[Q] Nexus 7 will not charge - Nexus 7 Q&A, Help & Troubleshooting

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

Related

why wont my nexus 7 8GB charge?

my nexus 7 tablet just wont charge, im using the stock plug and usb cable provided with the nexus 7. It it on and says charging but battery percentage doesnt increase. As of now, it is on 0% and has been for the past 5 hours. I've also tried other usb cables and a motorola milestone charger/cable and still no luck, please help me.
thanks
I had the same problem. Check the charging unit and make sure the two sections have clicked together.
BPSomerset said:
I had the same problem. Check the charging unit and make sure the two sections have clicked together.
Click to expand...
Click to collapse
thanks for the info, yep its in there and clicked together, still not charging properly, i think its a dead battery issue
Have you tried using a different charger or tried charging through your PC to eliminate potential problems with the plug and cable? Just a thought.
Sent from my GT-I9300 using Tapatalk 2
Try to jiggle the cable in certain directions such as up down left right and see if it starts to charge. If it doesn't, return the sucker.
Sent from my Nexus 7 using xda premium
I have found the N7 is picky with cables' the default one that comes with it works fine but doesn't seem to want to charge through my car charger.
My epic4g cable doesn't work and neither do any of my other USB cables.
Same with the charger, it has to have a dedicated live connection and no USB splitters with multiple ports.
I need like a good 4-5' USB cable to use tablet comfortably while charging.
Sent from my Nexus 7 using xda premium
I'm using a white 5ft cable I bought f/Amazon for my kindle fire.
ASIN: B006BGZJJ4. Item model # 53-000156
Works great on the Nexus 7 as well.
Sent from my Nexus 7 using xda app-developers app
I got a six foot mediabridge cable from Amazon, very sturdy and works fine.
Sent from my LG-P999 using xda app-developers app
I am now having similar problem on 16gig. It will not charge from the power adapter at all, but will charge from a PC using same cable.
Same behavior on my alternate cable that I use for phone.
spongaweb said:
I have found the N7 is picky with cables' the default one that comes with it works fine but doesn't seem to want to charge through my car charger.
My epic4g cable doesn't work and neither do any of my other USB cables.
Same with the charger, it has to have a dedicated live connection and no USB splitters with multiple ports.
I need like a good 4-5' USB cable to use tablet comfortably while charging.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
My car charger doesn't work either but my computer/tv/printer/tivo/wall/everything else works just fine... it must be a voltage issue with the car charger.
I remember reading that the charging issue some of you guys r having is a confirmed hardware problem, due to poor quality control. Asus was in such a rush to get the first few batches out that certain faults made it into a select number of batches. Other people who have had this hardware problem either could only use the Asus adapter, or that might not even work. You should try to get it replaced by your seller. I'll post the source in the morning if everyone's too lazy to Google.
Cheers
possible fix
I've read on other forums that it is the usb port. I my experience it is a intermittent connectivity or the wall wort isn't putting out enough amps. I bought an iGo Green for the iPad, put the tablet in Airplane mode and it will work fine while using it. Last night I shut it all the way down, let it charge overnight and woke up with a full battery.
Seems like only high output chargers work. All my 2.1A chargers work with Nexus 7, but lower output ones do not charge even when Nexus 7 says it's charging.
Sent from my Nexus 7 using xda premium
None of my 2.1a chargers work.
Sent from my Nexus 7
Just for the hell of it...... pry the back cover off and make sure the battery is firmly plugged in. This happened to mine and now all is good
Sent from my Galaxy Nexus using Tapatalk 2
My 8GB arrived Monday , 1/2 charged pluged in to the 2A charger it says its charging but the battery just drops. Turned off and left overnight and its still no more than 20% charged.
I need to find an app that shows charging
check output of charger, check cables, check charge on phone vs tab then send back to Google for a replacement grrrr
I have the same problem, how do I fix? I have the 16 gb version.
The N7 seems to be having a lot of problems with charging. A couple times when my battery has been completely dead, I have had a tough time getting it to begin the charging process. One time I watched it begin to charge, then boot up, stay on for about 20 seconds, turn off, and then not charge. I have no idea what's going on. I always eventually get it to work, but something doesn't seem right.
Remedy
Google Play telephone support had be factory reset my Nexus 7 8GB. After the reset, the battery began charging. A major nuisance having to redownload everything, but it does work. Good luck
spongaweb said:
I have found the N7 is picky with cables' the default one that comes with it works fine but doesn't seem to want to charge through my car charger.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1823377

