Develop Bugs

[Q] Odd Battery Charge Curve

hi all,
i noticed the charge curve on my evo is not linear. at first it's logarithmic and then linear (see pic). everything is off (3g/4g, wifi, bluetooth, sync) while charging (only turning on once in a while to check the %). is this normal?
ive wiped my battery stats and done all that. during use, the battery drops to 60% quickly and then discharges slower. im using deck's gb 1.3 rom, havent changed the kernel, no wake lock issues as far as i can tell.
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I was having the same exact issue. I bought a new battery and figured it must be bad when it would jump from 80 percent to full in a matter of minutes. Then it would discharge to around 70 percent in a matter of an hour. After it hit 70 percent it would discharge more slowly. This was a battery that the Sprint store gave me and I was led to believe it was new. After it did this weird charging discharging issue I went back to sprint and this time received a brand new battery in the package. The young lady behind the counter showed me a box full of all types of used batteries and explained they probably pulled one out of the box of the used batteries. I exchanged my original battery because it wasn't fully charging anymore but the weird charging spike I got with the replacement battery was a first for me. Anyway the "NEW" battery is working like it should so you may be looking at a bad battery.

I know you said you wiped battery stats but did you calibrate the battery at all?

oop. forgot all about this post. thanks for your responses.
i assumed something weird may have happened from my going stock to root so i checked out a friends battery. he never rooted his phone. unfortunately i get the same charge curve.
yes, i have calibrated my battery/ ie, charge to full, wipe stats, then drain phone til shut off.
i will try contacting sprint/htc for a new battery and see how that goes.
anyone else have this issue?

Me, all the time. Have yet to have a different curve ever. Mine happens a little higher though, around 70%. Try battery monitor widget and you can see the actual charging voltage
Sent from my PC36100 using XDA App

I use SetCPU with 3500mAh battery and last 28hrs on single charge
Sent from my PC36100 using XDA App

plobukt said:
oop. forgot all about this post. thanks for your responses.
i assumed something weird may have happened from my going stock to root so i checked out a friends battery. he never rooted his phone. unfortunately i get the same charge curve.
yes, i have calibrated my battery/ ie, charge to full, wipe stats, then drain phone til shut off.
i will try contacting sprint/htc for a new battery and see how that goes.
anyone else have this issue?
Click to expand...
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After you drain the battery completely, charge it to 100% without unplugging. Recalibrate with that method and see if it helps.
Supersonic Evo 4G | MIUI | Tapatalk

Battery jumping

Good day everyone, I've been using CM9 for awhile now and its been an awesome ride so far. Everythings been working almost perfectly. Recently, my batteries(stock one) percentage level's been Jumping up and down...a lot. For instance, I woke up to it (while off) having 100% on the indicator, turned it on, and it dropped to 51%, re-booted it to see if that'd help but it dropped again to 12%. This kindof things been happening for awhile and still with Alpha 2. Should I just get a replacement from sprint? Or is there a workaround.
Also, Music's apparently been taking up to as much as 40% of my battery usage even though If don't even have it activated at the moment. I've tried deleting the apk but it appears com.android..., I may just be being a noob, but any help?
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Sent from my SPH-D700 using xda premium

Jump" is typical when you don't power off completely and then power back on no work around other than turn it off leave the battery out for like 3 or 4 minutes and power it back up
Sent From My SPH-D700 Running Android 4.0 :sly:

Try an app called bloat freezer or paid version of Titanium Backup and freeze music.
Sent from my SPH-D700 using XDA App

Have you tried calibrating ur battery? Give that a try and see if that doesn't stop it completely.
Sent from my O.G. SuperCyan using XDA Premium....

CASHVILLEBOS said:
Have you tried calibrating ur battery? Give that a try and see if that doesn't stop it completely.
Sent from my O.G. SuperCyan using XDA Premium....
Click to expand...
Click to collapse
Apparently calibrating the battery according to some Android Engineer does nothing. The percentage you have left is directly related to the voltage of the battery. So if you are at 3.95 volts, that roughly corresponds to 50% with a range of 3.7 to 4.2 Volts on the battery. What the OP saw is the bbb...battery boot bug. If you are rebooting and you are lower than 70% do it while plugged into something. If it does happen as Biggie stated, simply remove the battery for a couple of minutes and reboot. It is a false report to the phone.

