Database Users

Charging Problem

I am having trouble charging my tablet. When the tablet is on, I am unable to charge with either the POGO or USB cable. I have also tried other wall chargers for cell phones. I was not using any roms, but had tried out the ktmantra kernel. I have since wiped my tablet using a factory 4.2.2 image from google and am still having the charging problem.
The only way I am able to charge is by charging with the tablet off. It also takes ages to charge (12+hours). Any ideas on what could be causing this? When I plug the POGO cable in, it says it is charging, but the battery percentage continues to drop.

ab325 said:
I am having trouble charging my tablet. When the tablet is on, I am unable to charge with either the POGO or USB cable. I have also tried other wall chargers for cell phones. I was not using any roms, but had tried out the ktmantra kernel. I have since wiped my tablet using a factory 4.2.2 image from google and am still having the charging problem.
The only way I am able to charge is by charging with the tablet off. It also takes ages to charge (12+hours). Any ideas on what could be causing this? When I plug the POGO cable in, it says it is charging, but the battery percentage continues to drop.
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I've readed some comment on another forum from an user that has the same proble, but for him it takes about 10h. Not sure what's wrong.

Are you not able to charge at all or just very slowly? I just noticed that my Nexus is charging very slowly with the Pogo cable I purchased. I may try going back to the usb cable to verify that the problem is with the cable and not with the tablet.

I was getting very slow charge rates with my usb charger. Around 12 hour charge times even when completely powered off. Anyway, my problem was with using a USB extension cable. Since I started plugging it directly into the wall I've been seeing charge times in the 5-6 hour range. My iPad never had an issue with it, but whatever! You might also try a different wall outlet.
Sent from my Nexus 10 using Tapatalk HD

I cant seem to solve this problem. I have tried using pogo and usb cables with two different chargers. I have also tried using different wall mounted phone chargers. I am not able to get any positive charge while the tablet is on. Using the battery monitor widget, I used to see a +1800 charge with the pogo, and a bit less with the usb cable. Now, the highest I get is -500.
I am only able to charge when the tablet is off, although very slowly. I had it charging all night, and it is now at 60%
When I plug the pogo cable in, the tablet will say it is charging, but it really isnt doing anything.
Any ideas?

ab325 said:
I cant seem to solve this problem. I have tried using pogo and usb cables with two different chargers. I have also tried using different wall mounted phone chargers. I am not able to get any positive charge while the tablet is on. Using the battery monitor widget, I used to see a +1800 charge with the pogo, and a bit less with the usb cable. Now, the highest I get is -500.
I am only able to charge when the tablet is off, although very slowly. I had it charging all night, and it is now at 60%
When I plug the pogo cable in, the tablet will say it is charging, but it really isnt doing anything.
Any ideas?
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Recalibrate battery? It's probably not going to work though. RMA the tablet as a last resort.
Sent from my Galaxy Nexus using xda app-developers app

How can I recalibrate the battery?
Im in Europe until June, so Im assuming it wont be easy to RMA.

There is also a strange thing going on with the usb cable. My computer is unable to detect it as a storage device. When I plug the charger in, it will not show up as charging when the tablet is on. But, I am able to access the tablet via fastboot.

Where is that oficial pogo charger from samsgoogle? 4 month and counting... 2 Biggest companies în the world are unable to produce a simple cable... Hillarious
Sent from my Nexus 10 using xda app-developers app

The N10 charger is a 2 amp charger and most phone chargers are 1 amp chargers. The N10 will charge slowly with a 1 amp charger if it is powered off, however it needs 2 amps to run the N10 and charge at the same time. Also I have found that not all USB cables are created equal, you may want to try another usb cable. I do not know anything about the pogo chargers. Hope this helps.