My Nexus 7 literally takes hours to charge

My Nexus 7 battery takes forever to charge. And this is even when I use my stock cable to the wall charger. I know it takes around 3-4 hours to charge it from dead to full but for some reason mine is only HALFWAY full at the 4 hour mark and I usually have to leave it on the charger the whole night/day for it to be fully charged.
I have no other defects on this product except for this one. And I never dropped it or anything and I'm currently running 4.1.2.
Please help. I know I can't be the only one with this problem.
Definitely use the oem charger (2 Amp compared to 500-850 ma for most) and the supplied USB-3 cable. It will charge faster. After the long initial charge up to 100% mine has been charging pretty well. If I'm down around 10% it can take up to 4 hrs to charge, but the battery is huge compared to most phones. It sounds like something isn't working normally for you. Have you tried turning it off, then charging?
Yes sorry I was unclear in the original post. I'm using everything stock when I charge my Nexus 7. I don't use any other cable. And yes I completely turn it off when I'm charging but yet it still charges horribly slow.
I would test another comparable charger just to make sure it's not the charger or cable itself.
There is a lot of threads that talk about the charger and the possible ones you can & can't use (Nexus 7 is picky). I use a HP Touchpad USB plug and a cable. It does the job well :good:
Saturny said:
There is a lot of threads that talk about the charger and the possible ones you can & can't use (Nexus 7 is picky). I use a HP Touchpad USB plug and a cable. It does the job well :good:
Click to expand...
Click to collapse
+1
I use the HP touchpad charger, Playbook charger and KFHD charger. All three of those get the job done fast.
With those three, I don't even need to use the N7 charger lol
Sent from my Nexus 7 using xda app-developers app
Do you keep it on while you're charging it? If so that will definitely make it take longer to charge since it's using power.
Nope.
brando56894 said:
Do you keep it on while you're charging it? If so that will definitely make it take longer to charge since it's using power.
Click to expand...
Click to collapse
I keep mine on, so I can check the % on screen. And long as you don't use it while it's charging, it won't take longer.
Trust me I keep everything that I charge off so that it can charge faster and not be using any power while charging. It seems no one else has gone through this from this thread though. It sucks that I have to get a new charger when the stock charger should be still working fine and perfectly.
As far as i have read the informations on / in box. It said to use the OEM charger only. I didn't really measure time when charging, but it always took maybe 2-3 hours max to charge the device completely.
Try blowing out your micro port with compressed air, had this on my galaxy2
Sent from my Nexus 7 using xda premium
I use a Samsung charger with the usb cord, i for a USA charger.. Mine also uses hours... Good to know IT Will charge netter with others
Thnx
Sent from my Nexus 7 using xda app-developers app

[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

Charging your Nexus 4 with an iPhone wallplug?

