Database Users

[BUG] Full Charge Oddity, Charge to 100%, Unplug to 97%

[Q] Wifi Tether: Subject to $15 T-Mobile Charge?
Curious about this. Currently I'm connected to my laptop for the past 15 min just fine; no alert came up that said I had to get the $15 fee that T-Mobile charges for the "privilege" of tethering on my current plan. Does that mean that an unlocked phone isn't subject to T-Mobile's tampering?
If so, is this the only value for rooting right now? I don't see any other need for root with this phone except if it fools T-Mobile.
Thanks in advance for your answers.

I know there are numerous threads about battery life, but this one isn't about the life itself really.
I can charge my phone to 100%, but when I unplug it, the battery indicator shows 97% right away. I plug it back in, rinse and repeat, and get the same issue. I even tried charging with the phone off.
Ha anyone had luck with using a full 100%?

allen099 said:
I know there are numerous threads about battery life, but this one isn't about the life itself really.
I can charge my phone to 100%, but when I unplug it, the battery indicator shows 97% right away. I plug it back in, rinse and repeat, and get the same issue. I even tried charging with the phone off.
Ha anyone had luck with using a full 100%?
Click to expand...
Click to collapse
This is normal, search some threads

slowz3r said:
This is normal, search some threads
Click to expand...
Click to collapse
I see that some people don't get to 100% during the actual charge process, but haven't seen my issue yet. I'll keep looking. So many of these threads...thanks.
Just trying to figure out whether it's worth going back for another phone or battery. What would you do?

Id keep it, there was an article posted in one of the threads stating why phones do this...the N1 did a similar thing where after it charged going from 100-96 percent went really quickly
i would equate it when you buy a 16 gig SD card and it shows as 15.6 gigs

Same thing here... pretty sure it's happening to most people.
Read this: http://byrong.com/PowerTesting/

allen099 said:
I know there are numerous threads about battery life, but this one isn't about the life itself really.
I can charge my phone to 100%, but when I unplug it, the battery indicator shows 97% right away. I plug it back in, rinse and repeat, and get the same issue. I even tried charging with the phone off.
Ha anyone had luck with using a full 100%?
Click to expand...
Click to collapse
Mine did this until I calibrated the battery. Charged it to 100%, then drained it all the way. Charged it back up to 100%, and now not only does the battery last longer, but the percentage seems to go down in a more linear fashion.

Read on...
http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
Sent from my GT-I9000 using XDA App

brianbrain said:
Mine did this until I calibrated the battery. Charged it to 100%, then drained it all the way. Charged it back up to 100%, and now not only does the battery last longer, but the percentage seems to go down in a more linear fashion.
Click to expand...
Click to collapse
Same here, I've done this two nights in a row, but no change.
Thank you for the links, guys. Pretty insightful actually. I've got it charging right now at 99%. As soon as it hits 100%, I'll take it off and see if it drops instantly. I'm guessing it shouldn't as it JUST hit 100%. But we shall see..
Thanks again!

Same issue here afetr the caliberation and all

I really wouldnt worry about it guys, not like magical unicorns are eating your percentages

Well...I mean, it's not something anybody is "worried" about, but it does suck because I use my phone heavily as I'm in the IT field ... so every percentage counts. After I just unplugged, it went to 99% which my N1 did as well. I'm fine with 99%, but 97% seemed a bit low.

Full charge oddity
When the phone has been switched off and charging the phone shows the fully charged icon on screen when charging appears to be done. Battery Indicator Pro displays only a 95% charge when the phone is switched on. The same happens when the phone is on and being usb charged. When 100% charge is shown and the usb cable is removed the charge is then shown as 95%. This does not happen on my other devices running 2.2. They will show 100% or 99%. A device design or 2.3 bug?

Read this whole post:
http://forum.xda-developers.com/showthread.php?t=871051

The epic 4g has this problem. I think its something with samsung. You have to unplug it, plug it back in, let it charge to full again and rinse repeat until its really at 100%
Then reset your battery stats in cwm
Sent from my SPH-D700 using XDA App

As noted in the stickied FAQ and further discussed in the link provided by nxt (Beat me to it!), this is by design folks.
unremarked said:
Q: I unplugged my phone, and my battery dropped from 100% to 95% immediately, or it won't/takes along time to charge past 99%, what gives?
This is by design. Your phone will slow down and eventually stop pulling charge at or slightly greater than ~95% regardless of what your battery indicator says. This is to extend the overall life of the battery, as constant 100% to 0% charge/discharge cycles will cause it to fail prematurely. If you're interested in really pushing it to 100%, you can use a technique that is called "bump charging" and is better detailed here: http://www.androidpolice.com/2010/12...battery-drain/
Click to expand...
Click to collapse
<- Link has more or less the same info as nxt's.

maybe we need multiple FAQ stickies in this board..

