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[Q] Nexus 7 does not charge while on.

My Nexus 7 is no longer charging while turned on. If I power it off it'll charge with the battery symbol. I can't even get my PC to recognize it while plugged in to USB. I'm using the stock charger and cable. Any thoughts?
I'm currently running Paranoid Android 2.54, however when this started I was on 2.50. I thought flashing a newer version might help.

Not charging
Plus 1 on this issue,
Running stock ROM and it updated yesterday to version JOP40C now it's only charging when turned off.

+1, same here, but now it won't charge as the battery got completly drained.

Still does not charge. This is a launch N7, curious if Google will replace it.
Sent from my Nexus 4 using xda app-developers app

I just received a replacement seven this week for the same issue, mine stopped charging. I called google play customer service, and they didn't give me a hastle at all.

Were you rooted/running a custom ROM? I am, and with my N7 not getting recognized I feel like flashing back to stock might be problematic.
Sent from my Nexus 4 using xda app-developers app

darksonic said:
Were you rooted/running a custom ROM? I am, and with my N7 not getting recognized I feel like flashing back to stock might be problematic.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
yea, rooted, custom ROM and kernel. doesn't matter though, it just started one day randomly. I finally did get it to charge BTW, by giving it a few firm smacks on the back. they didn't even ask if it was with root or if it was a custom ROM. if its hardware related, it won't make a difference. i sent it back with twrp recovery, rasbean jelly rom, and trinity kernel. i did wipe the data and the storage before i sent it in.

Yeah my Nexus' charging is messed up since 4.2. Battery seems to run down extremely quickly (around 30% in two hours with Spotify on and general browsing.) Plugging it into the wall with the official charger sometimes charges it EXTREMELY slowly, and sometimes just says its charges and still the battery is running down.
It happened to charge last night, and over the course of around 10 hours, I think I had 60% battery. Trying to charge now, and nothing, just losing battery. No idea what the issue could be. Tablet completely stock.
Sent from my Nexus 7 using xda app-developers app

+1 on this issue. N7 isn't charging when turned on, no charging issues if turned off. It isn't recognized when connected to a PC. Whenever I try switching users, the darn thing restarts itself. It does the same thing when I try USB debugging. I am running 4.2.1.
Please help!

Investigated problem
After upgrading to 4.2.1 my N7 charged very slowly. Finally today I decided to investigate it, albeit inaccurately.
Plugging a 2A charger into my 120V power monitor, I noticed the following:
When the N7 was on, the power draw continually alternated between 0 watts and 2 watts.
When the N7 had been shut down from the bootloader (not from the OS) and the cable plugged in/out, the power draw was a constant 2 watts.
The max charging rate of the N7 is around 10 watts.
So it looks like the N7 is will charge either very slowly, or kind of slowly. What I find strange is that this issue only occurs on some devices. Perhaps later devices use a different charging controller?
Either way, would really like a fix for this.

__Adam said:
After upgrading to 4.2.1 my N7 charged very slowly. Finally today I decided to investigate it, albeit inaccurately.
Plugging a 2A charger into my 120V power monitor, I noticed the following:
When the N7 was on, the power draw continually alternated between 0 watts and 2 watts.
When the N7 had been shut down from the bootloader (not from the OS) and the cable plugged in/out, the power draw was a constant 2 watts.
The max charging rate of the N7 is around 10 watts.
So it looks like the N7 is will charge either very slowly, or kind of slowly. What I find strange is that this issue only occurs on some devices. Perhaps later devices use a different charging controller?
Either way, would really like a fix for this.
Click to expand...
Click to collapse
From the way you described your test setup, you seem to be measuring the power consumed by the charger itself on a 120 VAC source. The wattage there should be low, albeit still higher than what you're seeing. Along that line, if you ever see it go up anywhere near 10 watts, then something has gone horribly wrong.
Also, the slow charging seems to be peculiar to 4.2 and above, indicating that it is not actually a hardware issue.

