Related
I apologize in advance if there is a similar thread; I could not find one.
My EVO has been fine, no issues. I use it heavily every day. I'm running Cyanogen 7 nightly 147 (I think) and have been for 4 or 5 days. Using the Tiamat kernel running SMARTASS.
Last night I shut down around midnight with around 50% power. I plugged in the charger but don't remember if the charging light came on then. This morning there is no charging light and the phone won't boot. Tried long holding the power button, battery pulls, pulled the SD card (for lack of anything else to try). Nothing has had any effect.
Does anyone have other ideas? I'm at a loss. If it's dead, it sure chose a strange way to go. Any advice would be very appreciated. I need this thing for work and home. Many thanks.
Just after posting I went back to playing with different chargers and power button pushes. The white HTC logo flashed for a second and the phone vibrated but it went right back off. It's the first sign of life I've seen, but I can't get it to repeat or go further.
This happened to my sisters Evo when she first got it last summer. Luckily it was the battery and HTC shipped a new one for free. The warranty on the evo is 15 months so you can try and request a new battery!
Sent from my PC36100 using XDA App
I have found one similar thread: http://forum.xda-developers.com/showthread.php?t=913258. So maybe it is a dead battery. Been getting amazing life recently, so it seems crazy that it would suddenly be dead. Is this common?
Any suggestions for going to the Sprint store with a rooted phone? Since it's a bad battery, they may not need to look at the phone once it boots. I haven't had to do this before, so I'm not sure what to expect.
if you do go to a sprint store, i would not let them keep the phone or even take it out of your sight. if that happens you may well find yourself unrooted. but thats just a guess. you can get on ebay or any other similar site and buy a cheap battery for less than $5. then if thats not the problem go from there. this same problem happened to me but luckily one of my friends also has an EVO so i just used his battery and my phone worked great. so i just bought a new battery
Thanks for the input. Headed to the Sprint store in a minute to see if a battery will solve it.
It was the battery. They tested in at the Sprint store and pronounced it DOA. They said they don't normally have spare batteries but they happened to have one, luckily. I was pretty grabby with the phone and didn't let it go for long. Once it started to boot I took it back and they never saw the Cyanogen screens.
Overall they handled it very well. I was impressed with how responsive they were. I was out of there in 10 minutes.
Hi,
My battery info screen is always showing 0% - Unknown. I´ve tried different charging options but with no success.
The battery is charging and when I connect the Nexus 7 to the adapter/pc is says charging - 0% when locked.
Any help is appreciated.
Thanks
Had the same problem. It was not ROM specific. Even though the reading said 0 it was still charging normally (as far as I could tell).
I called Google (I bought my Nexus 7 from the Play Store) and they replaced it. I think that the battery sensor was bad.
Sent from my LG-P999 using xda app-developers app
Charge your battery to 100 percent, for the best that you can assume as 100 percent - about 3 hours, - and then run this program https://play.google.com/store/apps/details?id=com.nema.batterycalibration root required
Sent from my rooted Nexus 7 via xda-developers app.
MrSchroeder said:
Charge your battery to 100 percent, for the best that you can assume as 100 percent - about 3 hours, - and then run this program https://play.google.com/store/apps/details?id=com.nema.batterycalibration root required
Sent from my rooted Nexus 7 via xda-developers app.
Click to expand...
Click to collapse
wouldnt wiping battery info from CWM do the same thing?
hhwong said:
wouldnt wiping battery info from CWM do the same thing?
Click to expand...
Click to collapse
OP did not explain if they were rooted or not.
Sent from my rooted Nexus 7 via xda-developers app.
Reflash kernel
Just to let everyone know I tried both that app and clearing battery sats in CWM, neither did anything. I even ran it dead and then fully charged with no change. The OP may have a different problem but in my case I definitely think it was a hardware sensor issue.
Sent from my LG-P999 using xda app-developers app
Um, weird, I came home after leaving my tablet on my desk all day at home, with about 35% battery.
It was dead. Like really dead. Dead dead. I don't know if it should've run down 35% totally idle; I'd left it for 3 days before without a problem.
Now when I plugged it in, it turned straight on. Google Screen -> Lock Screen. No colored X.
Showed 0% for 10 minutes. The battery graph was especially weird. For one thing, it had locked the stats and showed as still on battery basically. For another, it showed going from the low end of green to instantly dropping to 0%, red. Unplugged it, and it died instantly.