I've had the Nexus 4 for about 2 months now and it's really the best phone I've ever owned. But switching from an iPhone 4S, I can't help but realize how long charging takes. It's about 2 hours to a complete charge on an iPhone and almost 4 hours on a Nexus 4. I know the Nexus 4 has a battery that's a third bigger, but it shouldn't mean that it will take twice as long to charge.
I still have my iPhone wall plug lying around. Has anyone been brave enough to combine their Nexus 4 USB cable with an iPhone wall plug to see if it would charge faster? Or is there any charger that'll speed up the process (Samsung or HTC)? I haven't tried it yet I know Google and LG advise against using other chargers but I think it's worth a try especially if I need a quick charge before I go somewhere.
Side note: Previously, I did charge my iPhone using a iPad charger connected to a MacBook Pro extension. It would fully charge in about 90 minutes which was 30 minutes quick than usual and I did it often for almost a year without any problems.
Doesn't the iPhone wall charger have a rating of 1 Amp? The N4 charger has a higher rating of 1.2 Amps. Check and see.
Yeah, I've read that somewhere. But like always, numbers don't always reflect world world performance.
My N4's at full charge right now but I might give it a go tonight when it's empty. If anything, I would just expect the N4 to detect it as a USB source instead of an AC source.
rolemodel4kids said:
Yeah, I've read that somewhere. But like always, numbers don't always reflect world world performance.
My N4's at full charge right now but I might give it a go tonight when it's empty. If anything, I would just expect the N4 to detect it as a USB source instead of an AC source.
Click to expand...
Click to collapse
It'll charge. That's not an issue. I'm just thinking it won't be any faster.
I've plugged my nexus into an iphone plug every day since I got it back in December (it takes up less space). The phone is fine, however, I wouldn't have a clue is it's faster or slower to load.
How long would you say it takes you to completely charge from 10% battery?
Yeah ive noticed it takes longer to charge then an iphone but im not to fussed.
I wouldn't do it... your phone might turn into an iPhone
I've been charging with iPhone charger and had no dramas either.
Any electrical appliance will try draw what it needs regardless of what's powering it.
eg. It's supply and demand - you've got a tap designed to fill a 2 litre bucket of water in 4 hrs filling a 3 litre bucket.
If you want good charge times grab a 10 watt/ 2amp charger.
But there isn't a problem with what you've got if the time issue isn't a factor for you.
Sent from my Nexus 4 using xda premium
The N4 only pulls about 700-800mA max. So a 1A charger is more than enough. But as has been said, it won't make it charge any faster unless there is something wrong with your stock charger.
Sent from my Nexus 4
Install Elixir and charge your device with iphone charger and then stock charger. In elixir you can see at what rate your battery charges(mA). compare both and you be the judge of it.
Peace.
4 hours? I'm lucky if mine takes 2. It only takes 4 on the cheap wireless charger I have.
Sent from my Nexus 4 using xda app-developers app
rolemodel4kids said:
Has anyone been brave enough to combine their Nexus 4 USB cable with an iPhone wall plug
Click to expand...
Click to collapse
I've always wondered, why do people get so concerned about using different wall plugs? Surely it's the phone that controls how fast it charges and how much it takes in? My family has 4 different ones (LG/Nexus, HTC, Samsung and iPad) and I've just used whichever one was free without issues. Please correct me if I'm wrong but I've just never actually worried about this and it worries me that so many people worry about it
Anyway to see which charges fastest use something like CurrentWidget which displays battery drain and charge in mA.
Nigeldg said:
I've always wondered, why do people get so concerned about using different wall plugs? Surely it's the phone that controls how fast it charges and how much it takes in?
Click to expand...
Click to collapse
Yes, exactly.
Sent from my Nexus 4
I tried it out. Makes no difference at all.
Actually, it might be a little slower than the LG charger.
the service manual states 950mah to 90% then uses tickle charge, i use my sony camera charger at 1.5amps since its smaller, it takes like 2.30 hours to charge,
Nigeldg said:
I've always wondered, why do people get so concerned about using different wall plugs? Surely it's the phone that controls how fast it charges and how much it takes in? My family has 4 different ones (LG/Nexus, HTC, Samsung and iPad) and I've just used whichever one was free without issues. Please correct me if I'm wrong but I've just never actually worried about this and it worries me that so many people worry about it
Anyway to see which charges fastest use something like CurrentWidget which displays battery drain and charge in mA.
Click to expand...
Click to collapse
You are right, no worries with any usb charger. I've been charging my phone (N1, NS, GN, N4, Note 2) all using my old Sony Ericsson 700mA charger without any problem. Plug in before I go to sleep, then next morning it's full. Ready for whole day usage. Have been doing that for ages.
The iDevice chargers actually cut their output when charging a non iDevice. If you plug your phone in, sometimes you'll see Charging - USB instead of Charging - AC
I use my ipad charger, no issues but obviously I can't give input on charge time.
I stayed away from the stock charger since so many people had problems with it.
What about getting a higher amp wall plug say 2.1 amp at 5 watts and using FAST CHARGE?
Sent from my Nexus 4 using xda app-developers app

