So I was messing around on my phone this morning when all of a sudden the screen flickered and went out. Last time I remembered seeing the battery charge it was at about 43% so I didn't think it was a dead battery. I tried to turn the screen back on, it would give the short vibration but that's it. I tried many things, battery pulls, boot to d/l mode, boot to recovery, boot to fastboot, plugging in the charger and tried all that too, nothing worked. At one point when I plugged in the charger the battery icon came on and it was empty...let sit on the charger for a few and tried it again. Nothing. Then I attempted to put it in d/l mode and it started to boot up, got through to my homescreen and again, the battery was fully drained so it went out again. I'm running CWM v6.0.1.2 and thought I was screwed since it's widely known that there is/was a CWM bug that wouldn't allow the battery to charge in the phone if it was drained to 0....luckily after about 20min on the charger it was at about 15% and all was well.
Not sure if i'm the last person to find out but just wanted to share with you guys that the CWM bug that prevented the battery from charging in the phone if it was completely dead, is no longer. First thing I did after charging it up fully was calibrated the battery, snake oil or not, and it's now been 3.5hrs and i'm at 98% so it seems like it's working since I was losing at least 1% an hour before.
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I had a show running on Netflix while working at my desk this morning, when my phone froze solid. No buttons, hardware or soft, would respond. The phone was connected to AC power and was showing 100% charged battery.
I pulled the battery, replaced it, and booted up. When it came up the battery was showing completely discharged (2%). I'm rooted w/ ClockworkMod installed, so I rebooted into recovery and cleared battery state/Dalvik/cache as a precaution, but this changed nothing.
So, now my phone is powered off and charging. The battery level is increasing (very) slowly, but has anyone seen this, or does anyone have any ideas what happened?
Charge it to 100%, then wipe battery stats from recovery, then drain battery completely (no "on the go" charging), then recharge to 100%.
So I've had my phone for about 2 weeks and rooted it on day1 with Calkulin's rom.
I charge overnight and when I wake up after it being plugged infor 6-8hrs or longer, I'm seeing a blue light but the battery is only at about 65% (this happens every night).
If I unplug/plug back into the charger it goes orange again and continues to charge. Then it stops again at 75-80% and I have to do the same thing.
I did try a battery calebration with clockwork recovery when I first flashed the phone. Other than that, I don't know what else to try.
rek410 said:
So I've had my phone for about 2 weeks and rooted it on day1 with Calkulin's rom.
I charge overnight and when I wake up after it being plugged infor 6-8hrs or longer, I'm seeing a blue light but the battery is only at about 65% (this happens every night).
If I unplug/plug back into the charger it goes orange again and continues to charge. Then it stops again at 75-80% and I have to do the same thing.
I did try a battery calebration with clockwork recovery when I first flashed the phone. Other than that, I don't know what else to try.
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It seems like you need to wipe the battery data from recovery mode.
Here are some related threads -
http://forum.xda-developers.com/showthread.php?t=1517044
Or you can just search with 'xda wipe battery stat'. I will show you thousands of returns.
Try going in to the CWM recovery and go to "wipe>battery stat, than reboot you. That should put you at the true % value.
After I finished charging my tablet to 100% today, I set it down and went on with my tasks for the day. Checking it here and there, I didn't realize until now that the battery has remained at 100% for the past six hours. I have tried powering down and booting back up as well as plugging the tablet in briefly.
Both the battery menu and Dashclock display "Not charging" instead of "Discharging." When I plug the tablet in, it immediately tells me that it is fully charged.
So needless to say, I'm looking for a solution, preferably simple. Factory reset is a last resort. I'm running an unlocked and rooted Nexus 7 (2013) with stock 4.3, so no third-party ROMs or kernels messing with the battery.
This issue is ironic because I was pretty close to fully-charged last night (80-90%) and when I woke up, I was at ~50% and the battery menu displaying that "Android OS" was hogging 50% of my battery usage. Normally screen comes out on top. I attributed this to my home Wi-Fi router's flakiness, rebooted the router, and the tablet seemed to restore to the correct battery usage levels.
this actually happened to me the other day. left the n7 on the wireless charger overnight and woke up to battery stuck at 100%. at first I thought I was getting some stupid crazy awesome battery life, but then realized it was just stuck.
i did a factory reset to "fix it"...
Nexus 7 1st gen had that same issue. Mine resolves itself after a few charge cycles. Basically the % just gets pinned @ 100% and starts draining down when in reality the tablet might be ~70-80%. Just keep using it and it'll drop. Problem is, since the calibration is off, using it while you have this issue to ~20-30% may cause it to run out of juice and shut off on you since in reality it would be 0%. So I'd use it down a lil bit and put it back on the charger. I just didn't think the new one would have the same problem :\
Have you tried booting into the recovery to see if the battery percent is correctly displayed there?
I ended up booting into TWRP, where the battery displayed as 100%. It may have just been some sweet battery life, but it actually seems like it was stuck, or at least discharging at a very slow rate. Down to 87% currently, so it was fixed after I booted into recovery. Thankfully, just a hiccup and no factory reset necessary.
Experienced another random reboot today, but lucky me, I get to save that for another thread!
