[Q] When does a Wipe Battery Stats need to be done? - Droid Eris Q&A, Help & Troubleshooting

I know, when you replace a battery
But my question really revolves more around changing ROMS. Are there enough differences between ROMS that would make a battery wipe necessary when changing ROMS to ensure accurate reporting of the battery level?

I'm wanting to know the same thing to... And I need someone to tell me how to do a battery wipe correctly.. Because I've heard of multiple ways of doing it.. I.e. Doing it at 100% battery then letting it die out.. Then I've heard to do it when your battery is at like 5% then charge to 100%...

thisisreallygay said:
I'm wanting to know the same thing to... And I need someone to tell me how to do a battery wipe correctly.. Because I've heard of multiple ways of doing it.. I.e. Doing it at 100% battery then letting it die out.. Then I've heard to do it when your battery is at like 5% then charge to 100%...
Click to expand...
Click to collapse
I'm in the process of Method 1...I think I picked that up one of the Cyanogen-based ROM threads, saying it was necessary to do that to get an accurate battery status with the new ROM.
Hence my question...when is it necessary and what is the correct procedure?

I did method 1 of my post and it has seemed like it has helped my battery tremendously... From what I've heard it's necessary after flashing a new ROM. And I can't remember who.. But I think it was tazz that informed people about method one. Don't quote me on that though haha.

i usually do one if i notice ****ty battery life and all you need to do is let battery drain then after a good charge wipe your batt stat in recovery, atleast i notice a difference when done this way....

I'm doing method 1 now, trying to get the juice down but its stuck on 9% left. Hmm, making me think there is some truth to this. Not that I'd doubt a dev .... (Taz )
Sent from my FroyoEris using Tapatalk

I don't know what's the most effective and efficient but I When I do it I let the battery fully die then boot it into recovery real quick, do the wipe then power down and charge.when it's finished charging I power on and use til it's fully dead, then charge fully again while powered down.
I've had real good battery life running conaps CELB 1.6 and 1.7.1
Sent from my ERIS using XDA App