Nexus 7 SLOW CHARGING

Hi my nexus 7 is charging at a pathetic rate . I left it to charge for 5 hours from 7.00am to 12.00pm and it only charged from 5% to 12% .
It all happened a few days ago . I charged my nexus 7 to 100% (stock rom used for few months alr )and wiped the battery stats . Following that I drained the battery till 0% . After rebooting , the slow charging problem surfaced . I have already did a clean wipe and reinstall of stock 4.1.2 using nexus toolkit , the problem is still there . Help ?
in my country it happened to many people. you should take the nexus to ASUS reparing service and ask them to replace the USB port. it will be ok
Sent from my Nexus 7 using XDA Premium 4 mobile app
dinocrisis said:
in my country it happened to many people. you should take the nexus to ASUS reparing service and ask them to replace the USB port. it will be ok
Sent from my Nexus 7 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Warranty is over . Asus will probably rip me off for it.
Btw just to note charging is substantially faster when connect to pc . It charges from 5% to 31% in 2hrs .
Sent from my MT11i using Tapatalk
Whether out not your warranty is over depends on where you live. If you're U.S. you are probably out of luck, but you may not be elsewhere - an increasing number of countries now have two years as standard, despite what the card in the box may say.
I have the exact same problem. Started going down hill after install vanir. I thought flashing to stock fixed. it might have for a while. Cant live on stock anyway. Otherwise I don't know what to do with it.
Check your account syncs in settings. I use two different accounts with Google (that real name policy uses a very odd definition of real name,) and if what syncs with each account isn't set just right the poor thing will get stuck awake and trying to sync forever because the awful Google+ will forbid some things without telling the device to stop trying. That absolutely rags the battery.
It's certainly not the only possible cause, but it returns, unbidden, often enough to be worth checking for.
Your situations seem different from mine ...
Anyone has a fix for this ?
Sent from my MT11i using Tapatalk
Fuzzra said:
Whether out not your warranty is over depends on where you live. If you're U.S. you are probably out of luck, but you may not be elsewhere - an increasing number of countries now have two years as standard, despite what the card in the box may say.
Click to expand...
Click to collapse
Mine is a u.s model shipped to Singapore that I purchased online
Sent from my MT11i using Tapatalk
I think my nexus 7 has a bad USB port as was suggested in another thread. A closer look it appears to be severed. Android tuner shows a negative flow. Its been fun anyway.
You can maybe PRESERVE IT BY CONNECTING CHARGE CABLE TO ADAPTER??
---------- Post added at 07:54 PM ---------- Previous post was at 06:55 PM ----------
Fuzzra said:
Check your account syncs in settings. I use two different accounts with Google (that real name policy uses a very odd definition of real name,) and if what syncs with each account isn't set just right the poor thing will get stuck awake and trying to sync forever because the awful Google+ will forbid some things without telling the device to stop trying. That absolutely rags the battery.
It's certainly not the only possible cause, but it returns, unbidden, often enough to be worth checking for.
Click to expand...
Click to collapse
Another thing I didnt think to try was just use a restricted user profile and charge with that.
I fixed problem with "Wug's Nexus Root Toolkit " flashing 4,4,2 and bootloader 4.23(wich i think was my problem becouse it freezing some times when i was in it).
happy flashing and flash it from bootloader, not developer option.
I had all kinds of charging issues for awhile, turns out the battery cable had become loose. Just pop off the back and check that the battery cable is plugged in all the way and seated firmly. The battery itself was also loose and sliding around in its compartment (probably how the cable became loose in the first place), which I resolved with some electrical tape.:victory:
Hopefully it's not worse than that, good luck.
I created a thread about a similar issue. I have the Asus dock. Charging on there is brilliant. Charging via USB is pathetically slow
Sent from my LT26i using Tapatalk
Rcoil73 said:
Warranty is over . Asus will probably rip me off for it.