same!
Been having the same problem for a few days now, I was on stock 4.2 and updated today to a custom ROM based off of 4.2.1 and there is still no difference. Anyone found a solution yet?? Its quite concerning especially since I got mine from GameStop in the US then moved to the UK shortly after!
Just wanted to add, before this started I was having the same problem that is talked about here http://forums.androidcentral.com/google-nexus-7-tablet-forum/228706-nexus-7-problem-wont-charge-when-does-screen-goes-dead-pixels-fly-across-screen.html
I figured it was caused by letting the battery drain completely so I opened it up pulled the battery plug out, plugged it back in and charged it till it was full and it continued to work. haven't let it die since.

Same problem here, stock Nexus 7 running 4.2.1, roughly 2 months old.
It charges when the device is turned off, but will not charge when powered on -- started happening about 2 weeks ago (charged fine previously). This is using the stock brick and cable that came with the tablet.
I have to imagine that this is a software issue and that the next one will have a similar problem -- has anyone else swapped one out and had the problem disappear with the new one?
dave

[Q] Nexus 7 will not charge

my nexus7 will not charge until it has completely drained....
I am aware of the current battery problems, but mine is a bit different....
Even after going to bootloader and choosing power off my nexus will sit on charge (wall) overnight and be dead in the morning, even though it was at 30% when plugged in....
The only way to charge it seems to be off my laptop. but even then it takes over a full day to charge.
If i hook up to laptop while runing it basically only slows down the drain but still doesn't charge up....
this is very frustrating, and i'm at my ropes end
would dowgrading to an older rom take care of this issue?

whasty said:
my nexus7 will not charge until it has completely drained....
I am aware of the current battery problems, but mine is a bit different....
Even after going to bootloader and choosing power off my nexus will sit on charge (wall) overnight and be dead in the morning, even though it was at 30% when plugged in....
The only way to charge it seems to be off my laptop. but even then it takes over a full day to charge.
If i hook up to laptop while runing it basically only slows down the drain but still doesn't charge up....
this is very frustrating, and i'm at my ropes end
would dowgrading to an older rom take care of this issue?
Click to expand...
Click to collapse
No solution, I'm afraid, I'm chiming in to say that I have also been having problems since the same time. For two days, I have been trying different combos of chargers, cables, and outlets, to see if other equipment is the problem. But all of it works fine with my Nexus 4. Mostly, I am experiencing that the unit says "charging" but the battery level is going down instead of up. I managed to get a full charge overnight by using an external battery that I got just for this type of emergency backup. After use, it is back down. This morning, third cable I tried finally seems to be working, for now. In 40 minutes it went from 63% to 65%. I am somewhat relieved but this situation is not normal.
I'm going to start reading through the forum to try some suggestions. I wasn't paying attention to updates. Has this problem been triggered by a recent update?
I understand some suggestions call for letting the battery discharge entirely. It seems that won't be hard to do. I can leave it plugged in and, as happened with most of the cables I tried, the battery level will go down to zero pretty fast. I'm really annoyed, but very happy right now that I splurged on an external battery.

Have you tried a new charging block... That would more that likely be your culprit.
Sent from my SPH-D710 using xda premium

I have used 4 blocks
Unless the tablet is killing the charger it is certainly the tab
Sent from my Nexus 7 using Tapatalk HD

whasty said:
I have used 4 blocks
Unless the tablet is killing the charger it is certainly the tab
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
Check your port for bent pins.
Sent from my Nexus 7 using xda premium

