Wrong battery stats? - Nexus 4 Q&A, Help & Troubleshooting

I am running PA 3.5. Today I woke up with my battery being at 20% maybe 45 minutes later I got a notification of the battery being 14% and about two minutes after that the phone just completely died, it would not turn on. Luckily I immediately plugged my phone and got the blinking red light. I was afraid more than ever, and was turning on my PC to find the solution for this problem. In the mean time my phone went to its normal state and was charging. I turned it on and the battery was charging at 2%.
Should I be worried about this issue or has anyone had it happen to them?
Here is a screen shot of what battery stats looked like after reebot
Sent from my Nexus 4 using xda app-developers app

aanonymoushuman said:
I am running PA 3.5. Today I woke up with my battery being at 20% maybe 45 minutes later I got a notification of the battery being 14% and about two minutes after that the phone just completely died, it would not turn on. Luckily I immediately plugged my phone and got the blinking red light. I was afraid more than ever, and was turning on my PC to find the solution for this problem. In the mean time my phone went to its normal state and was charging. I turned it on and the battery was charging at 2%.
Should I be worried about this issue or has anyone had it happen to them?
Here is a screen shot of what battery stats looked like after reebot
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Try searching the Q&A, lots of others have experienced this type of thing..

Related

battery not charging to 100%

new to the atrix.
I installed the latest oat update, and the phone was @ 70% after charging all night. I also noticed it discharge updates only by 10% increments.
I installed the homepage Rom, and it charged overnight to 93%.
I've applied the battery fix, but that only seems to stabilize the display (I noticed it fluctuating before the fix)
is there a fix? I've done calibrations on phones, but I needed to get 100% and the charge while off. Not sure how I can calibrate if I can't get a full charge while on.
Use recovery to wipe battery stats. If it still fails to display 100% when charged shut the phone off. Take the battery out, then plug the phone in. Wait until the "?" on the battery shows up. Then put the battery in while it is still plugged in. Leave it like that for about 30 mins. When you click the volume button the battery will show only 5-10%, but turn the phone on and it should read 100%.
J-man67 said:
Use recovery to wipe battery stats. If it still fails to display 100% when charged shut the phone off. Take the battery out, then plug the phone in. Wait until the "?" on the battery shows up. Then put the battery in while it is still plugged in. Leave it like that for about 30 mins. When you click the volume button the battery will show only 5-10%, but turn the phone on and it should read 100%.
Click to expand...
Click to collapse
I'll try that. I already wiped battery a couple times in cwn
OK, then the 2nd part should do the trick. It works for me anyways. Once you do see 100%, wipe batt stats again and let the battery die, then charge while the phone is off. Should fix you up.
A.VOID said:
new to the atrix.
I installed the latest oat update, and the phone was @ 70% after charging all night. I also noticed it discharge updates only by 10% increments.
I installed the homepage Rom, and it charged overnight to 93%.
I've applied the battery fix, but that only seems to stabilize the display (I noticed it fluctuating before the fix)
is there a fix? I've done calibrations on phones, but I needed to get 100% and the charge while off. Not sure how I can calibrate if I can't get a full charge while on.
Click to expand...
Click to collapse
You might have to wipe battery stats several times. I had an out of the ordinary calibration problem between flashing roms and had to wipe everything several times before it started working properly. Also note, that charging up to 95%-99%, and unplugging and plugging back in and slowly charging past 95% is common and not a problem. The software is estimating battery charge. And if you do charge past 95% and unplug its ok if it quickly goes back down to 95% and then tapers slowly.
I voided my warranty and your mum.
You have to wait for battery to go beyond 95%.
It takes time but it goes their.
My personal experience.
Just drain the battery til it dies. Then plug it in over night while you sleep. Once you wake up wipe battery stats and everything should be good.
Sent from my MB860 using Tapatalk
drpratik said:
You have to wait for battery to go beyond 95%.
It takes time but it goes their.
My personal experience.
Click to expand...
Click to collapse
Jnewell05 said:
Just drain the battery til it dies. Then plug it in over night while you sleep. Once you wake up wipe battery stats and everything should be good.
Sent from my MB860 using Tapatalk
Click to expand...
Click to collapse
I think he has tried both of these methods. I know I did. What I told him to do was the only thing that worked for me.
OK J, it looks like that fixed it.
Although battery showed 4169, and I saw others with 4200
Thanks issued!
try discharging until the phone shuts off and charging it again without turning it off.
A.VOID said:
OK J, it looks like that fixed it.
Although battery showed 4169, and I saw others with 4200
Thanks issued!
Click to expand...
Click to collapse
Hmm...battery should show 4203 when fully charged. Mine has actually displayed 4205 a couple of times.
Sent from my MB860 using Tapatalk
I'm going to try it again. I tried a different rom, and it only went to 92%. I redid the battery pull and Saw 4185.
Sent from my MB860 using XDA App

"Show low low battery logo" Nexus 7 thinks battery is dead even when fully charged!