S4 will not charge with AC charger; only USB

Last night I was charging my S4 in my car adapter, but noticed the cattery was still going down. I went home and plugged it into my AC (wall charger) and went to bed. The next morning the S4 was dead and couldn't charge. The only solution was to plug it in my computer and went an hour for it to get some charge back.
I have a root i337m running rootbox 4.1, and I went into TWRP to wiped the phone and installed the ROM again - no luck.
Is this a battery issue, a software issue or a whole device issue? Thanks.

freddywhite said:
Last night I was charging my S4 in my car adapter, but noticed the cattery was still going down. I went home and plugged it into my PC and went to bed. The next morning the S4 was dead and couldn't charge. The only solution was to plug it in my computer and went an hour for it to get some charge back.
I have a root i337m running rootbox 4.1, and I went into TWRP to wiped the phone and installed the ROM again - no luck.
Is this a battery issue, a software issue or a whole device issue? Thanks.
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Click to collapse
I don't think its a rom issue. I tried charging via USB as well and had phone charging a few hours and it ate crap. So I only charge via AC outlet only. USB charges but at a very slow pace.

Reinaldo33897 said:
I don't think its a rom issue. I tried charging via USB as well and had phone charging a few hours and it ate crap. So I only charge via AC outlet only. USB charges but at a very slow pace.
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I made an error in the OP - I meant to say I left it to charge on the wall and I got nothing.
Right now, the charge light doesn't even come on if I plug it with AC.

freddywhite said:
I made an error in the OP - I meant to say I left it to charge on the wall and I got nothing.
Right now, the charge light doesn't even come on if I plug it with AC.
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Maybe see the results by changing the charger you're using?

r8revealed said:
Maybe see the results by changing the charger you're using?
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I've tried 3-4 different chargers and cables, same issue. Charges slowly through PC,doesn't charge at all with AC. Did a factory reset after reverting to stock FW, no luck.

freddywhite said:
I've tried 3-4 different chargers and cables, same issue. Charges slowly through PC,doesn't charge at all with AC. Did a factory reset after reverting to stock FW, no luck.
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Click to collapse
I doubt it's a ROM issue, but there's no harm in reverting back to stock to see the results (assuming you've backed it up). If it all fails, i think you should unroot and send it to Samsung for the warranty. Software problems are somewhat easier to fix here than hardware, so it may be the best option to let Samsung handle it.

I had similar problems with my Note 2 before and now with my S4. What I found was, sometimes the usb cable wasn't tightly plugged into the wall charger. Once I've made sure of this, I've been able to charge (AC) every time.

I found this article that indicates that the S4 is looking for special sauce on the D+D- pins.
http://www.anandtech.com/show/6914/samsung-galaxy-s-4-review/2
Obviously the Galaxy S 4 will charge with any USB charger, but the charge time will simply be longer. Samsung uses a voltage divider and signals the presence of their own charger by sending 1.2-1.3 V across the D+ / D- pins, this is similar to what Apple does with 2.0 or 2.8 V across the pins for various USB chargers they've shipped over the years. This signaling is essentially Samsung's proprietary tablet charging signaling which they've employed on the Galaxy Note 2 and now SGS4, in fact the two use the same exact charger, so it's worth tossing out your old ones and getting the appropriate one to take advantage of the faster charging.
However I do not believe this to be 100% true. I think not all chargers will work..
I took a charger that is very vanilla (Wall charger but the D+D- pins are NC) and it works with the S3 and NEXUS7 but does not work with the S4.
This charger uses a stock USB cable so I took a wall charger that had gone bad but had a dedicated cable and hacked off the end and wired up my own cable...
That works! So it appears that the S4 will only charge properly with certain chargers that do something to the D+D- pins (either shorting them with a resistor like the article indicates
I then took a look at the cable I used to replace. It is a Motorola cable and it has the ID pin pulled high built into the cable... So I suspect that is required for the phone to work... But to fast charge it will need the special sauce indicated above!

Had the same issue and found the solutions which worked for me. Go into the developer mode and deactivate the usb debug mode.