Weird battery reading
My Nexus S was at about 16% when I put it on the charger then I did a quick reboot and it said it was at 52%. I unplugged it, powered off, pulled the battery, then rebooted and it read 28%. Even that is hard to believe after less then 5 minutes of charging. Has this happened to anyone else?
Stock 2.3.1 unrooted
Sent from my Nexus S using XDA App

deyna said:
Has this happened to anyone else?
Click to expand...
Click to collapse
Yes, that has been reported by a number of people. It has happened to me as well when rebooting while charging. Nothing is wrong with your battery though, it just must be a battery stats bug.

Good to know. Thank you for the prompt reply
Sent from my Nexus S using XDA App

[Q] Battery Acting Crazy

Okay so here goes....
alright i have charged my a500 from 11pm to 7am with the device turned off and the battery only charged 1% so i brought it into work and plugged it in and charged it for another 6 hours and the battery was up to 70% than i started playing around with the device and with it plugged in it dropped from 70 to 68% so i got off it and than the battery went back to 70% after a few min. So here is my issue why the hell wont the battery get to 100% after a whole night of charging and also most of the day being plugged into a wall socket. now i admit i didnt do the first 5 hours of charge before playing with the device but i cant imagine it ruining the battery like this if so is there a way i can reset the battery like i can on my phone?

wcooper0077 said:
i cant imagine it ruining the battery like this if so is there a way i can reset the battery like i can on my phone?
Click to expand...
Click to collapse
Could be you have a hardware problem, but more likely your battery meter is just calibrated wrong.
I've never used this, but a quick Google turned up:
http://www.appbrain.com/app/battery-calibration/com.nema.batterycalibration

Hey man thanks for the reply i am going to run that tonight and see if i can get it to go to 100% even thou i have yet to see this on here. than i will run the calibration tool and see what happens

[Q] Battery charged but showed 0% ?

My gf said her N7 showed a 0% charge even though 2 hours earlier she had a 60% charge. She then plugged it in and restarted, then it showed a 60% charge again.
Any ideas what may be wrong?

androidmonkey said:
My gf said her N7 showed a 0% charge even though 2 hours earlier she had a 60% charge. She then plugged it in and restarted, then it showed a 60% charge again.
Any ideas what may be wrong?
Click to expand...
Click to collapse
is it rooted? maybe wiping batter stats will fix it.

Its not rooted.

Fufu_the_Great said:
is it rooted? maybe wiping batter stats will fix it.
Click to expand...
Click to collapse
Not likely. Battery stats has absolutely nothing to do with reported charge level. Wiping it will have the same effect as clearing his market search history... None at all.
Sent from my Nexus 7 using Tapatalk 2

Are you using the charger that came with the Nexus 7? 'Cause the same thing happened to me last month. I used a charger I got from ebay, plugged it in, charged all day, came back, unplugged it, turned on & said it was in the red!

Same thing happened to me shortly after I had the N7.... and that was with using the supplied mains charger and cable.
All I did was leave it alone for a further hour and when I then went back to check the screen it had jumped all of 13%.
I was tempted to return the N7 but as it was night and I couldn't return it I left it on charge overnight...... The following morning it was 100% charged.
Since then it's been charged dozen's of times and not once been a problem since (says he touching wood).

My problem is that it wont show that its charging even tho it is. Tried all chargers i have and even the stock one is same. Was going to return it but all the horror stories I've heard i decided not going to bother. Chances are i get a worse unit back. Personally it looks like the connector is not going all the way in. I am going to shave some of the plastic off and see if that helps. Anyway I think Google needs better quality control at Asus and even at Samsung, i remember how my Gnex was packaged.
Sent from my SAMSUNG-SGH-I747 using xda premium

im running aokp JB build 2 and everytime i turn it on, the little battery icon says for example "54%" and on the lock screen it says "100%"
kinda strange. I was about to ask if it was rooted also, but someone did that before me, so im lost for words

N7 Powers off when battery reaches 20%

So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP

Tony_YYZ said:
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
Click to expand...
Click to collapse
this hasn't happend on my nexus yet but something similar happened to my LG Nitro HD. I basically rooted it and tried some battery calibrating apps on the Play store. In custom recoveries there's also this option to wipe batter status which i think might fix it but i've never tried it.