"Show low low battery logo" Nexus 7 thinks battery is dead even when fully charged!
I have already got a replacement on order from the Play Store but since I haven't seen any reports on this after plenty of searching I figured I'd describe the issue.
My 16gb Nexus 7 worked pretty much flawlessly for the first several days of pretty light use minus very minimal flicker on occasion. As of two days ago the unit is basically unusable as it randomly but excessively decides that the battery is dead even though it is fully charged. The first several times this happened I wasn't paying attention and I thought it just shut off by itself, but then I started to watch it more closely but it also started happening more and more. As of this morning it will not stay on more than 5 minutes before it audibly notifies a low battery with the messages "Connect Charger" and "Powering down". Sometimes it will give two options "Battery" and "OK" but I was never able to actually get the buttons to respond because it would already be shutting down. Other times it will just show the connect charger and powering down messages with no buttons which is strange, but in either case the device shuts down.
Once I started troubleshooting I figured out a little more information.
Watching the lock screen while it is charging I will see it go from it's (I think) correct charge percent to 0% randomly.
While not charging it will either show a red battery indicator in the notification area or just an empty battery when it decides to shut down
Sometimes it will boot right up and be back up to regular charge level (of course just to shut down again within a few minutes)
Other times it will not boot up and I noticed the error message (almost like a debug prompt mistakenly left in the code) in the upper left corner "Show low low battery logo" + some strange symbol like when you get 100 1-Ups in Super Mario Brothers . Yes the message has the word "low" twice - I guess this is lower than standard low!
Anyway, kinda bummed but since I have not seen any other report of this particular issue I'm hopeful that the replacement will not have the same problem. I'm just hoping I don't get a unit that has some of the other problems being reported so I'm crossing my fingers.
Mine started doing the same this morning
Sent from my LT26i using xda app-developers app
This sounds pretty similar to my problem from another thread. Every time it hits 25% while discharging it dies. Normally I'd say it's just a software calibration issue and fixable by wiping battery stats, but I've wiped several times at 100% and run down to 25% and it still dies.
Do you find that you still get a normal amount of battery life before it dies? It'd help to establish whether this is the battery misreporting, or actually not discharging properly.
* Strangely this time after my N7 had died at 25% I turned it on and it's at 0% battery. It's been charging for ~15min and it still says 0%... When you all first got the device, did you let it run to 0%, or did you charge it right away?
** And now, after almost an hour, it's at 1%. Seems to be charging, but brutally slowly (and I'm using the bundled charger, not PC USB).
omnikai said:
This sounds pretty similar to my problem from another thread. Every time it hits 25% while discharging it dies. Normally I'd say it's just a software calibration issue and fixable by wiping battery stats, but I've wiped several times at 100% and run down to 25% and it still dies.
Do you find that you still get a normal amount of battery life before it dies? It'd help to establish whether this is the battery misreporting, or actually not discharging properly.
* Strangely this time after my N7 had died at 25% I turned it on and it's at 0% battery. It's been charging for ~15min and it still says 0%... When you all first got the device, did you let it run to 0%, or did you charge it right away?
** And now, after almost an hour, it's at 1%. Seems to be charging, but brutally slowly (and I'm using the bundled charger, not PC USB).
Click to expand...
Click to collapse
Yours sounds like a similar but different issue. My N7 dies regardless of how much charge it has. It can have 100% charge and within 5 minutes it will report 0% charge and die. Then when I can get it to boot again it will be back up to 99% charge again. I can't get more than 10 minutes of use before it dies regardless of how much charge it truly has.
omnikai said:
This sounds pretty similar to my problem from another thread. Every time it hits 25% while discharging it dies. Normally I'd say it's just a software calibration issue and fixable by wiping battery stats, but I've wiped several times at 100% and run down to 25% and it still dies.
Do you find that you still get a normal amount of battery life before it dies? It'd help to establish whether this is the battery misreporting, or actually not discharging properly.
