so why exactly am i losing battery life on a reboot. its happening on every rom ive used so far.
I think its because your battery is not properly calibrated with the rom. Are you bump charging each new rom you put on and wiping the battery stats?
This happens to me. I am stock currently, but I have been through two phones and they both lost 5 - 10% on reboot.
It's normal for the phone, it takes a bit to "power" up the phone. Don't stress out that much over it. The battery % isn't 100% accurate anyway.
I'm losing ~10% on each reboot too. Its definitely not just from the reboot and I don't think its accurate. Yesterday, as an example, I was at 43%, rebooted and came up at 32%. Then my phone sat 32% forever, just flat lined in the battery stats for hours. It finally started reasonably dropping again hours and hours later as if the battery level had finally caught up with what was being reported.
Have you ever bump charged and battery wipe stats before?
Cuz mmy battery doesn't drop like that.
I don't think I lose a full 10%, but I definitely notice a significant, if not excessive battery drop when rebooting. It seems unlikely that the battery could have discharged that much, so it's probably a reporting issue. Not something that really bothers me, but just pointing out that I noticed it as well.
IDroidThere4Iam said:
I'm losing ~10% on each reboot too. Its definitely not just from the reboot and I don't think its accurate. Yesterday, as an example, I was at 43%, rebooted and came up at 32%. Then my phone sat 32% forever, just flat lined in the battery stats for hours. It finally started reasonably dropping again hours and hours later as if the battery level had finally caught up with what was being reported.
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Click to collapse
This was similar to what I experience. More evidence that it is a mostly harmless reporting error. The reporting "corrects" itself once the phone is booted. Interesting behavior, but harmless.
Download Battery Calibration from the Market.
Sent from my ADR6400L using XDA Premium App
Your battery gague isn't telling you the truth.
I don't even get a 100% charge. It sits at 97 for like 3 hours and then drops. Reboot usually only takes <5 for me though. I'm thinking ROM issue.
Sent from my robot vacuum smartphone using black magic and goat blood
funkybside said:
Your battery gague isn't telling you the truth.
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This really explains why you drop rapidly after unplugging your pone from charging to "100%". I believe the OP is referring to a step function-like decrease in battery level between reboots. That is what I'm referring to anyways. That link does have some interesting info though.
I've been having the same issue. Reboot sometimes drops the battery by 5%, and the battery gauge seems to get stuck after that. I've also noticed that sometimes if I reboot while it's charging, the % will jump something ridiculous like 20%. Just now, it was at 45% while charging, I rebooted, and now it's at 57%.
This has been happening on both BAMF and CM7, though I've always been using Imoseyon's kernels.
Same problem here. Bump charge and battery stat wipe is the fix but it's definitely a pain. Especially, since I am flashing a new rom everyday.
to bump charge does my phone have to be off or when it reaches 100 unplug and plug a few times? will that do. i hate having to shut the phone off especially for a number of hours.
Bump charge> charge the phone on till light turns green. > turn phone off> charge phone until light turns green> unplug and reconnect several times> boot into recovery> wipe battery stats. > done. Use the phone all day and let it die on that charge. Then charge over night turned on. And you are now calibrated.
magicriggs said:
Bump charge> charge the phone on till light turns green. > turn phone off> charge phone until light turns green> unplug and reconnect several times> boot into recovery> wipe battery stats. > done. Use the phone all day and let it die on that charge. Then charge over night turned on. And you are now calibrated.
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Damnit, I always forget that last step
qman66 said:
so why exactly am i losing battery life on a reboot. its happening on every rom ive used so far.
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because rebooting entails the re-starting of operating system, services, background apps, internet connectivity, and initial data sync. it's just the nature of restarting an operating system.
lect1984 said:
because rebooting entails the re-starting of operating system, services, background apps, internet connectivity, and initial data sync. it's just the nature of restarting an operating system.
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I think the question was meant to be something like, "why do I lose 5-10% of my battery after a reboot?" Of course rebooting using a little power, but that's not the issue here.
johnclevenger said:
I think the question was meant to be something like, "why do I lose 5-10% of my battery after a reboot?" Of course rebooting using a little power, but that's not the issue here.