The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
Tony_YYZ said:
will just simply power off as if it doesn't have any power left at all.
Click to expand...
Click to collapse
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.

Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,

Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...

there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk

tni.andro said:
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
Click to expand...
Click to collapse
NovaSense said:
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Click to expand...
Click to collapse
Kohawk09 said:
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
Click to expand...
Click to collapse
millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
I had tried completely discharging it and then leaving it to charge overnight a handful of times without any luck. I ended up just restoring it to factory state and getting a replacement via Google Play Warranty Support. The new unit works just fine. It's an 07/2013 build unit just like the first one if anyone was interested.

by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.

millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
I can confirm this!
Did help on many devices for me with battery calibration erros...
Last one was a Galaxy S2 last weekend - turned of immediately, showed 0% upon start.
Took battery out for 4 hours, put it back in then and voila... 92% and everythings fine again.

junkinmytrunk426 said:
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
Click to expand...
Click to collapse
No, I do not have a QI charger. I was always using a USB wall charger.

[Q] Major Battery Problems with Nexus 4 - Help Please

Backstory: I've had my Nexus 4 since December 2012. I lived in San Francisco using T-Mobile through August 2013, and I've just moved to Sydney. I got a new sim through Vodafone here, and everything went well. Though my battery did drain a bit faster than usual, I employed Greenify and pretty much solved my problems. Fast forward to this weekend, I used my phone heavily all day and turned it off once it hit 2%. After getting back home for the night, I used it heavily while charging and everything battery/power wise and otherwise was behaving as expected. I went to bed with my phone draining and at roughly ~40% (making a guess) and not on the charger. I woke up at ~3AM, put the phone on the charger, and when i woke up at 6AM, it had only charged to 67%. This was my first sign something was wrong as I usually get a full charge in less than 3hrs. Over the course of the day, I monitored my phone and notice that whether on or off it charges extremely slowly as in 6+ hours still doesn't get to 100%. Additionally, using the phone while it's on the charger is net negative on the battery's charge as in it decreases albeit very slowly while using it on the charger.
I had my phone plugged in last night, and took it off the charger at 2AM at 100%. When I woke up at 6:15AM, I took the following screenshots (attached).
You can see that over 4h 15m off the charger and with no use the phone drained 44% with 37% coming from phone idle, 23% from cell standby, and 15% from wi-fi. This seems ridiculous to me. Can anyone help? What kind of troubleshooting can I do? It feels to me like this is hardware related as I get the problems whether the phone is on or off, but I'm not sure. I'm currently rooted and using AOKP Milestone 2. Here's a screenshot from about phone (attached).
Thanks for any help in advance! I'm really hoping to be able to fix this with software changes as I'd hate to have to buy a new phone with the Nexus 5 right around the corner.

88nexus88 said:
Backstory: I've had my Nexus 4 since December 2012. I lived in San Francisco using T-Mobile through August 2013, and I've just moved to Sydney. I got a new sim through Vodafone here, and everything went well. Though my battery did drain a bit faster than usual, I employed greenify and pretty much solved my problems. Fast forward to this weekend, I used my phone heavily all day and turned it off once it hit 2%. After getting back home for the night, I used it heavily while charging and everything battery/power wise and otherwise was behaving as expected. I went to be with my phone draining and at roughly ~40% (making a guess) and not on the charger. I woke up at ~3AM, put the phone on the charger, and when i woke up at 6AM, it had only charged to 67%. This was my first sign something was wrong as I usually get a full charge in less than 3hrs. Over the course of the day, I monitored my phone and notice that whether on or off it charges extremely slowly as in 6+ hours still doesn't get to 100%. Additionally, using the phone while it's on the charger is net negative on the battery's charge as in it decreases albeit very slowly while using it on the charger.
I had my phone plugged in last night, and took it off the charger at 2AM at 100%. When I woke up at 6:15AM, I took the following screenshots (attached).
You can see that over 4h 15m off the charger and with no use the phone drained 44% with 37% coming from phone idel, 23% from cell standy, and 15% from wi-fi. This seems ridiculous to me. Can anyone help? What kind of troubleshooting can I do? It feels to me like this is hardware related as I get the problems whether the phone is on or off, but I'm not sure. I'm currently rooted and using AOKP Milestone 2. Here's a screenshot from about phone (attached).
Thanks for any help in advance! I'm really hoping to be able to fix this with software changes as I'd hate to have to buy a new phone with the Nexus 5 right around the corner.
Click to expand...
Click to collapse
Is anything wrong with your battery? If it is in very bad shape, you should probably get a new battery.