* Strangely this time after my N7 had died at 25% I turned it on and it's at 0% battery. It's been charging for ~15min and it still says 0%... When you all first got the device, did you let it run to 0%, or did you charge it right away?
** And now, after almost an hour, it's at 1%. Seems to be charging, but brutally slowly (and I'm using the bundled charger, not PC USB).
Click to expand...
Click to collapse
I'm starting to have this same issue, however mine goes at about 19%. Just turns off. I have also seen the show low battery in white text thing. I have tried calibrating by fully charging then deleting batterystats.bin from data/system and letting it decharge and it still died around there, I'm recharging again to 100 to see what happens this next time I let it go... thought mine was issue free than this happens
Well in case anyone else runs into this, I have no idea what caused this or how I got out of it thinking it was dead at 20%. I tried deleting the stats, reflashed stock and then CM10 and back again, tried a different kernel, and still died at 20 and gave me the "low low battery logo".
I just took it into Gamestop where I got it and started the process for an exchange, so I have another one coming now. Go figure when I got home I plugged it back in, and now this time just like omnikai said instead of being at 20% it was at 0 when I turned it on. Been a while and now and seems to be charging normally so hopefully it will decharge fine.. either way really weird only problem I've had with mine so far
** Just wanted to edit and say its now decharging normally dont know what caused it to spazz out or fix it one of those ghost in the machine android moments
NeoMagus said:
Well in case anyone else runs into this, I have no idea what caused this or how I got out of it thinking it was dead at 20%. I tried deleting the stats, reflashed stock and then CM10 and back again, tried a different kernel, and still died at 20 and gave me the "low low battery logo".
I just took it into Gamestop where I got it and started the process for an exchange, so I have another one coming now. Go figure when I got home I plugged it back in, and now this time just like omnikai said instead of being at 20% it was at 0 when I turned it on. Been a while and now and seems to be charging normally so hopefully it will decharge fine.. either way really weird only problem I've had with mine so far
Click to expand...
Click to collapse
Replacement N7 seems to be fine thusfar...
Apparently, somebody in StackExchange is having the same issue as well:
http://android.stackexchange.com/questions/27222/nexus-7-system-error-show-low-battery-logo
if anyone else gets this, try disconnecting the battery and then re connect and see if that fixes it. i had same type of issue on viewsonic g-tab and that was the required fix.
Mine did it at 10%, calibrated the battery and im getting truly awesome battery life 2 full days without a charge
Sent from my SAMSUNG-SGH-I717 using xda premium
---------- Post added at 02:54 PM ---------- Previous post was at 02:52 PM ----------
This is the app
https://play.google.com/store/apps/details?id=com.nema.batterycalibration
You need to be rooted
Sent from my SAMSUNG-SGH-I717 using xda premium
Same problem here when battery reaches 24% whole tab dies...
Did someone fixed it?
egomezmorales said:
Mine did it at 10%, calibrated the battery and im getting truly awesome battery life 2 full days without a charge
Sent from my SAMSUNG-SGH-I717 using xda premium
---------- Post added at 02:54 PM ---------- Previous post was at 02:52 PM ----------
This is the app
https://play.google.com/store/apps/details?id=com.nema.batterycalibration
You need to be rooted
Sent from my SAMSUNG-SGH-I717 using xda premium
Click to expand...
Click to collapse
While this reply is late to the game, it needs to be pointed out that such apps are 100% snake oil and do not calibrate the battery. They are based upon gross misinformation and any dev that tells you that clearing batterystats.bin has any effect on battery life or reported battery charge clearly doesn't know how Android works.
Sent from my Galaxy Nexus using Tapatalk 2
Beekhouse said:
Same problem here when battery reaches 24% whole tab dies...
Did someone fixed it?
Click to expand...
Click to collapse
Have you fixed this yet cos mine does the same?
I had been having the same problems that everyone described: would suddenly die at 25% and wouldn't turn back on unless I gave it a charge for a bit and then held the power button down for a while.
For the last 2 weeks, I've been charging it only with the stock charger and that seems to have fixed it. Previously I would charge with any charger I had around.
Not sure if it's a permanent fix but it's working now (I've taken it down to 4% before charging it back up).
AdamK123 said:
I had been having the same problems that everyone described: would suddenly die at 25% and wouldn't turn back on unless I gave it a charge for a bit and then held the power button down for a while.
For the last 2 weeks, I've been charging it only with the stock charger and that seems to have fixed it. Previously I would charge with any charger I had around.