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Because the battery gauge isn't reading it right. Solution. Bump charge and battery wipe stats.
Related
Is this normal. I did try and do a search in my defence.
Yes. It is like that by design. It stops charging at around 95-98%. Its to prevent you from overcharging the battery.
Sent from my Nexus S using XDA App
This is a known issue. You can try and reset battery stats in cwm when your battery is charged and/or emptied. It works for some and not for others. I haven't noticed my battery lasting any less when my battery doesn't "charge" past 97%
There have been some discussion on this. I get about 97% myself. From what I've read you may get full charge if you let it drain all the way. I don't do that myself. Very happy with battery life as is.
I used to get 100% before I switched to the Vegan rom.
Sent from my G-Tablet running Vega-Nb5.1
Mrhorology said:
Is this normal. I did try and do a search in my defence.
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Click to collapse
Either let it drain until it shuts off a few times and then charge it all the way up or if that doesn't work, use CWM to delete the battery stats when it's at 95% (full, with a GREEN light - not charging, with a red light) and then let it drain until it shuts off on it's own.
I did this a long time ago (delete the stats) and it's been perfect since. Charges to 100% and does indeed show battery at almost empty before it shuts off.
Good Luck.
Still no go here but it can get tom 96%... lol
I am sitting a 98% with VEGAn.
I am now having an issue where u can use the device, then I turn it off, and
turn it on the next morning and see about 5 to 10% of my battery was drained.
Confirmed Fix
Confirmed fix for me on Vegan 5.1. Letting battery drain down to zero and shutoff the tablet... reached 100% on next charge. Now the indicator charges to 100% every time.
tried this and still no luck . still get to 95-6% bugger
Vegan here..this is how I fixed it:
1) Drain it till it shuts off, try restarting it a few time to make sure its dead.
2) Once dead, plug it in, boot into clockworkx, and reset battery status (do this quickly)
3) restart, and leave plugged in idling till fully charged
4) use and enjoy a accurate battery level!!
-Red
Mrhorology said:
I am now having an issue where u can use the device, then I turn it off, and
turn it on the next morning and see about 5 to 10% of my battery was drained.
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Click to collapse
You have to remember that in order to install some apps out there, you have to give them permission to use the internet and to interact with your device autonomously. I have found a few apps that were pulling my tablet out of sleep mode and turning on the wireless to download ads or other updates, and that (along with the length of time to shut back down) was affecting my battery life.
I would say to go back and review what you've installed, and to also check your screen timeout settings. Just doing that saved me quite a bit of overnight battery loss.
BigJohn
I have done bump charging and everything I can think of to get my battery to top off at 100% when I remove it from a power source. Every single time though it drops to anywhere from 95-97% within a minute.
Do I need to clear the battery stats and hope for the best? Do I need to request a new battery from Verizon?
Also, to clear battery stats do I need to run the phone down to nearly dead, clear stats, then charge it up? I have conflicting info on when to clear or if it's even a wise idea on the Thunderbolt.
htowngator said:
Also, to clear battery stats do I need to run the phone down to nearly dead, clear stats, then charge it up? I have conflicting info on when to clear or if it's even a wise idea on the Thunderbolt.
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I've been wondering about this as well. Good question
I always turn the phone off, charge to 100% then boot and immediately clear stats. After that let it drain till dead. I like to let it charge back up all the way with the phone off. Then use it normally. Always worked for me.
Sent from my Thunderbolt
ajd88 said:
I always turn the phone off, charge to 100% then boot and immediately clear stats. After that let it drain till dead. I like to let it charge back up all the way with the phone off. Then use it normally. Always worked for me.
Sent from my Thunderbolt
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I've only cleared stats once but this is the process I used. Seemed to work well.
htowngator said:
I have done bump charging and everything I can think of to get my battery to top off at 100% when I remove it from a power source. Every single time though it drops to anywhere from 95-97% within a minute.