This has almost always been a issue for me when I flash anything new. It stays that way for until I deplete the battery, connect and leave connected til 100%, deplete the battery and follow the same process for about 3 full cycles and then all is well! Leaving battery out for a breather sometimes helps but I installed an app that has a widget and it keeps the regulating kinda monitered so I can be a little more at ease. Will post directly after this. But I also noticed that there have been times when the readout was a very low battery red [but I knew couldn't be true] and after I put it in airplane mode and didn't bother it for 5-10 minutes when I looked back again, battery would be yellow almost back to showing good and my battery stats show the levels increased. I think cm9 can't handle too much at one time anyways
Edit: that app I think is called battery info. Its pretty simple =) hope it helps! L8rz
Edit2: that app is listed in market as battery widget not battery info
Sent from justlovejoy's Epic 4g powered by The GreenRomProject.com & SpinBackEntertainment.com
Let's Go NYG!!!! 2012 beitchz!

Battery Drains when not in use/sleep

Am I in need a new battery? Which ever ROM I use this happens.

Need a little bit more information then that in order to help
Sent from my R800x using XDA

Left the phone idle after I pulled the charger. Came back and it's already below 90% (87) I haven't used any apps,as you see only the usual stuff show up.
droidjunkie said:
Need a little bit more information then that in order to help
Sent from my R800x using XDA
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Researched a bit and heard cell standby could be the issue,are mine normal? Can't tell.

How long was it off the charger for? Also I would be more worried about wifi, if your actually using wifi then yeah leave it turned on but if you're letting the phone just sit there I would try turning it off but I don't user wifi so I'm not sure. You can also try turning the brightness settings down.other then that it looks normal to me.
Sent from my R800x using XDA

Brightness is always below 50%,I keep around 25%.
So 2 hours off the charger,wifi on and idle,87% is normal? Everytime I turn it on just to check the battery it drops 2%, I don't think that's normal.

Honestly that's probably normal if you were away for an hour or so or if you left wifi on. Battery life also depends on which kernel you're using as well.

Solar.Plexus said:
Honestly that's probably normal if you were away for an hour or so or if you left wifi on. Battery life also depends on which kernel you're using as well.
Click to expand...
Click to collapse
I'm using DooMKernel v14

Installed Juice Defender, did some tests and just after I unplug, it took a while to go down to 99% took 10 minutes while watching YouTube on 3G but as it got down to 95 % the battery just drains quickly , went to 85% in 5 minutes while browsing the web
Sent from my R800i using Tapatalk 2

i noticed the same thing
i lost my old charger so i bought a new one and thats when i first started having this issue.
phone would seem to charge faster than before but died faster as well when using this charger. (this was my work charger). at home i use laptop to charge and takes longer but lasts longer.
also noticed phone got warmer when charging at work. so i returned that charger and got a different one and problem solved.
so if your using a different charger recently a new one may help

WiFi seems the culprit. Maybe Google how to set the wifi scanning interval
Sent from my Xperia Play using Tapatalk 2

I'll try a different charger. The phone does get hot when plugged in.

Better Battery stats.
I'll bet one of your apps (a wifi app) isnt sleeping, and thats why you are losing the battery.

Galaxy Nexus Battery Random Shutown with Charge Remaining

I recently broke my Galaxy Nexus screen and immediately bought a new Galaxy Nexus (HSPA+) but I'm facing critical battery issues with the new phone.
Using the stock charger and cable, I charge the phone completely and plug it out after the charger indicates Charged (this takes 2-3 hours to fully charge). But many times I have noticed that the phone dies with 30%-40%-50%-60% charge still remaining. When I try to switch the phone back on it won't come on until I pull out the battery, put it back in and charge it for sometime. Then when the phone starts the battery indicator shows 0% and starts charging again.
Is this a problem with the Phone, Software, or the battery? My previous nexus had no such issues even after updating to Jelly Bean. Please help!
Phone - Galaxy Nexus HSPA+
OS - Stock Jelly Bean - 4.1.1 Takju (Flashed the Factory Image using Efrant's method and did a complete wipe/reset)
Manufacturing Date - July 2012

Here is a Screenshot to indicate what I mean.
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Can you record what voltage your battery reads right before this happens? We need that data. Seems like you may have bad battery.

I don't think it's software since nobody had that problem... battery is most likely the problem IMO.
Sent from my Galaxy Nexus using xda app-developers app

Please tell me how t record the Voltage Data and I'll definitely do it. Thanks
RogerPodacter said:
Can you record what voltage your battery reads right before this happens? We need that data. Seems like you may have bad battery.
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Best guess, it's the battery. Do you still have the battery from your old phone?