I used three different chargers plus the external battery. Two of the chargers have two inputs (i.e., for Apple and non-Apple products). I have five different charging cords, longest is 6 ft and the others much shorter (two are from Monoprice), and one retractable I usually use in the car. I tried every combination I could think of between chargers, cables, input ports, and several different electrical outlets at two locations.
All the various combos functioned fine with my Nexus 4, the other device I have with me. None of them worked with the Nexus 7. All showed as "charging", but they weren't. In some cases, the numbers were going down quote rapidly. Goes without saying, when you're charging, it shouldn't go from 64% to 59%.
The thing that finally worked - with no hiccups - was the external battery. Since everything worked on the Nexus 4, it's quite apparent the problem is the Nexus 7.
Having said that, by this morning, things inexplicably changed for the better. With the device at around 70%, I connected one of the chargers and it functioned normally. Battery filled up within the normal timeframe. I was using it intermittently while charging, as I often do.
I'm glad it's working and very glad I have the external battery that can fill up both the Nexus 4 and Nexus 7 in a pinch. But I still think there's something wrong with the Nexus 7, and I'm not knowledgeable enough to dare try some of the more technical suggestions. Just the term "shorting out the pins" is enough to warn me that I'm not expert enugh to try anything like that. For now it works, I hope it lasts like that until perhaps I can understand the issues a little better.

I'm having the exact same issue as you guys and it has me stumped. On some days it'll work, others it wouldn't. At first I thought I could fix it by rebooting but last night mine just drained all the way down overnight while charging from around 50% and this morning I wasn't having much luck getting it charged using the 2 stock Nexus 7 wall chargers that I have. I'll try using an external that I got recently and hopefully that'll solve the issue for now at least.
Edit: Some people have had luck reversing the polarity on their charging block. I'll give that a go and report back whether it worked for me or not.
Edit/Update: Yup, flipped my brick around so that the big end sticks off the left side and it's at 32% now from 0% after 2.5 hours. You guys might have some luck with this too.

Nexus 7 fails to charge
We have two Nexus 7 in the house, one 11 months the other 6 months old.* The older one stopped charging just before our holiday last month so we took the other. It stopped charging while we were away.* Fortunately my wife had here Samsung Ace [mains] phone charger with her. This worked every time.*
Once home I checked the two Nexus 7 mains units and 2 Nexus 7 usb cables. No combination would charge either Nexus 7.* The Samsung mains charger would always charge both Nexus 7.
Solution:* Suspicious, I ordered an Asus Nexus 7 cradle while we were away. Any combination of Nexus 7 mains unit and usb cable charges both Nexus 7s on the cradle.
Conclusion: The USB socket on the Nexus 7 cannot take repeated insertion and removal of the cable.
Hope this may help somebody.

Yea I had the EXACT same story as you. I had for got to take my nexus 7 charger on holiday but I had my Samsung galaxy ace (s5830i) charger so I used that. when I came back and pluged In my charger It said that It wasn't charging so I used my brothers nexus 7 charger but still no good. It said that my brothers nexus 7 was charging but not mine and than I figured out what I had damaged... My nexus 7 charging port. I had proved this by comparing the the 2 charges and they where very different... Luckly It was still under warranty so I took it to (I cant tell you that). I looked all innocent and pretended I was new to this stuff and they then tried to charge it but no use so they replaced it with a new one but now I know not to put different chargers in my new nexus 7 and that goes to people out there as well
Sent from my Nexus 7 using xda app-developers app

[Q] Nexus 4 Charger Faulty- What do I do?

Hi I recently bought a Nexus 4 16GB from Google Play in the UK. It's been working fine but in the last few days when I connect my phone with the official charger (the one that came in the box) the touchscreen begins to act weird and buggy. More specifically it becomes less sensitive and doesn't function properly. I can scroll down on the app drawer with no problem but scrolling up is extremely slow- its like its scrolling through syrup, same on homescreen. Thinking this was an app or kernel problem I removed an app I thought was causing the issue and reverted kernel back to normal but the problem persists. I now think it may have something to do with the charger being faulty as I am now charging my Nexus 4 with the charger that came with my Nexus 7 and no problems with touchscreen responsiveness or interaction.
Has anyone else had issues with this? as I've seen people have trouble with non standard chargers but I'm using the official one.
Would Google be able to exchange just the charger and not the whole phone package? And is it okay to use my Nexus 7 charger for my Nexus 4?