Had the exact same issue. I took a soldering iron to my charging port on my phone. Problem solved. The ID pin had a bad joint.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app

I have a strange issue, my s4 is detected by pc, charges normally with usb ( wall or pc charge ) my battery is full but when I take the cable from microUSB port and s4 should work with the battery, turns off and consumes no battery, it's like refusing to use the battery and that it is full! battery checked on a sph l 720
I've tried installing other roms with safestrap but I still have the same problem, refuses to consume battery and while the battery is at 100% ,my s4 shows 0% if I disconnect the usb cable... game over. However, I can be on the safestrap menu for hours only with the battery, no problem, is a problem of rom I think but did not know how to fix it .. : (

I'm having the same issue as the original poster. The USB port is good, charges fine when connected to PC (although much slower because of different mVS). Have tried amidst everything and nothing fixes it. I've turned debugging mode off and back on, restore to backup, complete wipe and reinstall of 2 ROMs with and without apps, fix permissions, different kernels, different USB cables... The adaptor is in good condition. But when plugged in while on my phone doesn't recognize that's it's connected. Previously out would give a false charging reading. If off sometimes I got the grey bar battery but note is just vibrating every few seconds. Idk what to do...

crazy_dr0id said:
I'm having the same issue as the original poster. The USB port is good, charges fine when connected to PC (although much slower because of different mVS). Have tried amidst everything and nothing fixes it. I've turned debugging mode off and back on, restore to backup, complete wipe and reinstall of 2 ROMs with and without apps, fix permissions, different kernels, different USB cables... The adaptor is in good condition. But when plugged in while on my phone doesn't recognize that's it's connected. Previously out would give a false charging reading. If off sometimes I got the grey bar battery but note is just vibrating every few seconds. Idk what to do...
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I'd guess it's the charger. Get a new one
Sent from my Nexus 5 using XDA Free mobile app

I had the same problem. S4 will recognize charger as USB charger, not AC. solution was to clean usb port connector, was some cloth covering wires. then restarted and worked ok

I am having trouble charging the phone the same way. I have reset the phone 3 times and still can't get a charge.

[Q] Charge nexus 7 with dock?

Hello i want to know how long does the dock takes to charge the nexus 7. What %/hour does it take? i am having trouble charging my nexus7 because i think the micro usb port has become loose and the power cable wiggle a bit when plugged. I want to build a custom dock just to charge the nexus 7 via pogo pins. Apart from slow charging there is no other problem...I tried different ROMS and removed all apps to test if any app were eating juice more than expected

[Q] Urgent NEXUS 4 thinks it's in usb connection when it's plugged to charger.

I have rooted phone.
with clock work 6.0.4.7
Installed Android L Preview ROM for Nexus 4
Everything runs fine.
Problem/Error.
While on charge it is showing charging on USB even while connected to the socket it should be Charging normal/ Ac Charger/ charging.
disadvantages: device heating up. Charging slow.
Turning of the phone.
Charging while turned off, starts charging then it reboots into the recovery. after few seconds.
Please need help.
FIXED.
Flashed 4.4.4 Nexus 4 stock rom.
everything working fine.
Rooted and had nothing wrong with the recoveries or anything the Android L rom i flashed had issues. waiting for a fix.

try a different charger or chord, most likely its one of those items fault.

simms22 said:
try a different charger or chord, most likely its one of those items fault.
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Thanks for the reply bro.
Everything worked just fine before the root and the Rom installation. The charger and the chord works fine on other nexus 4. Used samsung s3 charger chord as well it detects it as "Charging via USB" not "Ac charger" and if i charfe after shutting down phone. It boots into the CMW it self after dew seconds and stays there. Device heating up both ways.

try a different charger. they go bad and often. if its not producing enough voltage, then the phone will see it as usb. itll see anything as usb if it doesnt provide enough volts/watts.

simms22 said:
try a different charger. they go bad and often. if its not producing enough voltage, then the phone will see it as usb. itll see anything as usb if it doesnt provide enough volts/watts.
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Did a reset from CMW now while turned on it detects as AC charger tho charging took long. Turn off it boots into the CMW recovery it self.