Related

HOW TO: Solve Battery Life Issues

***NOTICE***
The ROM Manager version of CWM does NOT wipe battery stats properly, as with many other things. What you need is jt1134's version of CWM that is all happy and works and stuff.
You can find his happy CWM here. And here. And also here.
And here.
Big thanks to LegionTHEFecalExcretion for the heads up on that.
***END NOTICE***
NOTE: On current DL30 and EB01 ROMs, you will not see battery life like you did on DL09 with undervolted kernels. There are NO undervolted kernels as of yet, everything kernel wise with Froyo ROMs in very much stock. These steps will improve your battery life in comparison to when you flashed Froyo, but you are not going to see spectacular changes in battery life up to what you were getting with undervolted DL09, etc. It's just not possible until we get undervolted kernels and Froyo matures for our device, development wise.
Hi everyone, I've been seeing a lot of threads about bad battery life, whether switching to Kaoscinate, Vanilla, or DL30. Stop it! Just kidding. There is a simple process everyone should follow when switching between different enough ROMs, like AOSP, CM6 and TW Eclair and Froyo. This is how you retrain your battery.
1. Charge your battery to 100% (when it gets there, let it SIT there, your phone is NOT reporting correctly).
2. Reboot to Recovery and Advanced -> Wipe Battery Stats.
3. Reboot, and use your phone until it is VERY low (5-10%, you can let it die if you want).
4. Charge your phone back to 100%
5. (Optional) Power down, then power on phone. (Thanks goes to BrwnSuperman for this suggestion, give it a try!)
Your battery issues should be solved. This needs to be done every once in a while, especially when switching between different ROMs and OS versions.
User dalrym05 posted this alternate method for retraining the battery on page 4 as well, so I thought I would share it here in the OP. I'm posting this as a USE AT YOUR OWN RISK method, as I have not tested it, and am not quite sure what the *228 steps for it actually accomplish and have to do with retraining the OS battery reporting, so I'm leaving it quoted to dalrym05 for the time being.
dalrym05 said:
Here were my steps to better battery.
1.*228 option 1
2.*228 option 2
3. Run battery completely dead to 0%
4. Plug in and boot immediately into cwm
5. Wipe battery stats and dalvik cache
6. Reboot and let charge fully before unplugging
7. Completely discharge again and fully charge again.
After this you should notice a very nice increase in battery as I did. My battery life is back up to par with eclair.
Click to expand...
Click to collapse
NOTE: I did edit his post to make it a little more clear. I'm slightly anal retentive that way.
HybridByNature had an excellent suggestion on page 4. If people have good tips and tricks for maintaining good battery life, and they are easily reproducible, then I will gladly add them to the OP here. What works for you?
HybridByNature said:
This might also be a good place to add tips & tricks to extending battery life.
IE
-Close programs that you aren't using.
-Don't leave your camera or navigation running in the background.
-Turn off WiFi & GPS etc when you aren't using them.
-Don't run your screen at full brightness if you can help it.
-Figure out what uses more battery life than other things:
Pandora, internet browsing, downloading, camera/camcorder, Angry Birds etc.
If you are rooted, try and narrow it down to the best kernel/theme for your situation. I've found that I have better battery with a non-voodoo kernel but the performance increase is worth it so that's a trade-off that I make.
Let's hear from our readers: What is working for you?
Click to expand...
Click to collapse
Would not surprise me if this is all it is. I have turned my phone off at 5% for an hour and turned it back on without charging and then it showed 45%. I know when batteries are low letting them sit a little bit can help, but not that much.
It is just being reported inaccurately by the OS.
This how to has been reposted like 9001 times. But yes, this is one day to do it.
Syn Ack said:
This how to has been reposted like 9001 times. But yes, this is one day to do it.
Click to expand...
Click to collapse
Yes, but not as a thread, it gets posted in everyone else's "Why does my battery life suck ass" threads, so I made this so maybe people would see it and try it before posting another useless question thread in Development.
Definitely works though. Did it yesterday. Good post. It has been posted in other threads ... but I think we all know people don't read through everything very often.
Sent from my SCH-I500 using XDA App
I have the battery charger and 3 batteries, I always run my battery low and leave it in the charger for a day.
I did this last night and it didn't work too well for me.