randomvector said:
Hi I recently bought a Nexus 4 16GB from Google Play in the UK. It's been working fine but in the last few days when I connect my phone with the official charger (the one that came in the box) the touchscreen begins to act weird and buggy. More specifically it becomes less sensitive and doesn't function properly. I can scroll down on the app drawer with no problem but scrolling up is extremely slow- its like its scrolling through syrup, same on homescreen. Thinking this was an app or kernel problem I removed an app I thought was causing the issue and reverted kernel back to normal but the problem persists. I now think it may have something to do with the charger being faulty as I am now charging my Nexus 4 with the charger that came with my Nexus 7 and no problems with touchscreen responsiveness or interaction.
Has anyone else had issues with this? as I've seen people have trouble with non standard chargers but I'm using the official one.
Would Google be able to exchange just the charger and not the whole phone package? And is it okay to use my Nexus 7 charger for my Nexus 4?
Click to expand...
Click to collapse
Yes you can use the Nexus 7 charger. In fact, you can use any Micro usb charger cable to charge your phone. The phone will take in the amount of power it needs. It shouldn't be an issue.

Anyone know what could be causing the touch screen issues when charging. That's what confuses me the most. Could it have something to do with the charger heating up or being faulty?
Thanks for the tip about using my Nexus 7 charger instead.
Sent from my Nexus 4 using Tapatalk 2

I know that with some of my older phones, when charging from an inverter that did not stabilize it's output voltage, my touchscreen would do the described. Maybe the charger fluctuates in voltage slightly... This was on my old iPhone 3GS, I can't remember if my Atrix did it... It might not do that on the Nexus

lopezk38 said:
I know that with some of my older phones, when charging from an inverter that did not stabilize it's output voltage, my touchscreen would do the described. Maybe the charger fluctuates in voltage slightly... This was on my old iPhone 3GS, I can't remember if my Atrix did it... It might not do that on the Nexus
Click to expand...
Click to collapse
I checked my outlet and tried on other outlets and the current going through is fine.

randomvector said:
I checked my outlet and tried on other outlets and the current going through is fine.
Click to expand...
Click to collapse
It would probably be something with the charger output then. Maybe it has to do with amperage output rather then voltage, I know that some people had issues with the stock charger outputing less amperage sometimes making the phone drop to USB mode. IMO the stock charger kinda sucks and its better to just buy another charger and keep the stock one for backup or something

[Q] Nex4 shows [USB] charging on all chargers

PROBLEM SOLVED
for some reason my new nexus 4 charges on USB mode no matter what charger i use, now here is the weird part...
i have 2 motherboards, one from a previous nexus 4 and when i drop the motherboard into the phone without changing usb port or anything, it will show it is charging on AC for the proper chargers (Wall chargers).
can the motherboard really control the charging rate? i thought it would be a usb port problem, but nope, works fine on my older motherboard which has Carbon 4.3.1 , my newer one is running Carbon 4.4 , ill try to make a nandroid and flash another rom to check if its just rom (which wouldnt make much sense but whatevs).
any input, tips, or advice would be awesome
btw, im using the default battery option in the settings app to check if it is USB or AC , so if anyone knows any apps to confirm rate that would be cool too
UPDATE: tried CM 11, yep it was my rom (carbon 4.4) and or kernel (Faux U31), i wonder why though

SneakyGuyDavid said:
for some reason my new nexus 4 charges on USB mode no matter what charger i use, now here is the weird part...
i have 2 motherboards, one from a previous nexus 4 and when i drop the motherboard into the phone without changing usb port or anything, it will show it is charging on AC for the proper chargers (Wall chargers).
can the motherboard really control the charging rate? i thought it would be a usb port problem, but nope, works fine on my older motherboard which has Carbon 4.3.1 , my newer one is running Carbon 4.4 , ill try to make a nandroid and flash another rom to check if its just rom (which wouldnt make much sense but whatevs).
any input, tips, or advice would be awesome
btw, im using the default battery option in the settings app to check if it is USB or AC , so if anyone knows any apps to confirm rate that would be cool too
Click to expand...
Click to collapse
+1 I get that all the time and I use the default nexus 4 charger they came with it. I have to enable force fast charge a lot of times
Sent from my Nexus 4 using Tapatalk