Btw just to note charging is substantially faster when connect to pc . It charges from 5% to 31% in 2hrs .
Sent from my MT11i using Tapatalk
Click to expand...
Click to collapse
So it could be that your charger is not powerful enough ... Tablet need more than phone usually. I know that because I use the same charger for my Nexus and a Samsung SIII and the time it takes to get from 5% (typical ) to 100% is quite different!
I had this slow charging problem on both mine and my wife's N7. Checked, opened and adjusted the battery connector a few times through few weeks but it did not solve the problem. Later I found out it was the usb ribbon connecting to the mirco usb port behind the speaker was loosen even when locked. I cut and stick a small piece of tape on the back of the ribbon, thicking it slighty, relocking it back in place. Solved the charging issue and both devices are charging back on time properly.
I'm having crazy slow charging recently on my Nexus 7 and I'm trying to figure it out myself.. USB or Dock charge the same; about 300-400mA, that's it. USB speeds. Using the stock charger and cable.
I recently went to AOKP so I wonder if it's something there but I can't figure it out.
I've found that different combinations of USB cables and chargers make a big difference. I have a very long micro USB cable I like to use for charging because the couch is far from the outlet, but attaching that to the Nexus 7 or Nexus 5 wall charger yields a slow charge. If I play a game like Magic 2014 while charging that way, the battery goes down as I play. However some of the short USB cables that came with devices produce a fast charge with both the N7 and N5 wall chargers - the battery actually moves up while playing the same game. So I've resorted to using an old-school AC extension cord and plugging the good cable into that so it can reach the couch.
Nexus 7 Slow charging issue
Rcoil73 said:
Hi my nexus 7 is charging at a pathetic rate . I left it to charge for 5 hours from 7.00am to 12.00pm and it only charged from 5% to 12% .
It all happened a few days ago . I charged my nexus 7 to 100% (stock rom used for few months alr )and wiped the battery stats . Following that I drained the battery till 0% . After rebooting , the slow charging problem surfaced . I have already did a clean wipe and reinstall of stock 4.1.2 using nexus toolkit , the problem is still there . Help ?
Click to expand...
Click to collapse
I had this issue for a long time. Tried all the chargers and ROMs I could get my hands on.
Decided that it should be an hardware problem.
I opened up the Nexus 7 and re-soldered all the USB contacts.
I removed the flat cable that goes from the USB PCB Surface mounted connector and cleaned the contacts on it and re-plugged it.
I removed the battery and cleaned the contacts in there with electric cleaning spray.
I re-soldered the battery contacts on the PCB side.
My nexus 7 now goes from 0% to 100% in about 3 hours.
asrdias said:
I had this issue for a long time. Tried all the chargers and ROMs I could get my hands on.
Decided that it should be an hardware problem.
I opened up the Nexus 7 and re-soldered all the USB contacts.
I removed the flat cable that goes from the USB PCB Surface mounted connector and cleaned the contacts on it and re-plugged it.
I removed the battery and cleaned the contacts in there with electric cleaning spray.
I re-soldered the battery contacts on the PCB side.
My nexus 7 now goes from 0% to 100% in about 3 hours.
Click to expand...
Click to collapse
Do you have a video of how to do that? I've bought a new battery thinking that the problema was in my battery. Did not work well, still with the low charging. I don't want to spend more money. So, do you have a toturial of how you did it?
Thanks
asrdias said:
I had this issue for a long time. Tried all the chargers and ROMs I could get my hands on.
Decided that it should be an hardware problem.
I opened up the Nexus 7 and re-soldered all the USB contacts.
I removed the flat cable that goes from the USB PCB Surface mounted connector and cleaned the contacts on it and re-plugged it.
I removed the battery and cleaned the contacts in there with electric cleaning spray.
I re-soldered the battery contacts on the PCB side.
My nexus 7 now goes from 0% to 100% in about 3 hours.
Click to expand...
Click to collapse
Which nexus 7 do you have, 2012, or 2013? And how did you open it?
Thanks,
kkh5
My N7 charges slow as well. Will try the one posted above and clean the usb ribbon.

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