Not sure if it's a permanent fix but it's working now (I've taken it down to 4% before charging it back up).
Click to expand...
Click to collapse
I only use the stock charger on mine but after this happened so often I tried another one and battery charged OK but then kept blipping from say 50% to 54%, went bed with it at 49% and this morning dead again. Charged it again today on stock charger and waiting to see what happens.
Sorry all for this bump.
I just got this same issue tonight on stock, unrooted nexus 7 16gb and I only use the stock charger, I let it die through battery and then when I charged it amend turned it on, all these problems happened.
One symptom that hasn't been mentioned is that the clock is set back to January 1st 1am.
I managed to get it to start without turning off by holding the power button until the Google logo showed twice, at the moment it's on but charging.
Hope this doesn't become a problem again in the future.
NeoMagus said:
Well in case anyone else runs into this, I have no idea what caused this or how I got out of it thinking it was dead at 20%. I tried deleting the stats, reflashed stock and then CM10 and back again, tried a different kernel, and still died at 20 and gave me the "low low battery logo".
I just took it into Gamestop where I got it and started the process for an exchange, so I have another one coming now. Go figure when I got home I plugged it back in, and now this time just like omnikai said instead of being at 20% it was at 0 when I turned it on. Been a while and now and seems to be charging normally so hopefully it will decharge fine.. either way really weird only problem I've had with mine so far
** Just wanted to edit and say its now decharging normally dont know what caused it to spazz out or fix it one of those ghost in the machine android moments
Click to expand...
Click to collapse
I am currently having the 20% problem. Did your tablet reaminworking normally since the self correction?
A Probable solution to the nexus 7 dying at 15% + charge
dbstrat said:
I have already got a replacement on order from the Play Store but since I haven't seen any reports on this after plenty of searching I figured I'd describe the issue.
My 16gb Nexus 7 worked pretty much flawlessly for the first several days of pretty light use minus very minimal flicker on occasion. As of two days ago the unit is basically unusable as it randomly but excessively decides that the battery is dead even though it is fully charged. The first several times this happened I wasn't paying attention and I thought it just shut off by itself, but then I started to watch it more closely but it also started happening more and more. As of this morning it will not stay on more than 5 minutes before it audibly notifies a low battery with the messages "Connect Charger" and "Powering down". Sometimes it will give two options "Battery" and "OK" but I was never able to actually get the buttons to respond because it would already be shutting down. Other times it will just show the connect charger and powering down messages with no buttons which is strange, but in either case the device shuts down.
Once I started troubleshooting I figured out a little more information.
Watching the lock screen while it is charging I will see it go from it's (I think) correct charge percent to 0% randomly.
While not charging it will either show a red battery indicator in the notification area or just an empty battery when it decides to shut down
Sometimes it will boot right up and be back up to regular charge level (of course just to shut down again within a few minutes)
Other times it will not boot up and I noticed the error message (almost like a debug prompt mistakenly left in the code) in the upper left corner "Show low low battery logo" + some strange symbol like when you get 100 1-Ups in Super Mario Brothers . Yes the message has the word "low" twice - I guess this is lower than standard low!
Anyway, kinda bummed but since I have not seen any other report of this particular issue I'm hopeful that the replacement will not have the same problem. I'm just hoping I don't get a unit that has some of the other problems being reported so I'm crossing my fingers.
Click to expand...
Click to collapse
I recently started having the same problem with my 2 month old rooted Nexus 7 (wifi only) . It was dying at about 19% - 23% charge . Tried doing the battery recallibration at 100% charge, even wiped the device clean and flashed the Jellybean 4.2 factory image but it didn't work.
I talked with the ASUS service center guys to get it fixed, and created a sort of guest user so that I won't have to disconnect my accounts. After that my problem seems to have been fixed. I discharged it to about 4% and then put it to charge, it's charging properly now so I am hoping the problem has been fixed.
I am not sure whether this would work for everybody, but I guess it's worth a try.