Me too, using the stock charger it will charge as USB; but when using car charger, it will charge as AC... stock ROM + kernel.... try different USB cable also same, I suspect is the charger having some problem...

s30ckf said:
Me too, using the stock charger it will charge as USB; but when using car charger, it will charge as AC... stock ROM + kernel.... try different USB cable also same, I suspect is the charger having some problem...
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Click to collapse
The official charger is known to have this issue, my Nexus 4 will charge sometimes as USB on the LG charger but always charges as AC when connected to the USB port on my Surface charger

FIXED.
Flashed 4.4.4 Nexus 4 stock rom.
everything working fine.
Rooted and had nothing wrong with the recoveries or anything the Android L rom i flashed had issues. waiting for a fix.

[Q] USB OTG + pogo charging

I've seen this question pop up a while ago but it doesn't appear to have been solved. Someone mentioned that the KTManta kernal might have solved this but I couldn't find that answered anywhere in that thread (here). I am using the USB OTG cable to control an IR Droid USB transmitter in a permanent kiosk installation and I need the pogo connector to supply power so this can run 24/7.
Any help is much appreciated!
UPDATE:
Wooo!!! Just thought I'd give the kernel a shot and see what happens... it works! I have a separate USB voltage meter that confirms, as well as seeing the battery % increase while being used, and my IR Droid is also working.
Just install the above mentioned kernel, plug in the USB Y OTG cable into tablet, external power supply to the male USB end of Y adapter, and external device (mine being the IR Droid device) to female USB end. Plug second power supply (I used the 2.4a (12w) iPad charger) into pogo connector. Win.
Ktoonsez, your next few beers are on me, good sir!!

UPDATE: The latest KTManta kernel (04-06-2014) breaks root (SuperSU) with the stock rom. In my case that is v4.4.4 so I've had to revert to my nandroid backup. The issue has been known for a long while but it seems the dev is prioritizing his kernel on other devices. Obviously this means I'll not be testing any time soon.
Interesting, I've wanted this solution for a long time as I use an USB Ethernet adapter from a room with poor WiFi reception. I'll see if it makes any difference if the OTG USB device is attached to a powered USB hub or not and report back.
Sent from my Nexus 10 using XDA Premium HD app

3DSammy said:
UPDATE: The latest KTManta kernel (04-06-2014) breaks root (SuperSU) with the stock rom. In my case that is v4.4.4 so I've had to revert to my nandroid backup. The issue has been known for a long while but it seems the dev is prioritizing his kernel on other devices. Obviously this means I'll not be testing any time soon.
Interesting, I've wanted this solution for a long time as I use an USB Ethernet adapter from a room with poor WiFi reception. I'll see if it makes any difference if the OTG USB device is attached to a powered USB hub or not and report back.
Sent from my Nexus 10 using XDA Premium HD app
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Oh man, I wish I knew about it breaking root before installing!! I was wondering why it was saying I wasn't rooted... Is there a way to fix root while on this kernel?
I'm having some issues with the tablets now that I didn't have before - the most basic seems that it won't boot (won't even start the Google logo) if I have both OTG device and Pogo connected at same time when the tablet is off. I did solder my own right angle tip onto the OTG Y cable though, so I may have messed something up... I'm going to be doing some more testing over the next couple days and I'll keep this up to date.

