When I first got my Captivate, the battery life was pretty good. I was able to get about 13 hours while only draining 10% of the battery in standby mode. However, I recently had the battery drain completely until the phone turned off by itself, and I recharged it to full while having the phone turned off.
I thought that would improve the battery life based on what I've read, but it hasn't. The battery life has gotten worse! Now, I only get a little more than 5.5 hours for 10% battery life in standby mode.
What should I do to get the battery performance back to where it was originally? Should I do another full cycle charge with the battery depleted and charging it while the phone is off? Or should I let the battery get close to depleted and charge it to full while leaving the phone on? What's the correct process for cycle charging?
BTW, I'm not rooted, and everything is stock with the exception of LauncherPro. But I was already using LauncherPro when the battery life was good.
Hey all,
I have had terrible misfortune in the realm of battery stats. Ever since CM7 (and maybe even before) my phone is unable to figure out how much battery is left. Here is a common scenario:
Charge phone overnight, use phone throughout day, battery dies after 6-7 hours of moderate-heavy usage. I plug it in, reboot, and then it reports ~60% battery left.
Another common scenario is that it will dwindle around 5% battery or less and go up and down until it finally dies.
I know that this is a misreading of the battery and not battery drain or a rogue app because when I flash a new ROM the battery life is amazing for 1 day. The day after I flashed Team Hacksung's ICS rom, I got almost 17 hours of battery life with 2.75 hours of the display being on and 30 minutes of Google Music. I was blown away! But even then it was dwindling around 5% not knowing when it would actually run out. The day after, it was back to its old tricks of misreporting the battery percentage.
Today I charged it to 100%, unplugged it, and shut it off. Then I plugged it in while it was off and let it charge to 100% again and wiped battery stats in Clockwork mod. I'm getting ok-ish battery with that, but it's not even close to how good it was when I first flashed ICS.
Anyone have any ideas what I could try?
Thanks!
When you wiped the battery stats did you let the battery fully discharge and shut off before charging again?
After wiping battery stats it is recommended to let the phone fully discharge to the point where it will automatically shut off.
Keep in mind with the age of our phones, it could just mean your battery is dying. Try the above method, but in my experience uncalibrated battery only last a few days. The phone will "fix" it by itself the longer you use it.
j.curtis.369 said:
When you wiped the battery stats did you let the battery fully discharge and shut off before charging again?
After wiping battery stats it is recommended to let the phone fully discharge to the point where it will automatically shut off.
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Click to collapse
That's what I'm doing currently. Battery life seems improved, but we'll see what happens. It's nearing death now, ~6%. At this point it will probably misreport it for a few hours until it finally dies. I left it unplugged overnight, so now it's at 19.5 hours uptime with 1.75 hours display time.
Definitely improving! I hope that it successfully recalibrates.
Battery stats have nothing to do with how the os calculates remaining battery...they are what is displayed in settings>about phone> battery use and are reset each time you charge to full.
You're just giving it a good bump charge...wiping the stats is just a placebo effect.
studacris said:
Battery stats have nothing to do with how the os calculates remaining battery...they are what is displayed in settings>about phone> battery use and are reset each time you charge to full.
You're just giving it a good bump charge...wiping the stats is just a placebo effect.
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Seriously? Wow I didn't know that. Is there a way to actually reset how the OS calculates the battery?
Does this app do anything?
https://market.android.com/details?...xLDEsImNvbS5uZW1hLmJhdHRlcnljYWxpYnJhdGlvbiJd
Nope...that app is just perpetuating the myth of what the batterystats.bin file does.
Don't hate me for this but, Then how come Roms usually give me better battery life after a full cycle? not bump charging or deleting battery.bin just running it?
Because the system for tracking the remaining power is getting to know your battery. once it gets a feel for it, it's more accurate. In theory anyway
So the "give it a day" is still true, at least in theory?
Sure
10 char
battery gauge temporarily fixed by removal and replacement of battery
Ever since I rooted my phone, I've noticed that the battery gauge/meter is way off. I keep an eye on the charging voltage and try to pull the plug around 3.92 volts. Problem is, the gauge is always reading low until I pull the battery, wait a few minutes, and then reinsert and boot up. Then it's fine for a while, but I notice it creeping down even though I keep topping it off with a charge to keep it around 3.92 volts.
What's going on? Do I have to fully deplete the battery and charge to full to have an accurate (or somewhat accurate) battery gauge? Do I have a bad battery (this battery has been used only a couple months)? Is something else going on here? Recommendations, studacris? Doesn't the os use battery voltage to calculate state of charge (%)?
my note is draning 1 percent every 10 minutes
when in standby
after downloading cpu spy i discovered that deep sleep was 1% and 200MHZ was 84%
it has something to do with it?
also in battery usage
android os is 57%
any fix?
by the way
im running ics stunner rom
The Note's battery is a POS... If you want to partially solve it you'll have to keep both wifi and data off.
i kind of found a way now deep sleep is on
but what do you mean POS
Have you changed anything in the last days? Installed any suspicious apps, or changed any settings?
If you found the problem now, then maybe you can also calibrate your battery just in case it "lost" some performance. To be sure!
Use Battery calibration or wipe Battery stats in Recovery, Anvanced menu (after you fully charged your device).
Hi, our bafteries should have 3,8V. Battery monitor shows my battery has 3,804V, sometimes 3,9V. My battery drain is about 30% per hour. When I'm writing this post, my battery lost 6%. I think the voltage is the problem. This is battery issue, hardware issue or maybe this is normal ? I'm using newest NamelessROM. Thanks for the answers.
After I flashed latest firmware my device booted and then suddenly turned off and battery dropped to 2%.
Any solution for this? Is my battery dead?
same for me, happened once from 60% to 6%
try to calibrate your battery
as for me, I'm using L-Speed for calibrating. No problem so far.
If still happen, then maybe your battery is damage
TheWolfSVK said:
After I flashed latest firmware my device booted and then suddenly turned off and battery dropped to 2%.
Any solution for this? Is my battery dead?
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Click to collapse
Sometimes battery drops suddenly. Charge it again and see how fast it charges. If it charges completely in few minutes then battery is fine. Also about the calibration. I really don't think you need battery calibration if you are using latest custom roms. It updates battery stats itself on rebooting.