Sudden battery drain when standby

here is the situation, while i left my tablet in my backpack on the way to work, i noticed my backpack becoming very warm.
to my surprise, it was my n10 and upon inspecting, the device has already died 0% battery and cannot turn back on unless i plug in the charger. Mind that i did not do anything prior and it was left untouched since last night with the battery at approx 80%. And battery drain happened while it was in my backpack as the device was unusually hot when i took it out.
Now the weird thing too is that while it's charging, it completely froze to a black screen at least 3 times, everytime needing me to hold the power button for few seconds to reboot the device back.
it's the first time this happens on my n10 and it wasnt a result of a new rom or app i've installed as i haven't touched my current configuration for months.
anyone experienced this and know what might be the cause? battery dying/faulty perhaps?
Sent from my Nexus 10 using Tapatalk 4 Beta

battery drop while turned off?

hey guys
i got a nexus 4 about 3-4 months ago. when 4.3 came out i let him update, so i'm running 4.3 stock. no root, no custom rom, no custom kernel.
for some time my battery acts strange, phone is charged to 100% then i turn it off for 2-3 days. when i turn it back on battery says ~ 50% so it seemsit dropped 50% in 2-3 days while turned off. already tryed different chargers and cables but didnt changed anything...
already tryed to find and answer on google and xda but i just found threads about poor battery life in general or some apps draining battery (when phone is turned on)
when phone is turned on its battery seems to be ok, compared to my old s2 it drains about ~ 2% / h while turned on and standby
did somebody got the same issue? and know how to fix it?
thx
If you are sure about this huge drop during off, you should send it back for service.
A device normally should lose almost nothing if its turned off.
Sent from my NookColor using Tapatalk 4

Battery issues

Dear XDA,
Since a few weeks I began experiencing problems with the battery of my Galaxy Note 4 (SM-N910F).
It all started with the phone lasting a lot shorter per day and suddenly shutting off at around 5-8% battery left.
Today it was the worst I've ever experienced. I make a short list of what happened.
Charged to 100% overnight and taken charger out at 7:30
Went to the gym, 98% left after 1 hour idle
Bumped an extra 4% when transferring files from PC at 15:10 (from around 78 to 82%)
Watched 10 minutes of Under the Dome and did some Whatsapp
Read an article on the internet
Phone was suddenly at 28% at 19:00, shut it down for a bit
Powered on at 19:25 with only 18% left
Phone died at 19:30 with 14% left. 2h and 40 min Screen On Time. 12 hour standby.
Still able to boot but can't get past coloured Samsung logo
LED Notification stays blue and can keep booting for about 30 more times.
So basically my phone died after 2h and 40 min Screen On Time with still some charge left.
This is the worst I've had so far.
The weirdest part is that the Notification LED stays on after trying to boot it once. The only way to remove this is by taking out the battery.
When the phone was new I was able to at least get 4-5 hours Screen On Time depending on brightness.
Things I tried to solve it:
Full charge cycle and emptying it
Factory reset
Checking for unusual activity (wakelocks)
I've checked for any wakelocks but I think this might be a defect instead.
Can anyone please help me? Any advice is appreciated! Thanks in advance anyway!
Kind regards,
Daniel Collignon
Anyone?!
If you use latest version of tapatalk that's the problem
Try 4.9.5 - you can find @ apkmirror site...
Danilo Pantelić said:
If you use latest version of tapatalk that's the problem
Try 4.9.5 - you can find @ apkmirror site...
Click to expand...
Click to collapse
I don't even use Tapatalk...
Try a new battery, it can become 'weak' after a while.
Sent from my SM-N910F using XDA Premium 4 mobile app
Don't worry ! I have gone through this too . A log or a screenshot of BBS , System battery graph would help us . Please share it
well my phone is n910H. it lasts less than a day and it dies when it reach 30% and when i connect the charger it gives me 0%. does this means the battery is faulty or is it a software issue ?
Me too!
I have the exact problem stated in the op. I am pretty sure it must be a callibration issue because I've tried too many times the *#0228#. I've tried taking out the battery and putting it after some minutes. I've tried off-charging, on with screen off charging, on charging, fast charging, slow charging, everything and I have at most 4 hours of use, with 1 or 2SOT.
Sometimes I charge it and it stops at 70 or 75%. Today, it stopped at %50 (off-charged) and I removed the battery, waited 5 minutes, put it back on and it showed 100% (still off). Battery lasted less than 1 hour (okay, I was playing candy crush and clash of clans ).
I use my phone without the power saving mode for a snappier performance, but it's impossible that the battery lasts so little time.
Could you solve it? or just bought a new one?
Battery drain
I have same issue on my Note 4 for a last few months. And it's just getting worse.
Today it dropped from 48% to 5% and turned off.
I even took it to Samsung service and they told me that everything is OK with phone and that I have to change charging equpment.
I did that and it didn't help. It's happening again.
Help please?

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