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A while back there was a thread about supposedly calibrating X10's battery by charging it to 100%, turning it off, taking the battery out and inserting the charger chord, and then putting the battery back. This made the battery percentage drop down to 88% and when repeating this procedure a couple of times it would rise back to 100%, thus supposedly calibrating the battery. This worked to some and to others not. Now that we have xRecovery, I thought I'd try this in conjuction with the battery stats wipe option and whaddayaknow, I've got better battery life now. Now I can go through a whole day with heavy usage and still have some battery left for the phone to survive through night with data and syncing on. So I thought I'd share this with you guys to try out and report too.
ROOT IS REQUIRED!
STEPS:
1. Download and install xRecovery from here.
2. Charge your phone to 100%
3. Turn off the phone and boot into recovery
4. In recovery, go to Advanced options --> Wipe Battery Stats --> Yes
5. Take the battery off
6. Insert the charger chord
7. Put the battery back and wait for the phone to boot
8. Once the phone boots up, you will notice that the battery percentage is around 88% instead of 100%
9. Charge the phone back to 100%
10. Repeat 4-5 times, seems to be the sweet spot
11. Enjoy your hopefully better battery life and report!
REMEMBER THAT I'M NOT RESPONSIBLE IF YOUR PHONE BLOWS UP ETC. AFTER THIS!
Do i need to repeat all from 1 to 10 until i get 100? And do i need to do this 1 Time or do i need to do this the next 2-3 Days too?
Wolfbreak said:
Do i need to repeat all from 1 to 10 until i get 100? And do i need to do this 1 Time or do i need to do this the next 2-3 Days too?
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Repeat from step 2 onwards till step 9. I believe you don't have to do it more than two or three times to get the desired effect, that's why I'd like to have you guys to test it out too to confirm.
Been through the cycle 5 times, still showing 87% at reboot.
Just for the record, I have the 435 firmware.
Sent from my X10i
Did you recharge after reboot?
Lord Takyon said:
Been through the cycle 5 times, still showing 87% at reboot.
Just for the record, I have the 435 firmware.
Sent from my X10i
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Click to collapse
Sent from my X10i using XDA App
teddymild said:
Did you recharge after reboot?
Sent from my X10i using XDA App
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Click to collapse
Yes my friend, followed to the letter.
I have noticed one thing, my battery is behaving a bit strange. I used it earlier and it depleted from 100 to 93%, it then went back in my pocket for an hour or so and when I next used it it said 98% charge.
I ran it down to 83% and then put it back to sleep for 30 minutes, checked it again and it said 94%.
That is certainly strange... Hasn't happened to me yet, and I've been monitoring my battery for nearly a week now.
It certainly seems to have more juice in though. Given it a bit of a thrashing this evening and I would usually be down to around 50% our so, it's currently at 75%.
I will monitor for a day or so to see if it is just placebo or not.
Sent from my X10i
Lord Takyon said:
Yes my friend, followed to the letter.
I have noticed one thing, my battery is behaving a bit strange. I used it earlier and it depleted from 100 to 93%, it then went back in my pocket for an hour or so and when I next used it it said 98% charge.
I ran it down to 83% and then put it back to sleep for 30 minutes, checked it again and it said 94%.
Click to expand...
Click to collapse
Same happened to me overnight. Went up 8%!
Further, I've now done this process 6 times meaning my battery is effectively 160% of what it was???!!!
Have we got any hardware experts who can pass a view on whether this a bad thing to do? Overcharging a car battery can be bad for example.
i've done it 7 times and still boots at 88% battery.
lets see if it did something in the next day.. =P
I've done this and on the first try, it booted with 88%. I recharged it and on the next boot it came with 100%.
Let's see whether there is any real improvement
Thanks anyway for the guide.
Lord Takyon said:
Been through the cycle 5 times, still showing 87% at reboot.
Just for the record, I have the 435 firmware.
Sent from my X10i
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Click to collapse
it happened in the same way with me.
I have 504 firmware, x10a.
Cant we use the battery information menu? There you can see the battery voltage. The maximum is 4.2V.
Forget the "Wipe Battery Stats".
If you do the steps, except the 1, 3 and 4, the result described in the "8" step will happen.
in other words:
1.Battery is 100%
2. Take the battery off
3. Insert the charger chord
4. Put the battery back and wait for the phone to boot
5. Once the phone boots up, you will notice that the battery percentage is 88% instead of 100%.
In an infinite way.
I followed the steps from the first post and the first time I reboot the phone went to 94%. I then charged to 100% and ran the steps again and this time I reboot to get 77%. I then ran the steps one more time and after reboot i got 100%. I then left the phone on standby and did not use it for 12 hrs and it was still at 87% battery. This is a definite improvement over before even on just standby I was lucky to get 24 hrs out of it and now it seems it can last about 80+ hrs on standby.
Im on .24 firmware with bluesparks rom.
first time i did this it booted at 96% then the second time 86% nothing strange as of yet
olavopb said:
Forget the "Wipe Battery Stats".
If you do the steps, except the 1, 3 and 4, the result described in the "8" step will happen.
in other words:
1.Battery is 100%
2. Take the battery off
3. Insert the charger chord
4. Put the battery back and wait for the phone to boot
5. Once the phone boots up, you will notice that the battery percentage is 88% instead of 100%.
In an infinite way.
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Click to collapse
The point is to wipe your phones memory of the battery thus learning your phone a new pattern or behavior, so i belive every step from original guide is nececcary.