Battery not fully charging but showing 100%
ok , I just bought Gnex few days ago and quickly updated its stock 4.0.4 rom to 4.1
now I have problem with battery, I charge it 100% but its a fake charge and i think its not charging more that 50% or so,
when it reaches below 30% screen starts flickering for few seconds and phone goes off, battery is drained!
as you can see in attached screen shot, I put it in charge, for 10 minutes, unplug the charger and turned phone on, it says 54% charged!! in 10 minutes!! I gave it hard work like flash light and playing clips, battery lasts only for 10 minutes, so that 54% is fake...
what to do pls??

I've had this exact same issue twice - just now in fact which is why I searched XDA. Phone needs a battery pull when it switches off at 30%. Never had it on ICS, now on Jelly Bean. Interesting that other people have had it too, but slightly concerning...

Did an experiment. After the fail, charged up to 39%. The battery is now showing no discharge with usage. An unvarying 3833mV according to Battery Monitor Widget Pro, and 'flat lining' on the battery usage graph. So either the battery is misreporting the voltage or the system is bugged reading it. Either way it explains why the OPs graph flatlined too. Any ideas anyone? I'm thinking a fresh ROM install is the next step...

?
any news?
Im posting here too : http://code.google.com/p/android/is...s Owner Summary Stars&groupby=&sort=&id=23789

I bought a new battery today and I'm just in the process of charging it. Hopefully this will let us narrow down the fault to either the battery or Jelly Bean in general. But I must add that Jelly Bean is a buggy mess, look at the bug on this link http://forum.xda-developers.com/showthread.php?t=1768750 for example!

I can confirm that this is a Jelly Bean software issue. . After installing the new battery the same behavior occurred again.. I wonder if newer builds of Jelly Bean have resolved this issue..

wessonster said:
I can confirm that this is a Jelly Bean software issue. . After installing the new battery the same behavior occurred again.. I wonder if newer builds of Jelly Bean have resolved this issue..
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Click to collapse
I'm with 4.2 and facing the same problem. Did you find a solution?

Battery life issue?

Hi,
So my phone battery was pretty off today and I checked my battery usage. This is the result.
Any ideas? It doesn't look like anything out of the ordinary on running apps...
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Sent from my Galaxy Nexus using Tapatalk 2

are you running stock?
are you rooted?
If you have recently flashed a new ROM, its common for the battery % to get thrown off. There are battery calibration apps on the market to fix it.
If you are running stock, then charge it for a full 8 hours minimum. Run it all the way dead, til it turns off. Then charge it a full 8 hours again.

rudeguy said:
are you running stock?
are you rooted?
If you have recently flashed a new ROM, its common for the battery % to get thrown off. There are battery calibration apps on the market to fix it.
If you are running stock, then charge it for a full 8 hours minimum. Run it all the way dead, til it turns off. Then charge it a full 8 hours again.
Click to expand...
Click to collapse
Negative ghostrider. The battery calibration apps are 100℅ snake oil. They do nothing that unplugging the phone after a charge does not do. Also, wiping battery starts after flashing a rom is pointless since it not only has nothing at all to do with indication, but that is also a clean slate when flashed. The old advice to do this was based upon folds not understanding how both the operating system and the battery's fuel gauge operate.
Also, I wouldn't advise doing the second one too often as it shortens the life of the battery. Discharge to the point of shutdown is unhealthy for it and full charge/discharge cycles shorten its serviceable lifespan.
OP- It would seem that your phone is awake significantly more than it should be if you weren't using it all that much. Google Services should account for less battery use than it is, and idle should account for more. A screenshot of battery use with more details would prover to be very useful. Also, you can use the app BetterBatteryStats to get some insight as to what may or may not be misbehaving.
Sent from my Nexus 7 using Tapatalk HD

I've flashed CM 10.1, using the 28th of December nightly.
Hoping it was just the nightly that caused it, but it's gotten worse throughout the day.

Aerolith514 said:
I've flashed CM 10.1, using the 28th of December nightly.
Hoping it was just the nightly that caused it, but it's gotten worse throughout the day.
Click to expand...
Click to collapse
My best guess is that it may be location services draining your battery.
Sent from my Nexus 7 using Tapatalk HD

najaboy said:
My best guess is that it may be location services draining your battery.
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
Just disabled it in maps. Is it possible that it turned itself on somehow? I haven't had this problem until today.
Also, would there be a reason why the stock messaging app font size is almost double the size? I ended up installing the 'alex' font to make it a bit smaller, but it's still big in comparison to what it used to be.