Do I need to clear the battery stats and hope for the best? Do I need to request a new battery from Verizon?
Also, to clear battery stats do I need to run the phone down to nearly dead, clear stats, then charge it up? I have conflicting info on when to clear or if it's even a wise idea on the Thunderbolt.
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Click to collapse
If you leave it on the charger for an extended period of time it will always drop off a few percent rather quickly. A new battery will not fix that. From what I understand it is a feature that helps prevent overcharging. As for battery stats I only clear them if I switch from a standard to an extended battery or sometimes if you flash a ROM when not already charged to 100% and notice the battery has gotten worse.
dirtyfingers said:
If you leave it on the charger for an extended period of time it will always drop off a few percent rather quickly. A new battery will not fix that. From what I understand it is a feature that helps prevent overcharging. As for battery stats I only clear them if I switch from a standard to an extended battery or sometimes if you flash a ROM when not already charged to 100% and notice the battery has gotten worse.
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Click to collapse
This. The battery charges to full and then will stop charging to prevent overcharging. Also it's good practice as said above to clear stats after loading a new ROM or switching out batteries.
There is an app on the market called battery calibration which walks you through step by step the proper way to calibrate it. Obviously you have to be rooted but you can clear stats without having to reboot into recovery. Of course you can run the new Das Bamf rom with their toolkit which also has a clear battery stats option in it.
What I do in the mornings when I wake up after charging all night, is reboot and continue to let it charge until I walk out the door.
sent from a sweet paper weight.
This thread: http://forum.xda-developers.com/showthread.php?t=871051 explains why this happens.
Basically the battery meter is lying to you when it says 100% right when you take it off the charger, it's actually a couple percentage points below 100%. This is because keeping the phone at 100% while on the charger shortens the battery life.
So basically don't worry it's normal.
Everyone: I know why it happens and that it's normal.
I am talking about why after I do a bump charge and keep recharging it to 100% (i.e. take it off power, let it dip to 95%, put it back on power, charge till green). After it immediately goes green I pull it off and less than a minute later it's down to 96 or 97%, for example.
Last night I left the house with about 40% left on my battery. By the time I went home, my Sensation was completely drained. This was within 3 hours, which should not drain it to 0%, especially since it was asleep most of the time.
When I got home and I plugged it in, I booted it up and surprisingly, it booted up with 42%. Before plugging in it had no power left, and the phone wouldn't boot at all. I wiped my battery stats yesterday morning too, after charging it to 100% for a few hours.
Seems like my battery stats are VERY wrong right now, and I just wiped it again after charging it to 100% and leaving it there for a while. Does anyone else have this problem? I know some people are having random stats popping up here and there, but this still had 30% juice left before it just died out. Never happened before. I was able to nearly fully drain it just 3 days ago too (100-5%).
Charge to full, wipe again, and drain to about 5%. Charge full and repeat. It usually takes a few cycles to correct battery stats.
Sdobron said:
Charge to full, wipe again, and drain to about 5%. Charge full and repeat. It usually takes a few cycles to correct battery stats.
Click to expand...
Click to collapse
I'd also recommend this application from the market for battery calibration, although you need root.
ben_pyett said:
I'd also recommend this application from the market for battery calibration, although you need root.
Click to expand...
Click to collapse
Alright, thanks, I'll try that. Hopefully it gives me an accurate reading
Has anyone realized this or is it just me, every sense 3.5 that I've tried the battery indicator is incorrect.
For example, I just had 41% battery life before resetting my phone and now I have only 4%. Is it not charging the battery correctly? I also turn the phone off after it says 100% and then charge until the green led comes on but still it is either draining too fast and phone doesn't detect it until a reset or the battery isn't be charged completely because the rom thinks it's 100. I have caliibrated and erased the batterystats.bin file so many times and it's still the same. any insight on this? I have a brand new battery from htc as well.
Same problem
Constantly "calibrating" or deleting the battery stats is the exact reason this happens. You dont have to do that, regardless of what people say.