I'm letting it charge now with it off. Quick power button press shows the charging indicator thing.
I actually have an RMA out for this one for the touch screen issues, so it doesn't matter, but still... weird.
battery sensor/calibration issues
Old thread but I thought I'd add to it for other people with the same problem.
I have basically have the same issue on a stock, rooted 16GB Nexus 7. It's highly intermittent.
It first reared it's head about a month after I got the device (in Aug 2012), on the original firmware. My nexus 7 wouldn't (appear to) charge past 25% and would shut itself off after being on for only a few hours. I spent a day trying to fix it, including wiping the device, but nothing worked. Then magically, a few days later, the problem was gone.
The Nexus 7 worked fine for another month or so and then one day, after having charged it for several hours, I noticed that it was reporting a 0% charge. (Firmware was still stock but had been updated) This time it didn't power off, it just misreported it's charge. I could still run it for 10 hours or so, even though it said that it had a 0% charge and that I should connect the charger. I tried the "battery calibrator" mentioned in this thread which didn't seem to work but the next day, the device reported it had a charge. It's been randomly fluctuating between reporting 0% and a having charge every since. Sometimes it works fine for several days but then it will say 0% again.
It hasn't really affected my use of the device but it can be inconvenient not knowing how much charge you have left. Today I finally called Google and explained the problem and they promptly offered to exchange it. Hopefully this is not a design flaw but a faulty component from bad batch..
There's more than a good bit of bad advice in this thread. That anyone would waste people's time by recommending a ”battery calibration” app or to wipe battery stats is disheartening, as it is widely known that they have no correlation to battery indication.
More often than not, it seems, this problem with the N7 involves the battery connector not being properly seated.
Sent from my Nexus 7 using Tapatalk HD
I'm also having a similar problem, though when my nexus 7 completely dies from the battery I plug in and right away power back up and when it comes to the home screen with 0-1% charge it right away powers down. I tried leaving it off while pluged in let it charge for 5 mins and then power back up again till I see it have a minimum amount of charge, it seems to work not sure if its ROM or kernel related, I'll keep an eye on it.
There's a helpful article that seems to help other nexus 7 users, hope this helps
http://www.droid-life.com/2012/12/27/fix-nexus-7-refusing-to-charge-try-this-trick/
Via Galaxy Nexus [LTE]
I have the same problem with my nexus 7 3g.
Factory reset does not help.
Finally open the back cover (quite easy) and found that the battery cable connector is loose. So I tightened and my tablet is well again.
Hope this help.
Yeah what worked for me was to also unplug my battery. Seemed to correct itself after that. Mine would shut off showing a charge of 60%.
dudung0 said:
I have the same problem with my nexus 7 3g.
Factory reset does not help.
Finally open the back cover (quite easy) and found that the battery cable connector is loose. So I tightened and my tablet is well again.
Hope this help.
Click to expand...
Click to collapse
Does the back just unsnap like a regular battery door?
I have issues sometimes. Like the other night it charged all night and when I woke up it was fine, turn off the alarm on it and had breakfast. Came back and it wouldn't come on. Tried all I could without taking it apart. Ended up removing the back cover, unplugging the battery for ten seconds and then it worked fine. Battery was at 100% once it booted up.
---------- Post added at 08:07 AM ---------- Previous post was at 08:07 AM ----------
atistang said:
Does the back just unsnap like a regular battery door?
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Click to collapse
Use your fingernail to get between it and the chassis. It pops off pretty easy. Just be careful. I'm sure YouTube has a few videos showing it.
atistang said:
Does the back just unsnap like a regular battery door?
Click to expand...
Click to collapse
search for ifixit+nexus+7+battery
You can use your fingernail.
Nexus 7 - Battery 0% Unkown.
dudung0 said:
I have the same problem with my nexus 7 3g.
Factory reset does not help.
Finally open the back cover (quite easy) and found that the battery cable connector is loose. So I tightened and my tablet is well again.
Hope this help.
Click to expand...
Click to collapse
Hi.. I Have the same model and I had the same problem...
I made the turn off method (https://plus.google.com/+DerekRoss/posts/563EVVEPMDS) and did not work...
I rooted my Nexus to calibrate the Battery (http://forum.xda-developers.com/showthread.php?t=1838429) and did not work.
But the in my case the most simple solution works : Unplug /plug the Battery (http://productforums.google.com/forum/#!msg/mobile/Knrn4DThksg/ovuWYHUytZ0J).