Also, when I go to wipe battery stats in the recovery, it doesn't tell me if it wiped or not, just goes back to the advanced menu.
And also, should I be concerned that when I cold boot into the recovery, it doesn't appear to be CWM? It says Android recovery...I know I have CWM recovery installed.
Samerhing happens to me... and I just took it off the charger and I'm on 96 percent in less than 1 min
Sent from my SCH-I500 using XDA App
miguel11691 said:
Samerhing happens to me... and I just took it off the charger and I'm on 96 percent in less than 1 min
Sent from my SCH-I500 using XDA App
Click to expand...
Click to collapse
Wow same here..I just took mine off the charger bout 10 minutes ago and it's at 95% now. I guess I'm gonna let the battery run completely dead and charge it and see what happens.
I did something similar. I charged to 100% while it was on, removed from charger then powered off. When phone was off I plugged charger back in and waited til it was at 100% then unplugged again and powered on. Waited until phone was completely on then unplugged again and connected to charger. Waited til it was at 100% and while still plugged in at 100% booted into recovery and wiped battery stats. Then rebooted phone into OS and unplugged. I had tried this previously with DL09 and it helped a little. Last night I wanted to see how my battery would drain after doing this. With WiFi on and I got about 10 emails during the night, from 8:30pm to 6:00am I lost only 13%!!! Previously I would have lost from 35 to 40%. ymmv
jv
my phone doesnt sleep even though my screen is off... how can i fix that
miguel11691 said:
my phone doesnt sleep even though my screen is off... how can i fix that
Click to expand...
Click to collapse
Spare Parts says "Time spent without sleeping: 53m 15s (100%)
Wow.
If I go to Battery History and change the top dropdown to Partial Wake Usage, it says Android System at the top with a bar that's at least 75% full.
ataranine said:
Spare Parts says "Time spent without sleeping: 53m 15s (100%)
Wow.
If I go to Battery History and change the top dropdown to Partial Wake Usage, it says Android System at the top with a bar that's at least 75% full.
Click to expand...
Click to collapse
Looks like Samsung has to make an update or patch to this LEAKED version LOL. I'm so fed up with people failing from Samsung and Verizon for this device.
Syn Ack said:
Looks like Samsung has to make an update or patch to this LEAKED version LOL. I'm so fed up with people failing from Samsung and Verizon for this device.
Click to expand...
Click to collapse
Yeah looks like I'll be going back to DL09.
ataranine said:
Spare Parts says "Time spent without sleeping: 53m 15s (100%)
Wow.
If I go to Battery History and change the top dropdown to Partial Wake Usage, it says Android System at the top with a bar that's at least 75% full.
Click to expand...
Click to collapse
Give it some time. I was showing that as well but after about half a day I rechecked and it showed the correct percentage for Running time.
jv
johnnyv5 said:
Give it some time. I was showing that as well but after about half a day I rechecked and it showed the correct percentage for Running time.
jv
Click to expand...
Click to collapse
yours was also telling you it spent 100% of it's time without sleeping? Mine's been doing it for 2h 9m 25s...the same amount of time my phone's been on.
ataranine said:
yours was also telling you it spent 100% of it's time without sleeping? Mine's been doing it for 2h 9m 25s...the same amount of time my phone's been on.
Click to expand...
Click to collapse
I was pulling my hair out trying to figure this out too. It seems to have solved itself. Right now it is showing 47% usage. Sorry I couldn't help.
Jv
Sent from my SCH-I500 using XDA App
This is a proven technique, and it takes patience. Seeing the battery drop from 100% down to 95 or 96% after unplugging is normal behavior. I've done this already. Left my phone unplugged overnight and lost 1% battery. If you're too impatient to take the time to do this, that's your loss. You'll see the battery life "improve" over the course of a few days as the reporting gets more and more accurate.
Sent from my Fascinate using the XDA app
I agree with supplysidejesus. This is a standard practice and should be done with each major rom or kernel install. This leak hasn't been put long enough for most of us to know what our expected battery life will be yet. Give it a few days for your phones to adjust.
ataranine said:
yours was also telling you it spent 100% of it's time without sleeping? Mine's been doing it for 2h 9m 25s...the same amount of time my phone's been on.
Click to expand...
Click to collapse
try disabling gps in the notifications, that worked for me, but once i turn gps on again, it will drive up to a high percentage.