Zehlek said:
+1 I get that all the time and I use the default nexus 4 charger they came with it. I have to enable force fast charge a lot of times
Sent from my Nexus 4 using Tapatalk
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Click to collapse
yeah i've tried enabling fastcharge on faux but it doesnt seem to do anything really, something's probably up with carbon 4.4 its still new and the carbon team's server is down right now so there wont be new builds till atleast this weekend, i guess i can suck it up intill i figure out my problem its only charging which normally i only do while i sleep, if i switch to any other rom it has to be feature filled like carbon, carbon basically has a little bit of everything (before 4.4 update which broke compatibilty) thats why i like it.
EDIT: Redownloaded Carbon 4.4 (latest nightlty is 2/5/14 as of now) and i Didn't flash faux and AC works perfect... im slowly but surely solving my own problem, im gonna redownload faux and see if that is what is causing the USB speed chatting
Update: found the solution to my problem, it was faux kernel, but in the sense that if you leave fast charging on FORCE AC it won't do ****, it will actually then make everything charge at USB speed, so put it on disabled like I needed to do.

Mh but i had the same problem, but on stock!
It turned out that my ac to usb adapter was like too weak for the phone or whatever, amyways if i use the adapter of my panasonic digicam, it works just fine
---------------------------------
Phone : My new Nexus 4!
OS:
Pure KitKat 4.4.2 stock, no root, no mods (but only for the first time ;D)
---------------------------------
Gesendet von Tapatalk

I need help fixing my Nexus 7

I suspect it is most likely the micro USB or the battery as my Android won't charge anymore. I saw a video on how to fix this but I don't have the part or know where to find it. My device is a Nexus 7 ASUS. If the micro USB isn't the issue than I don't know what is wrong or why my Android won't charge anymore.

MASF123 said:
I suspect it is most likely the micro USB or the battery as my Android won't charge anymore. I saw a video on how to fix this but I don't have the part or know where to find it. My device is a Nexus 7 ASUS. If the micro USB isn't the issue than I don't know what is wrong or why my Android won't charge anymore.
Click to expand...
Click to collapse
Hi, MASF123...
It might not be the Nexus 7 itself, the problem might lie at the charger end.
I had a similar problem several months ago, where my Nexus 7 either wouldn't charge at all, or it would charge erratically, and thus taking hours to fully charge up.
It turned out that the fault was a loose USB socket in the official Nexus 7 charger that originally shipped with my device.
Anyhow, I started to use a spare Amazon Kindle charger that I happened to have lying around, and my Nexus 7 has charged without problems ever since. It's rated slightly lower (1.8 amp's) than the official N7 charger (2.0 amp's), but it gets the job done.
So it might be worth trying another charger, perhaps from another device, before you start tinkering with the Nexus 7 itself.
Hope this helps, and good luck.
Rgrds,
Ged.

GedBlake said:
Hi, MASF123...
It might not be the Nexus 7 itself, the problem might lie at the charger end.
I had a similar problem several months ago, where my Nexus 7 either wouldn't charge at all, or it would charge erratically, and thus taking hours to fully charge up.
It turned out that the fault was a loose USB socket in the official Nexus 7 charger that originally shipped with my device.
Anyhow, I started to use a spare Amazon Kindle charger that I happened to have lying around, and my Nexus 7 has charged without problems ever since. It's rated slightly lower (1.8 amp's) than the official N7 charger (2.0 amp's), but it gets the job done.
So it might be worth trying another charger, perhaps from another device, before you start tinkering with the Nexus 7 itself.
Hope this helps, and good luck.
Rgrds,
Ged.
Click to expand...
Click to collapse
No that is not the case because I bought a new USB cord and power supply to make sure before I opened it up. It stopped charging even with the new charger I bought.