"Is there a way to fix root while on this kernel?"
The root issue with KTManta's latest release is specifically with the stock ROM from what I've read in the N10 KTManta thread. So it would seem that installing a non-stock ROM then installing the KTManta kernel would be the only way to get this kernel and root. I'm unwilling to do that for this single feature. There were comments that root was still working on an older KTManta release which if I can remember is from Dec 2013. I've no idea if that release has the charging features you see with the latest release.
If you go the custom ROM route then read the KTManta thread to find out which custom ROM's are working. Don't quote me but I thought the OMNI ROM was one that worked, please confirm that for yourself.
From my experience stock with the XPosed framework is more stable than any custom ROM and I've tried many.
Sent from my Nexus 10 using XDA Premium HD app

So there were a few other issues that I found out while testing...
If you have USB plugged in, then reboot, the tablet freezes while trying to boot. It doesn't even get to the loading screen.
It seems a bit buggy as to when it wants to work and when it doesn't, and all the while the tablet says that it's charging so it is hard to test, but I was using a USB volt meter to see if the pogo was actually taking power or not.

The next thing I want to test is using a powered USB hub, instead of a Y cable. Has anybody done this successfully? Does it need the modified kernel? Does it ACTUALLY charge, or just say that it is?

SupremeTaco said:
The next thing I want to test is using a powered USB hub, instead of a Y cable. Has anybody done this successfully? Does it need the modified kernel? Does it ACTUALLY charge, or just say that it is?
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I use a powered hub to access an Ethernet adapter while concurrently having the pogo plug attached. The result is that the tablet drains slower as the Ethernet adapter is drawing power from USB Hub rather than the tablet. The tablet does not get charged in anyway despite the false charging icon indicator. This is why your post was so interesting to me until I discovered that root was lost. I can live the charging and OTG limitations but I can't loose root.
Sent from my Nexus 10 using XDA Premium HD app

I tried this the same way as SupremeTaco described.
My nexus 10 runs the latest Omnirom 4.4.4 with latest KTManta kernel.
I plugged in the OTG Y Cable, which was connected to a charger and a usb SD-card reader. Then I plugged in the Pogo charger and to my surprise, the Nexus 10 charges yay! (I saw the battery percentage increase as I was using device with screen on)
SupremeTaco thank you for this great tip, I have been looking for a solution for a long time. I can now charge my Nexus 10 16GB while using a Meenova reader with 64GB microSD card - which is extremely useful :good: :good:

xIsei said:
I tried this the same way as SupremeTaco described.
My nexus 10 runs the latest Omnirom 4.4.4 with latest KTManta kernel.
I plugged in the OTG Y Cable, which was connected to a charger and a usb SD-card reader. Then I plugged in the Pogo charger and to my surprise, the Nexus 10 charges yay! (I saw the battery percentage increase as I was using device with screen on)
SupremeTaco thank you for this great tip, I have been looking for a solution for a long time. I can now charge my Nexus 10 16GB while using a Meenova reader with 64GB microSD card - which is extremely useful :good: :good:
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I'm glad it helped! But be careful as you may have issues booting with the USB plugged in. Let me know if this does happen to you... it may just be the version of the kernel I was using but I gave up and am looking for another solution at this point, since I must leave the USB plugged in 24/7

Pogo works great
Should have bought one earliar

Pogo works great
Should have bought one earliar

SupremeTaco said:
I'm glad it helped! But be careful as you may have issues booting with the USB plugged in. Let me know if this does happen to you... it may just be the version of the kernel I was using but I gave up and am looking for another solution at this point, since I must leave the USB plugged in 24/7
Click to expand...
Click to collapse
Sorry for the slow response,
I did some testing with both KTManta kernel and the stock Omnirom kernel and indeed booting with USB plugged in does not work. The culprit seems to be the OTG Y-Cable and specifically the power supply part. If you disconnect power from the Y cable but leave everything else plugged into the tablet, the tablet will boot. Perhaps you could have a power switch for the Y-cable and switch it off only when booting?
Also, I have discovered that Pogo charging with Y-cable also works on stock Omnirom kernel. So it seems that the kernel does not affect the charging capability with this setup in anyway, so we are not limited to using KTManta. However the booting issue does not seem to be a kernel-related problem.
Edit: I also confirmed charging in this way works with franco kernel r16 (so it will probably work with all other franco kernels and any other custom kernel)