Aria807 said:
Nexus 7 1st gen had that same issue. Mine resolves itself after a few charge cycles. Basically the % just gets pinned @ 100% and starts draining down when in reality the tablet might be ~70-80%. Just keep using it and it'll drop. Problem is, since the calibration is off, using it while you have this issue to ~20-30% may cause it to run out of juice and shut off on you since in reality it would be 0%. So I'd use it down a lil bit and put it back on the charger. I just didn't think the new one would have the same problem :\
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So this has become a common problem for me now. every time i fully charge the N7 and leave it plugged in the battery percentage gets stuck. rebooting in recovery gets it unstuck but throws off the calibration/percentage.
Weird problem, did some searching but can't find anything that matches my problem exactly.
My Epic 4G (running Vanir kitkat) shut off the other day when I unplugged it from my car charger to go into the store. I turned it back on and it booted past the Samsung logo, and began the boot animation so I put it back in my pocket. When I pulled it back out a few minutes later it was off again. It took me a few more restarts to realize it wasn't booting past the boot animation. Each time it loaded less and less of the boot animation. Now it will show the Samsung logo and that's it.
It will boot fully into the rom, but only when it's plugged in to a charger. This indicates to me that the battery is shot, except it seems to charge up, and will discharge if I try to continuously boot with it unplugged. Similarly, if I have it plugged in and boot into the rom I can run various android battery apps (including the built in *#*#4636#*#*) and they show the health as "Good" and give me some additional stats on it, including what seems an accurate charge level.
Is it possible the battery life has degraded so badly that 100% charge means half a second? If I unplug while the phone is on it will shut off.
Halp!
Take the battery out and "slap it" (face/back side down) about an inch or so high onto a counter top 3 or 4 times using your fingers. For whatever reason I've been able to bring batteries back to life or extend their life by doing this. I have no idea why it works.
If it doesn't work the first time then try it a several more times. If it doesn't come back to life then it's probably permanently dead.
Hey guys, I've had my phone for 4 or so months now and I always charge it while my phone is off and never had any charging/battery issues until today, I decided to charge my phone while it's on and it charged up to 25% and I restarted my phone without removing it from the charger and after it booted back it it's showing 50%, I restarted a few times, tried a cold boot, it's still 50%.
Is this a known issue with this phone? does anyone know what's causing this? I've never had this happen before.
EDIT: After this happened I ran my battery to 0% so I can attempt a battery calibration and when I poped it on the charger it showed my battery was actually 0% and showed a yellow hazard triangle thing (normally it only drops to 1% and there has never been a yellow triangle before)
Sometimes the Android system can incorrectly report a battery charged. I have had it happen to me on my Nexus by about 10%, but have not had it happen to me on my G3. I would not worry about it too much if it only happened to you once. If in continues you to jump around in battery percentage, then I would suggest getting a replacement battery. Keep in mind to try not to leave it charging for very long after reaching 100%, from my experience it can effect a battery's ability to hold a charge if that is done repeatedly. Which means do not leave it charging overnight while you are sleeping. Also I would not suggest running it until 0%, I would imagine a sudden shut down of the Android Operating system is not a healthy thing for it either. Just like it is not good to go up to a computer and just pull the power cord.
AndroidPurity said:
Sometimes the Android system can incorrectly report a battery charged. I have had it happen to me on my Nexus by about 10%, but have not had it happen to me on my G3. I would not worry about it too much if it only happened to you once. If in continues you to jump around in battery percentage, then I would suggest getting a replacement battery. Keep in mind to try not to leave it charging for very long after reaching 100%, from my experience it can effect a battery's ability to hold a charge if that is done repeatedly. Which means do not leave it charging overnight while you are sleeping. Also I would not suggest running it until 0%, I would imagine a sudden shut down of the Android Operating system is not a healthy thing for it either. Just like it is not good to go up to a computer and just pull the power cord.
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Thanks for the input.
I never leave my phone on the charger while I sleep since it only drops 1% while I sleep. My phone actually only goes on the charger like 3 times a month
I know it's not good to fully drain the battery very much, I was just draining it to attempt a battery calibration in the os. And when I do this my phone usually only drops to 1% then dies, but all of a sudden it dropped to 0% this time and showed a big yellow triangle with a big exclamation mark in it
Anyways I reflashed my rom in hopes I can flush the problem out. In 4 months of owning this phone I've never seen this warning before.
This is almost exactly what happened with my old phone (Samsung Captivate Glide). If this continues to happen, it is one of the first signs of the battery failing. But if this is a one time thing, I wouldn't worry about it.
In my case, the battery was going bad. It started going from any % battery, down to 0 instantly, forcing a shutdown. After rebooting, It would show a decent charge (~60% most of the time), but would do the same thing within 5 minutes. At first it only acted up like this once a month, but it became more and more frequent that it happened every day, after using the phone for only 15 minutes. The only fix is to get a replacement battery.
fire219 said:
This is almost exactly what happened with my old phone (Samsung Captivate Glide). If this continues to happen, it is one of the first signs of the battery failing. But if this is a one time thing, I wouldn't worry about it.
In my case, the battery was going bad. It started going from any % battery, down to 0 instantly, forcing a shutdown. After rebooting, It would show a decent charge (~60% most of the time), but would do the same thing within 5 minutes. At first it only acted up like this once a month, but it became more and more frequent that it happened every day, after using the phone for only 15 minutes. The only fix is to get a replacement battery.
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tyvm, This is extremely helpful info to keep in mind. Now that you mention it I have seen the battery kinda swollen up a couple times when it got hot, only ever so slightly but I did notice it.
If my issue persists i'll defnitly try a new battery, thanks for the tip