Inaccurate battery% ALWAYS

Regardless of any calibration method i try, i can never get an accurate battery reading. (Before i continue, ill point out that every app ive used to check my battery health has said "good")
Ive tried calibrating with/without the calibration app. Ive tried just deleting the batterystats via rootexplorer. ive tried calibrating before/after cycling. nothing seems to work.
the reason i know its not working, is because i will calibrate/cycle. lets say ill start a day with 100%. ill unplug my phone, leave for work, and use my phone moderately to feel out the battery drain. then at some point, ill plug it into my charger at work......just now, for example, after three hours of use my phone went from 100%-71%....i went to charge it, and once i plugged it in my percentage display changed from 71% to 63%!!! my percentage will constantly jump up and down throughout the day when i plug/unplug my phone.
anyone else experience this?
PS - its not ROM or kernel, its been happening to me for the last 2-3 months...ive flashed several roms/kernels in that timespan, and have ODINed at least once.
PPS - Ill also add that when i unplug my phone to start my day (after its been charging all night), it will stay at 100% for about 30-45min, at which point it will then start draining on an average of 1%/10min. i feel this may have something to do with it.....does it have something to do with me calibrating at too high of a voltage??
Well as for your inaccurate battery readings, i would suggest that you to odin back to stock and. Leave the phone to charge for 4hours(the time my phone takes to charge from 0-100%)then use the battery calibration app or wipe battery stats via cwm. And as for the draining it might be corrected after you calibrate it.
I know this coz I have experienced this in the past and i'd lose around 1% every 20-25mins now.
Sent from my SGH-T959 using XDA App
stanton93 said:
Well as for your inaccurate battery readings, i would suggest that you to odin back to stock and then use the battery calibration app or wipe battery stats via cwm. And as for the draining it might be corrected after you calibrate it.
I know this coz I have experienced this in the past and i'd lose around 1% every 20-25mins now.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
please read OP
UPDATE: i just rebooted my phone at 56%....it booted up and it displayed 24%......wtf is this
You said you've ODIN'd like once.... dude, if you aren't going to be cool with suggestions, esp the most obvious ones, not sure what it is you expect from us.
Should I hit thanks? JK
Call T-Mo and tell them and get a new battery.... they WILL give you one.
the best way to calibrate ur phone and its worked perfect for me. Charge it to 100% and then unplug it and as soon as unplug it go to sgs tools and run apply script and inside apply script there is delete battery stats. Click on that and it will take less then 10 sec and ur battery will be running great. Now this works great on my phone i hope it works on urs nicely.
At your PPS: This is completely normal and expected battery behaviour. It SHOULD happen. Here is why
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
Please read this article fully to understand why it happens and why it SHOULD happen. As for your plug/unplug deviations...I have seen those but it has rarely been more than 2-3% difference which is around the normal range. It sounds like a bad calibration issue to me but then again I can't be sure, especially if you said you have done a calibration correctly. You can try a new battery like the poster above me suggests.
s15274n said:
You said you've ODIN'd like once.... dude, if you aren't going to be cool with suggestions, esp the most obvious ones, not sure what it is you expect from us.
Should I hit thanks? JK
Call T-Mo and tell them and get a new battery.... they WILL give you one.
Click to expand...
Click to collapse
So if i clearly state in the OP that it was happening to me before and after ive ODINed, and someone says you should ODIN...thats not a lazy suggestion?
or if someone says to try calibrating, when I stated several times in the OP that ive tried multiple calibration methods...thats not a lazy suggestion?
What i expect is if ive pointed out that ive already taken troubleshooting steps, then dont suggest those troubleshooting steps. no one is forcing a response, so if you dont know, simply dont answer. dont just read the title, skim the post, and give programmed suggestions.
theres absolutely nothing wrong with trying to seek out answers other than the conventional ones. ODIN and reflash are the laziest responses......granted, they will often fix problems, but there may be other ways to solve certain issues.
The goal of my OP was to see if anyone else had experienced it, and if someone responded affirmatively, i would ask them about their calibration methods and we could brainstorm. I would much rather seek out problem-solving knowledge before resorting to ODIN/reflash/new battery/new device...which teach nothing.
movieaddict said:
the best way to calibrate ur phone and its worked perfect for me. Charge it to 100% and then unplug it and as soon as unplug it go to sgs tools and run apply script and inside apply script there is delete battery stats. Click on that and it will take less then 10 sec and ur battery will be running great. Now this works great on my phone i hope it works on urs nicely.
Click to expand...
Click to collapse
This is typically the method i use. i usually let it charge for an hour or so beyond when it reaches 100%, just to ensure i have a full charge. this has not worked for me. i also take it a step further and let my phone discharge all the way until it dies, let it charge overnight when powered off, then ill wipe the battery stats first thing when i wake up.
}{Alienz}{ said:
At your PPS: This is completely normal and expected battery behaviour. It SHOULD happen. Here is why
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
Please read this article fully to understand why it happens and why it SHOULD happen. As for your plug/unplug deviations...I have seen those but it has rarely been more than 2-3% difference which is around the normal range. It sounds like a bad calibration issue to me but then again I can't be sure, especially if you said you have done a calibration correctly. You can try a new battery like the poster above me suggests.