Show this video about how to do it:
http://www.youtube.com/watch?v=bjh0H6SZHRM&list=PLBGUp1nK51h0Zyb2wIJjIhtTVQKyfj4BB&feature=mh_lolz
I hope have luck
bye.
hello guys, i had recently bought a nexus 7 16gb about a month ago, and while i was gone for the weekend, my little sister was using it. When i returned, she said it had completely died and she had been charging all night but was still at 0%. I've tried the common fixes that everyone has tried, but for some reason my battery says it will not charge, but yet i left it on the charged for over 6 hours and its still at 0%. When i got to Settings > Battery > it has been unplugged for well over 18 hours. is there any fixes out there or any way to reset the battery stats? i'm on 4.1.2/ stock non-rooted. can post screenshots if needed. i dont want to keep charging and risk overcharging my battery or anything like that. It doesnt get hot, make any weird noises or anything. Thank you in advance!
I think you have loose battery connector.
and please post questions in Q&A section (xda made it for a reason)
stupid4life6 said:
hello guys, i had recently bought a nexus 7 16gb about a month ago, and while i was gone for the weekend, my little sister was using it. When i returned, she said it had completely died and she had been charging all night but was still at 0%. I've tried the common fixes that everyone has tried, but for some reason my battery says it will not charge, but yet i left it on the charged for over 6 hours and its still at 0%. When i got to Settings > Battery > it has been unplugged for well over 18 hours. is there any fixes out there or any way to reset the battery stats? i'm on 4.1.2/ stock non-rooted. can post screenshots if needed. i dont want to keep charging and risk overcharging my battery or anything like that. It doesnt get hot, make any weird noises or anything. Thank you in advance!
Click to expand...
Click to collapse
Sounds like a loose connection in the battery.
If you dare, pop the back open and then check the flex cable.
When she said that 'it has completely died', did she mean it just randomly went off when she was using it and the battery level wasn't empty, or did she mean that she had got the 4% warning and kept using it until it died? This is important.
If it was the former, then yes, the battery connector may have come out. If it was the latter, it's very unlikely its anything to do with the connector. I'm sure I've seen something before about a problem when someone has used it until it has completely ran out of charge until it switched off.
Sent from my Nexus 7 using tapatalk 2. (Gone off HD...)
stupid4life6 said:
hello guys, i had recently bought a nexus 7 16gb about a month ago, and while i was gone for the weekend, my little sister was using it. When i returned, she said it had completely died and she had been charging all night but was still at 0%. I've tried the common fixes that everyone has tried, but for some reason my battery says it will not charge, but yet i left it on the charged for over 6 hours and its still at 0%. When i got to Settings > Battery > it has been unplugged for well over 18 hours. is there any fixes out there or any way to reset the battery stats? i'm on 4.1.2/ stock non-rooted. can post screenshots if needed. i dont want to keep charging and risk overcharging my battery or anything like that. It doesnt get hot, make any weird noises or anything. Thank you in advance!
Click to expand...
Click to collapse
Ask her by the scruff of neck, did you drop my n7. If she say's yes, either send in for repair using your warranty or pop off the back. Since it is recently bought - probably better to use the warranty...
thank you guys for the replys, i dont think its a loose battery connector, i popped the back off and everything seems to be okay, i let it charge for like 8 hours and then have been playing with it for about 9 hours now, its what it says in the settings, but it still says the battery has 0%, but its functioning just fine..? idk, its pretty weird but its running completely normal..
knuckles1978 said:
When she said that 'it has completely died', did she mean it just randomly went off when she was using it and the battery level wasn't empty, or did she mean that she had got the 4% warning and kept using it until it died? This is important.
If it was the former, then yes, the battery connector may have come out. If it was the latter, it's very unlikely its anything to do with the connector. I'm sure I've seen something before about a problem when someone has used it until it has completely ran out of charge until it switched off.
Sent from my Nexus 7 using tapatalk 2. (Gone off HD...)
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Click to collapse
yes she said she play stupid temple run until it was completely dead, then didnt charge it until a couple hours before i got home and she said it read 0% the whole time it was charging
Your charger might not be putting out 5volts
Sent from my Nexus 7 using xda app-developers app
thank you xateeq, Wilks3y, and knuckles, it was just a loose cable. Also, when i had the back off, i noticed there was 4 soft buttons but only three that are pressable (power, vol up and vol down). did they have plans to make a camera shortcut perhaps? also, i realized there were two screws that are missing out of the holes. is that a normal mishap on their behalf? thanks for the answers guys, just a little curious.
stupid4life6 said:
there were two screws that are missing out of the holes. is that a normal mishap on their behalf? thanks for the answers guys, just a little curious.