This will happen until the battery has been charged/discharged a few times and will slowly stop happening.
No issue here, got my new anker battery.. Flashed BP 2.1.5 and since then, my battery has been normal and amazing!
the_scotsman said:
Constantly "calibrating" or deleting the battery stats is the exact reason this happens. You dont have to do that, regardless of what people say.
This will happen until the battery has been charged/discharged a few times and will slowly stop happening.
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Click to collapse
This. When I flash ROMs I don't really do anything in relation to the battery. I just use my phone like normal. The first day or two you might get a little more drain than usual, but after that it will be completely normal and you don't have to do anything like wipe battery stats or calibrate or run it down to 5% and charge it all the way up or whatever.
Yes, constantly resetting battery stats is bad. Should only occur right after flashing the new ROM. Ideally you'll have charged your phone to 100%, flashed the new ROM, and immediately putting it through 5 discharge/charge cycles.
My battery life was horrendous when I didn't properly calibrate the battery. Going through the process now and its lasting a significantly longer time compared to not going through the process. I'm talking about getting like 6 hours of light usage compared to like 15.
Or it could be just ARHD. I really didn't like that ROM. Anyways, I'm running Bulletproof 2.1.5 with 3.5 Sense on an Anker battery and its doing great.
Sent from my HTC Sensation
nrvnqsrxk said:
I'm gonna have to disagree with you on that. My battery life was horrendous when I didn't properly calibrate the battery by going through at least 3 full discharge and charge cycles. Going through the process now and its lasting a significantly longer time compared to not going through the process. I'm talking about getting like 6 hours of light usage compared to like 15.
Sent from my HTC Sensation
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Click to collapse
+ 1 my battery was shocking, im on my second full cycle currently at 2% lol and already i've noticed improvements by like 20%
Sent from my CM7 Sensation XE using xda premium
I've done everything, calibrated the battery numerous times with and without wiping the batterystats.bin and it's still acting up. Say this morning I wake up, take the phone off charge at 100%, go out, and restart the phone for any reason when the phone's battery meter is at 95%, after the restart the meter will jump down to 70%.
This is with a new battery, new rom, totally wiped device, I even used the ruu to get me back to the stock rom.
Anyone have any idea what's the problem? The battery life is ****, and doesn't seem to get any better with calibration.
xdviper said:
I've done everything, calibrated the battery numerous times with and without wiping the batterystats.bin and it's still acting up. Say this morning I wake up, take the phone off charge at 100%, go out, and restart the phone for any reason when the phone's battery meter is at 95%, after the restart the meter will jump down to 70%.
This is with a new battery, new rom, totally wiped device, I even used the ruu to get me back to the stock rom.
Anyone have any idea what's the problem? The battery life is ****, and doesn't seem to get any better with calibration.
Click to expand...
Click to collapse
This is your culprit. Let it bed in a few days, and performance should stabilize.
Go through 5 full charges/discharges, uninterrupted. Yes, it's a pain in the ass, but you signed up for it when you flashed a new ROM.
Everytime you wipe your battery stats, you have to go through the 5 cycle process again. Uninterrupted.
EDIT: Had a lil too much rum and misspelled a few words. I even misspelled mispelled
Alright dude, I'm going to take you up on your word, I'll give you another update within 5 days.
This is a problem with all Sensation ROMs, even with S-On and Stock ROMs. I get a problem like this one too. If I have 60% left, and I restart the phone, it goes up to 69% and I don't know why. Also very slow charging from the original wall charger, but if I reboot when it's charging at 70-75%, when it finally boots, it says 100% charge. This must be some bug from HTC or something. :S
Hi,
Same problem (with Sense 3.0/Sence 3.5 and different ROM),but is there a fix for that?
I saw this:
Batt Jumping hopefully solved (Beta) = Done
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Click to collapse
The thread: http://forum.xda-developers.com/showthread.php?t=1287129 .
Probably a way to fix the issue?
Should be asked about this in the ROM thread?