Click to expand...
Click to collapse
i will definitely read this...this is something ive always been very curious about
}{Alienz}{ said:
At your PPS: This is completely normal and expected battery behaviour. It SHOULD happen. Here is why
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
Please read this article fully to understand why it happens and why it SHOULD happen. As for your plug/unplug deviations...I have seen those but it has rarely been more than 2-3% difference which is around the normal range. It sounds like a bad calibration issue to me but then again I can't be sure, especially if you said you have done a calibration correctly. You can try a new battery like the poster above me suggests.
Click to expand...
Click to collapse
this was an extremely informative read. it doesnt shed light on all of my problems...but it definitely explains the longer battery life upon unplugging in the morning. my only question is how am i getting that extra juice when im not actually "bump charging"...i just plug it in when i go to bed, and unplug it when i wake up.....maybe my phone doesnt stop sucking in a charge the moment it hits 100%?
i agree with what he says about not paying too much attention to your battery.....but when its bouncing up and down by 20% increments, thats cause for concern haha. im going to calibrate one more time tonight, and i i get similar results i will swap batteries with another vibrant user.
do you guys suggest deep cycling, before or after wiping battery stats? (or should i just wipe stats at a full charge, and not deep cycle at all) >>> there seems to be different opinions on deep cycling throughout XDA
I have had a similar issue. After flashing Roms, plyugging and unplugging it was jumping by a good 10-15%. This turned out to be a simple bad calibration. Normal jumping should be up to 2%, more than that usually indicates bad calibration. Granted, normally nowdays, mine does not jump at all.
I recommend cycling it fully empty. That means, go ahead and drain to 0. Then let it shut off. Then turn it on again. Keep turning it on till it STOPs being able to turn on. Then charge it completely. Don't charge overnight as that will charge to 90-95% as the article suggested. Charge it while you're awake so you see when it hits 100%. It's even preffered if you charged it while the phone is off. After it hits 100%, give it another hour on the charger. You can even bump charge to ensure it hits full charge. To bump charge, after it's full, disconnect and reconnect the charger every 20 minutes for that last hour you're charging. Then unplug it, boot into recovery using the 3 buttons. Wipe the battery stats from there. Boot normally into your ROM. See if it is still jumping by 20%. Worst case scenario should be a 5% jump. Let us know what happens.
^ See, there is my confusion... there is a great example of how to calibrate, but the OP seems to get in a tiffy for offering up a suggestion he has done (calibrating). I'd also be cautious about the bump charging as that will really hurt the battery. I'm not one to try and get something for free, but why not just get a new battery?
s15274n said:
^ See, there is my confusion... there is a great example of how to calibrate, but the OP seems to get in a tiffy for offering up a suggestion he has done (calibrating). I'd also be cautious about the bump charging as that will really hurt the battery. I'm not one to try and get something for free, but why not just get a new battery?
Click to expand...
Click to collapse
I support the new battery notion too. It's FREE.
Drain your phone til its dead.... charge it up full.... run a battery calibration app on the market and let it die fully again then charge to 100 percent one last time... good to go!
You might even try using a differnet battery
TopShelf10 said:
Regardless of any calibration method i try, i can never get an accurate battery reading. (Before i continue, ill point out that every app ive used to check my battery health has said "good")
Ive tried calibrating with/without the calibration app. Ive tried just deleting the batterystats via rootexplorer. ive tried calibrating before/after cycling. nothing seems to work.
the reason i know its not working, is because i will calibrate/cycle. lets say ill start a day with 100%. ill unplug my phone, leave for work, and use my phone moderately to feel out the battery drain. then at some point, ill plug it into my charger at work......just now, for example, after three hours of use my phone went from 100%-71%....i went to charge it, and once i plugged it in my percentage display changed from 71% to 63%!!! my percentage will constantly jump up and down throughout the day when i plug/unplug my phone.
anyone else experience this?
Topshelf, I have run into these problems, There are a couple of things that cause the battery to be wonky.
1st Samsung has the battery set not to 100% but actually less (95-98%) so when it is charged and reads 100% as soon as you unplug you get a immediate reading of 95-98% (nice huh?)
The dev/mods, and others have tried to rectify this. No one has found an exact fix for this. On thing I have found that does help is to charge to 100% then unplug and then plug into the computer and recharge back to 100% (the lower milliamp off the computer seems to allow you to get to a higher percentage). Then calibrate. Now when you do that the battery calibration/battery widget/and phone All will read more close (for me +/-3%). This is one of the issues you raised.
The other is the battery drain, with some of the custom roms the gallery seems to one of the culprits, mms sometimes stays on with others and some others that are in TSR but instead of being asleep they are taking resources.
I have used systems panel to trouble shoot and that has helped me. I think you may want to ask Explodingboy70, Roman or whitehawkx, they know more on this and maybe can help.
Hope you get it solved......... stay with it you will........... I did.........
PS the mv setting for the battery is supposed to be 4200mv mine never gets above 4196mv
Click to expand...
Click to collapse