I don't know that even excessive wake-locks would cause a phone to charge that slowly, especially a Nexus 4.
Was it on the dedicated wall charger? Have you tried multiple chargers? Multiple wall sockets?
tykate said:
Is anything wrong with your battery? If it is in very bad shape, you should probably get a new battery.
Click to expand...
Click to collapse
What's the battery replacement like for the N4? Can't be an easy job that's for sure.

Try factory reset if not battery might be taking a dump
Sent from my Nexus 4 using xda app-developers app

I've used multiple chargers, usb cords, from computer, dedicated wall charger, etc. and it behaves no differently. How can I test to see if my battery is in bad shape or not? Also, how would you suggest replacing the battery?

88nexus88 said:
Also, how would you suggest replacing the battery?
Click to expand...
Click to collapse
http://www.youtube.com/watch?v=5FlLncBp6jI

Even though the battery stats isn;t showing the phone as awake, I wonder if there is an errant app causing a wakelock. I would definitely check with better battery stats to see if anything is preventing your phone form sleeping when not in use.

mattb3 said:
Even though the battery stats isn;t showing the phone as awake, I wonder if there is an errant app causing a wakelock. I would definitely check with better battery stats to see if anything is preventing your phone form sleeping when not in use.
Click to expand...
Click to collapse
The problem is that it's not only discharging quickly while on but charging slowly while off.

advocat3 said:
The problem is that it's not only discharging quickly while on but charging slowly while off.
Click to expand...
Click to collapse
Agree, that doesn't sound normal. Still I would check before buying a new battery.

Do a *#*#4636#*#*
Look at Battery information
See if there is anything telling.

illru said:
Do a *#*#4636#*#*
Look at Battery information
See if there is anything telling.
Click to expand...
Click to collapse
Attached is what I see. Everything looks normal to me? Not sure what I should be expecting though.

When in doubt, frag out.. I mean BBS out..
Use betterbattery stats and it gives a lot more info and may help you pinpoint the issue..
Sent from my Nexus 4 using xda app-developers app

88nexus88 said:
Attached is what I see. Everything looks normal to me? Not sure what I should be expecting though.
Click to expand...
Click to collapse
94.64 degree fahrenheit for the battery. Is that high?
edit: Mine says 95 degrees

It seemed that google play services was sucking most of the juice, but this isn't always the case. I decided I was just going to go with flashing a new ROM, but even with USB debugging on and Connect as Media Device checked off in USB Computer Connection, I can't get my computer to recognize my phone via USB. I've tried this with two different cords, multiple ports on my computer, and even with a friend's computer. I'm starting to think my phone has just completely **** itself. Any advice?

advocat3 said:
94.64 degree fahrenheit for the battery. Is that high?
edit: Mine says 95 degrees
Click to expand...
Click to collapse
your body temperature averages 98.6F. keeping your phone off and in a tight pocket on a warm day could raise the temperature to 95F. so, is 95F high?

Got exactly the same problem, already replaced the battery, but that wasn't the problem. Can t RMA because I'm not on the country Where it has been bought, so I'm really with my hands tied in here.
I already thought it could be the Qualcomm Power manager (IIRC) that is damaged, but that chip is soldered onto the mainboard..
Sent from my Nexus 4 using Tapatalk 4

Edit/Update: Phone completely **** out today, won't turn on, and only displays a solid red LED light for ~60 seconds after plugging into a wall charger. Good thing it's in warranty I guess.

88nexus88 said:
Edit/Update: Phone completely **** out today, won't turn on, and only displays a solid red LED light for ~60 seconds after plugging into a wall charger. Good thing it's in warranty I guess.
Click to expand...
Click to collapse
ohhhh holy crap...
Dont worry. just charge your mobile for atleast 8 hrs and then switch it on.