Me too same bug since first day, I think it's a battery sensor fault
It's not a hardware fault...it's not a battery fault...it *may* be a ROM/kernel issue...but I suggest you give your battery a few discharge/charge cycles and you'll see it should go back to normal.
Title says it all... just restarted my phone to find the battery stats had dropped very significantly. thought it was a fluke so i went into recovery, deleted battery stats, and still the drop was present upon next restart.
not only that the other day i lost 30% overnight while it was powered off!!!
this is a fairly new anker battery.... it shouldnt go to crap overnight shouldt it? they have extremely high reviews!
this power drop during restart happened just after i had left the battery out of the phone all night!! Went in at the same power level as the night before, i used it some, restarted, and boom 22% missing...
just did another battery pull and it lost 3 more %. before this, this battery was perfect!! 1 random wakelock in about 6 months time. I dont get it. this is not a gradual degrading of battery, this is downright crap
Try calibrate the battery
Pawprints1986 said:
Title says it all... just restarted my phone to find the battery stats had dropped very significantly. thought it was a fluke so i went into recovery, deleted battery stats, and still the drop was present upon next restart.
not only that the other day i lost 30% overnight while it was powered off!!!
this is a fairly new anker battery.... it shouldnt go to crap overnight shouldt it? they have extremely high reviews!
this power drop during restart happened just after i had left the battery out of the phone all night!! Went in at the same power level as the night before, i used it some, restarted, and boom 22% missing...
just did another battery pull and it lost 3 more %. before this, this battery was perfect!! 1 random wakelock in about 6 months time. I dont get it. this is not a gradual degrading of battery, this is downright crap
Click to expand...
Click to collapse
Should take a titanium backup of apps. Move that folder to ext sd card and factory reset the device.
Problem must go away
Sent from my SM-G355H using XDA Free mobile app
Pawprints1986 said:
Title says it all... just restarted my phone to find the battery stats had dropped very significantly. thought it was a fluke so i went into recovery, deleted battery stats, and still the drop was present upon next restart.
not only that the other day i lost 30% overnight while it was powered off!!!
this is a fairly new anker battery.... it shouldnt go to crap overnight shouldt it? they have extremely high reviews!
this power drop during restart happened just after i had left the battery out of the phone all night!! Went in at the same power level as the night before, i used it some, restarted, and boom 22% missing...
just did another battery pull and it lost 3 more %. before this, this battery was perfect!! 1 random wakelock in about 6 months time. I dont get it. this is not a gradual degrading of battery, this is downright crap
Click to expand...
Click to collapse
Probably it was 22% lower the whole time but it was displaying incorrectly. Try calibrating the battery.
Already tried this... Just had it lose 30% again... A program froze and I had to manually restart (hold power button down), went from 60-33%... It was only frozen for about 30 seconds... This battery is only less than 6 months old. I just gave it a full drain until power off, and then a full uninterrupted charge while powered off like everywhere suggests.... And it's still messed.
What else could be wrong?!
With the initial restart it wasn't even a freeze, it was a restart from the power menu... Any battery app I have just reads from the phones main power meter, not it's own...
This is so frustrating...
Eta: why would a factory reset of software fix an external hardware problem? Plus I just reset a couple of months ago, it's really not that old and bogged down of a system....
Bad battery. Let it run all the way down to it dies. Then charge it all the way too 100 the. Turn on the phone and keep it on the charger for an hour and then run like you normally do and see that helps. I do this with all my phone and it works you should do it once a month to keep it healthy .
Have your battery tested to see if it is a bad one. Is it swollen at all even a lil bit?
pantherdaddy27 said:
Bad battery. Let it run all the way down to it dies. Then charge it all the way too 100 the. Turn on the phone and keep it on the charger for an hour and then run like you normally do and see that helps. I do this with all my phone and it works you should do it once a month to keep it healthy .
Have your battery tested to see if it is a bad one. Is it swollen at all even a lil bit?
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Click to collapse
Wipe data/cache/dalvek cache amd flash stock rom again.
May be this helps
Sent from my LG-X160 using XDA Free mobile app