3200mah battery works great, however...

... I just have some things I'd like a little assistance with if possible.
1. Because the battery has over double the capacity of the stock battery, I wasn't expecting even close to sensible battery reports from Android. However, I wasn't expecting it to last for a long time, drain at a rational rate, and then halt at 1% for 6 or so hours. I have no way of predicting how much time I have left when I reach that 1% mark, and it literally just shuts off the phone without warning, as if I just unplugged the battery. Is there any way to adjust anything so that It properly reports the battery charge value from 100-1%?
2. I have no idea how long to charge this phone. Obviously the stats of the stock battery are hardcoded into the OS; after the phone shuts off, I'll put it on to charge, it will enter the charge-only-mode (which is weird to me in itself, thought the custom bootstrap overwrote this?), and it will only take a couple hours to reach 100%. This is about how long it took for me to charge the stock battery. Anyway to have the phone properly display the current charge while in its charge only state? I'm afraid of not properly cycling the battery if I don't charge it long enough, or even worse, damaging the battery by charging too long. After it hits 100%, assuming I am correct in that it still needs to charge after reaching that mark, will the phone even accept more power from the charger? As silly as it might sound, that sorta made sense to me. If the phone is incorrectly measuring the battery at that point, shouldn't it cease to charge after reaching what it thinks/I] is a proper 100%?
3. If there is no way to fix the issue in #1, I read somewhere you can measure the voltage of a battery and know when the phone is fully charged or about to die based on that voltage? At least I think it was voltage.
I've calibrated, don't bother asking. That has never worked, even on stock; I'm convinced its a myth, but that's a discussion for another thread.
By the way, Eclipse ROM's battery life sucks. Anyone stating otherwise is misinformed. The best battery life I ever experienced was on stock 2.2, followed very closely by Liberty 3 ROM. I have no idea why Eclipse has such terrible battery drain, though I would be interested if anyone knows. I've gone through two phones, their respective batteries, and now my third battery, the monstrosity that is the 3200mah, so please don't bother trying to convince me that Eclipse has better battery than some alternatives. It sucks. I'll be downgrading back to 2.3.4 and flashing Liberty right after I finish writing this.
Thanks to anyone who can help!
Also, I've been following the Droid X2 bootloader status for like 6 months. Realistically, how close are we to being able to flash a new kernel? An I'm pretty sure we can't crack to bootloader anyways. I remember calculating the possible combinations of keys Motorola could have used; it was a massive number. In that case, how would hijacking the boot process allow us to use Cyanogen? If we can't crack the bootloader and then flash the CM kernel, wouldn't it just be a glorified version of Eclipse? I don't even like Eclipse. Lawl.
I'm done typing. My sexy computer comes tomorrow; crossfire 6990's here I come! Need to get to sleep so I can all-night-hardcore-no-life play BF3 with Shibby tomorrow. I hope someone on these forums knows who that is.
You need to boot into clockwork recovery. Go to advanced and hit clear battery stats. after that fully charge and discharge your battery 4 times and that should fix you up.
Sent from my SGH-T959V using XDA App
Oh sorry. Didn't realize cw hasn't been released for your phone yet. Have you tried deleting the batterystats.bin file manually. I believe there is also an app for this on the market.
Sent from my SGH-T959V using XDA App
I have the same battery that you do with this phone, although I don't use the phone anymore.
You can NOT make Android read the battery correctly. You are in the dark.
Calibrating will NOT, as you've already found out, fix battery reporting.
I used to gauge when it was going to die by looking at mV left. Around 3500mV is when it would die. Get Battery Indicator from market to find out mV.
Oh, and: 4.2V = 4200mV etc
hampsterblade said:
Oh sorry. Didn't realize cw hasn't been released for your phone yet. Have you tried deleting the batterystats.bin file manually. I believe there is also an app for this on the market.
Sent from my SGH-T959V using XDA App
Click to expand...
Click to collapse
I appreciate the understanding you have of my situatition, for, clearly, you have thoroughly read what I wrote.
donlad said:
I have the same battery that you do with this phone, although I don't use the phone anymore.
You can NOT make Android read the battery correctly. You are in the dark.
Calibrating will NOT, as you've already found out, fix battery reporting.
I used to gauge when it was going to die by looking at mV left. Around 3500mV is when it would die. Get Battery Indicator from market to find out mV.
Oh, and: 4.2V = 4200mV etc
Click to expand...
Click to collapse
I figured as much. For a multi-billion dollar investment, you would think Google and its partners wouldn't overlook something so silly, not to mention locking our ****ing bootloader.
Anywho, I'll try out that app. Is 4.2V a full charge for the 3200?
Thanks!
This is a known issue with the droids. Some have had success with the batteryleft widget which can learn the full capacity of the battery.
Also not googles fault. This one is only Motorola's issue.
Sent from my SGH-T959V using XDA App

