graydiggy said:
There is a simple mod to do. Either take the charger apart and short what the data pins should be on the usb port or short the data wires together in a cheapo usb cable at the micro usb side. That will make a charge only cable but it will give. What you need.
Sent from my SPH-D710 using xda premium
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Click to collapse
Yea... I'm not taking apart a charger. I just returned the second one to the store where I got it and got one that did work. Also that method won't work with the kensington, with it's powerwhiz feature if it can't detect the device it'll limit to 500mA for safety.
Besides I've already returned the second charger (I exchanged the first one, re-ran tests, etc), and ended up getting an RCA 4-outlet power strip/surge protector that has two USB ports (one for 2.1A charging) that does work.
All android devices look for 200ohms on the data pins to determine if it is a charge vs data source. Except the handful of proprietary connections (ex:Nook Color).
Yep. All things said in this thread are true. What I've found to work great with the stuff I already have is a Samsung Galaxy S4 charger. That thing
charges the N7 at about 1500 mA. Measured with my multimeter. It's weird though,
it'll start around 800mA and after about 45s to a minute it will start pulling in almost double that.
Crazy.