Click to expand...
Click to collapse
Yes, that's normal, because they caused the screen lift in the first parties of N7, and without them the issue seems to have been resolved
stupid4life6 said:
thank you xateeq, Wilks3y, and knuckles, it was just a loose cable. Also, when i had the back off, i noticed there was 4 soft buttons but only three that are pressable (power, vol up and vol down). did they have plans to make a camera shortcut perhaps? also, i realized there were two screws that are missing out of the holes. is that a normal mishap on their behalf? thanks for the answers guys, just a little curious.
Click to expand...
Click to collapse
Yeah when you had the back off you would have seen the empty square bit where there was originally going to be a rear camera, before Google told asus to take it out of the design. Sure someone from the modding community will be working on that.... In fact i saw a thread where they found out what camera was going to be in there, and they were in the process of trying to get it in and working...
Sent from my Nexus 7 using tapatalk 2. (Gone off HD...)
Bought a refurbed 32GB WiFi from sears on Jan 2nd and had no issues except for a screen flicker. I was running a CM10.1 build from around Jan 26th and the latest Motley Kernel.
Yesterday I was using the tablet as usual, but I hadn't charged it in a couple of days
so the battery was getting low. After I got home from work I went to use it but the screen wouldn't come on. I figured the battery had died so I went to charge it, but I never got the powered down battery animation. I've tried holding down all 3 buttons for at least a minute and nothing is happening, and when I connect to my computer I get a USB not recognized error.
I have about one day to return the device to sears with the 30 day warranty, but I just thought I'd check to see if anyone else was able to resolve a similar issue before I do so that I don't lose all of my data, and the fact that if they do get it running again that its rooted and running CM.
Any suggestions, or should I just take it back?
Sent from my Galaxy Nexus using xda app-developers app
Sounds like the Nexus has had it, take it back is most likely the best option
Sent from my Nexus 7 using xda app-developers app
AW: Tablet bricked itself?
One thing I learned from here, is that I never ever should let the nexus 7 run out of juice. Seems to be a death sign..
Jup, take it back.
Sent from my Nexus 7 using xda premium
Not a death sign.
You just need to let it sit on the charger for about 1/2hr, then it should boot right up. People panic when the device doesn't respond or screens start flashing, but it won't boot and they start mashing buttons and posting about their 'I think I bricked my device'. After a device has run down it might take a long press of the power button to get it to boot and/or sit on the charger for a bit.
Running the battery down should not be confused with the Sleep Of Death (SOD). The fix for an SOD is also a long press of the power button.
Sent from my N7 using XDA Premium
Dirty AOKP 3.5 <&> m-kernel+ a34(t8)
try connect to charger at least a half an hour, then press just power button for 1 minute. i had similiar issue, and it worked for me. if dont work, maybe you got battery connector loose problem. try search in general section about that.
Hello all,
I ordered and received my nexus 7 around 2 weeks ago from the play-store. Last night it died, so this morning I hooked it up to the charger and let it charge while I went to classes. I get back around 6 hours later expecting it to be fully charged and I hit the unlock button and nothing happens. I then proceed to make sure it's plugged in and of course it is. So I unplug it and plug it back in, and about a minute and a half later, it turns on, makes the "low battery" noise, then makes an odd ring twice I've never heard before (may be the notification ring) and then it shuts off again and the screen gets weird lines across it and such. I've tried multiple outlets and a few usb ports on my pc and still nothing... I'm currently running paranoid android and franco's kernel. Please help!!!
Thanks,
Chughes13x
Might be worth a try...
Nexus 7 Issue Renders Tablet Useless, But There’s a Fix http://drippler.com/updates/share/nexus-7-issue-renders-tablet-useless-there-s-fix Via j.mp/getDrippler
Sent from my Nexus 7 using Tapatalk HD
najaboy said:
Might be worth a try...
Nexus 7 Issue Renders Tablet Useless, But There’s a Fix http://drippler.com/updates/share/nexus-7-issue-renders-tablet-useless-there-s-fix Via j.mp/getDrippler
Sent from my Nexus 7 using Tapatalk HD
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Click to collapse
And it's fixed! Thanks a ton!