Battery calibration

What application is everyone using? I'm getting poor battery with 0.2.0 beta and I used one and it still persists.
Sent from my MB855 using XDA App
Charge to full, boot into CWM and wipe battery stats.
Use until device dies from dead battery, recharge to 100%. Use as normal for a couple days. It should get better.
Sent from my MB855 using Tapatalk
Google search "wiping battery stats myth debunked" or click http://www.xda-developers.com/andro...-battery-stats-does-not-improve-battery-life/
A google android engineer spoke very candidly on the subject saying it does absolutely nothing.
damn its all a myth ha I read that, good find.
Sent from my MB855 using XDA App
yea read it was a myth a while ago
Flashed cm9 today and now my battery life is horrible, when it it's on the charger it takes forever to charge.
I had that problem also so I wiped everything and formatted everything and Redlands everything starting with cm9 v 0.1.0 2d , then flashed cm9 v 0.2.0 . Everything great
Sent from my MB855 using Tapatalk
myth
maybe a myth and from everything i have read (that article included) it seems to be. but im ok with the placebo affect or whatever bc i at least FEEL like it has helped since i did it after getting on cm9 beta 0.2.0 or whatev. not on beta 0.3 battery has been sucked hard as all get out, but such is life.
I have a question/comment about this. When a ROM is flashed I always wipe and format /data, /system, /cache, /davlik-cache, and factory reset. At this time I power down and recharge although the recharge may not matter as the lowest I've been was 85%. After recharge I boot into CWM and wipe/factory reset again then allow the phone to reboot. Isn't the batterystats.bin file in one of those places I wiped/formatted?
Once it's booted I just turn off and power up again then activate. Out of all the different ROMs I have tried this usually works very well. There was only one time my battery life was poor after flashing and I tried a battery wipe app and it still didn't help. I finally attributed it to the ROM and flashed a different one. Following the same process the new ROM was installed and battery life is great again. Did this yesterday flashing Rocko unlocked 3.0. After 4 to 4-1/2 hours of heavy use, when I say heavy I mean heavy, I am still at nearly 70% battery. If it works the way it looks to, I'll be getting at least 10-12 hours on a charge, probably more.
Sent from my MB855 using xda premium
Thanks for this guys helped me out
Calibration
So what you are saying since I have a Photon with an extended battery even rooting it won't calibrate the battery. It sits at 1% for hours. Had an HTC prior and didn't have this problem. Waste of money getting an extended battery when you don't know when it is going to die on you.
Minkota said:
So what you are saying since I have a Photon with an extended battery even rooting it won't calibrate the battery. It sits at 1% for hours. Had an HTC prior and didn't have this problem. Waste of money getting an extended battery when you don't know when it is going to die on you.
Click to expand...
Click to collapse
Not at all. What I'm saying is I personally don't use ine as I wipe battery stats as part of ny flashing process and do my first boot on a new rom with my battery at 100%. That works for me.
If you're switching to an extended battery you may need to wipe battery stats. This can be done with a battery calibration app or from within CWM, if you've unlocked and installed a custom recovery.
BTW: Rooting will allow you to install and run a batt cal app but rooting alone will not calibrate your battery.
I'm a MoPho-er
FernBch said:
Not at all. What I'm saying is I personally don't use ine as I wipe battery stats as part of ny flashing process and do my first boot on a new rom with my battery at 100%. That works for me.
If you're switching to an extended battery you may need to wipe battery stats. This can be done with a battery calibration app or from within CWM, if you've unlocked and installed a custom recovery.
BTW: Rooting will allow you to install and run a batt cal app but rooting alone will not calibrate your battery.
I'm a MoPho-er
Click to expand...
Click to collapse
So I will be learning more about rooting. But I thought i saw where others who had extended batteries that rooted with calibration apps their Photon still didn't read correctly. I could be misunderstanding something. Newbie here.

[Q] XT910 battery % drop (incorrect)

Sorry for mistakes, hope it's not hard to understand
Looks like i have smth like this - http://forum.xda-developers.com/showthread.php?t=1515020 but on my RAZR XT910
When i bought my RAZR, everything was ok it was on 2.3.5 droid, when 2.3.6 released everything still was perfect, but when i started trying to setup custom ROMs, this issue started... I tried to get back to 2.3.5 through RSD - its not helped. Now i'm on T-Mobile 4.0.4, everything is the same.
Fully charged phone, idling, some calls, it goes to 80%, then it jumps to 20% then to 5%(during this, voltage drops to 3.5, but then goes up to 4.1-4.0 as it must be!) . Phone works well, it took about 4 hours for battery drainer to drain this "5%".
I tried to fully charge\discharge without using phone, i tried any tutorials that will help to "calibrate" battery. Nothing helped.
I think it happens when Voltage drops to 3.5, OS thinks that its discharged, but when it goes back to 4.1, battery lvl is still low.
Maybe someone can help me with this issue...
Now i just added battery info widget, which shows me Voltage, so i can understand charge lvl... thats annoying
And i cant go to Motorola Service(No official service in Russia) and cant return my phone, it will took a lot of time... and i think this issue must be fixed..
have you tried like the battery calibration apps in the app market?
i tried a lot of apps from market, and nothing helped.
Try do this:
Manual Calibration method:
A) Charge your phone to 100% (and let the phone charge for half an hour after the 100%)
B) Install bootstrap recovery
C) Reboot your phone through the bootstrap recovery program
D) In recovery go to advanced>wipe battery stats>Yes, wipe battery stats
E) Reboot your phone
F) Do 2 or 3 full charge/discharge cycle (100% - 15% < X =< 0% )
If this won't do, flash the stock rom and send it to RMA.
Never let the phone to reach 0% and die, your battery will take damages 'cause of that.
i think bootstrap cant be installed on T-Mobile 4.0.4
If you're rooted, you can install this
I've used it on the T-Mobile Leak without problems. Flashed the overclock.zip with it (But no overclocking on the Leak, the script won't work)
The risk is the wipe. I'm not sure, if it messed up with your Phone
Never let the phone to reach 0% and die, your battery will take damages 'cause of that.
Click to expand...
Click to collapse
That is true, but I wonder if Android seriously lets you drop your cells to 0%... It still has enough capacity to shut itself down without interruption. So I guess there might be an internal protection against reaching "real 0% charge".
Still it is not too healthy for your battery
HSD-Pilot said:
If you're rooted, you can install this
I've used it on the T-Mobile Leak without problems. Flashed the overclock.zip with it (But no overclocking on the Leak, the script won't work)
The risk is the wipe. I'm not sure, if it messed up with your Phone
Click to expand...
Click to collapse
thanks! razr is rooted, so it works!
now i'm going to test what Syriochan said
@sekall: yeah it is possible that 1% (or maybe 5%) remains, but it is also true that no developers noticed something during kernel developing for any android device. So it may be true but it's better to not let it drop under 10% or 5%
@amletika: Not sure if calibration app do the same (never tried one, always used this method) but i've had 7 android phones so far and battery life was always at it's maximum after wipe and cycles. (I believe battery stats are kernel or data related so i don't know if this will work for you, consider that maybe hardware is at fault in this case)
amletinka said:
thanks! razr is rooted, so it works!
now i'm going to test what Syriochan said
Click to expand...
Click to collapse
Please post back after you do.
I have setup ics bootstrap. And made battery wipe immediately, when my phone was about 3.9V and was saying its 5% of battery. When i rebooted it was saying that this is 30%. Then i charged to 100% waited a little more and unplugged. Its about 24hours of using with normal load, and there was no battery lvl jumps!! Thank you guys!
P.s. i dont know what battery calibration apps does, I tried a lot of them, but only wipe through ics bootstrap recovery helped!
Sent from my XT910 using XDA

Categories

Resources