Sent from my X10i using XDA App
Tjotte said:
The point is to wipe your phones memory of the battery thus learning your phone a new pattern or behavior, so i belive every step from original guide is nececcary.
Sent from my X10i using XDA App
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Click to collapse
Yes. I arrived the this conclusion, after 5 attempts from original guide.
I told this in the post 12.
I've done this 5 cicles. It keeps showing 88% but battery life improved a lot. I had to plug every night but now it's my second day without recharging.
Thanks a lot! !!!
Sent from my X10i using XDA App
I've done this 3 or 4 times now and in 12 hours I've gone from 100 to 87% including a few calls and a small bit of Sat Nav. I also have Ultimate juice. Still very good and would get over 3 days with this performance.
Still 88% all the time when rebooting and wiping the stats though.
every time i charge my phone to full, the battery level reads that i'm at 91%, never at 100%. i deleted battery stats in recovery but the problem persists. i got an htc inspire and running absolution 3.7. how do i fix this?
my current absolution rom is a backup. i had 3 different roms before restoring this rom. should i have done a full wipe besfore restoring the rom? could this be the problem why my battery doenst give a good read?
How did you charged before wiping stats?
The best way:
- power off your phone completely
- charge battery
- wait till battery-LED is green (maybe just wait a little bit longer)
- start into recovery
- wipe battery stats
choliemelan said:
How did you charged before wiping stats?
The best way:
- power off your phone completely
- charge battery
- wait till battery-LED is green (maybe just wait a little bit longer)
- start into recovery
- wipe battery stats
Click to expand...
Click to collapse
hi choliemelan.. to answer your question, i had my battery at 90% before wiping battery stats in recovery.
but i got a quesrtion for you.. my current rom is a backup of absolution. i had 3 different roms before restoring this rom. should i have done a full wipe before restoring the rom?
omarrq said:
hi choliemelan.. to answer your question, i had my battery at 90% before wiping battery stats in recovery.
Click to expand...
Click to collapse
Ok, just try out my suggestion with charging in power-off-mode
omarrq said:
but i got a quesrtion for you.. my current rom is a backup of absolution. i had 3 different roms before restoring this rom. should i have done a full wipe before restoring the rom?
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Click to collapse
the 3 Roms you used before were Absolution, too, but different versions? So a full wipe is recommended, but shouldn't be essential.
In case of trying fully different Roms, a full wipe / factory reset is neccessary, also if you are using a "xyz"-Rom before and want to roll back to a backup of Absolution-Rom.
also your battery might have started to get weaker. if you use the phone a lot and make lots of charging cycles battery life gets shorter. also if you plug it for a minute or for an hour its considered a charging cycle. so if you have a lot, then you might have to get a new one
choliemelan said:
the 3 Roms you used before were Absolution, too, but different versions? So a full wipe is recommended, but shouldn't be essential.
In case of trying fully different Roms, a full wipe / factory reset is neccessary, also if you are using a "xyz"-Rom before and want to roll back to a backup of Absolution-Rom.
Click to expand...
Click to collapse
hi choliemelan.. actaully, i used 3 completely different roms, not different versions of Absolution, just to let you know. tell me what you think i should do.
Its not a strange problem man, google it, it happens all the time, just keep charging it properly and it will be fine. I wouldnt worry about it, some phones go to 100% and drop like a stone till 90% then go normal, its just the way your phone translates it
I had similiar problem...whenever i played games or anything that used 30% battery or battery was below 20% I pluged to charge but it stayed there for 1:30 hour 0o. So i unpluged and played games till 0% and phone "died". Than removed battery for 2 mins and charged to 100% without turning on...
when you use all of battery take battery out(i dont know why but it makes battery better). This battery in androids really mess up things...hope u fix it
Nokia 3310 ftw x)
CdTDroiD said:
Its not a strange problem man, google it, it happens all the time, just keep charging it properly and it will be fine. I wouldnt worry about it, some phones go to 100% and drop like a stone till 90% then go normal, its just the way your phone translates it
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Click to collapse
thanks man,., will do
Kresh0 said:
I had similiar problem...whenever i played games or anything that used 30% battery or battery was below 20% I pluged to charge but it stayed there for 1:30 hour 0o. So i unpluged and played games till 0% and phone "died". Than removed battery for 2 mins and charged to 100% without turning on...
when you use all of battery take battery out(i dont know why but it makes battery better). This battery in androids really mess up things...hope u fix it
Nokia 3310 ftw x)
Click to expand...
Click to collapse
yeah my battery today started off at 97& after full charge. then when i checked on it 6 hours later, it reads like it started at 100%.. this is very strange.
Kind of similar problem with me, Even after keeping my htc one v in charging for 4 hrs, the battery still reaches 85 ~ 90% always, and then it charges at snail's speed.
If i restart my phone at this point, the battery indicator shows 100% !
I am confused, since if it was a genuine trickle charge, the battery percentage should remain same even after reboot.
I rooted and installed the [ROM]CM9 4.0.4 ICS Liberty[09.Jul.2012] last night. It is very slick and so far very stable.
My standby battery life seems decent, dropping a percent or two every hour. However when the screen is active at just the home screen with nothing open, it is dropping at atleast 1% a minute. I am not over exaggerating this, it went from 72% to 65% in 5 minutes just now testing the theory.
I have the following OFF: wifi, bluetooth, gps, syncs (except gmail once an hour), live wallpaper.
I have brightness set to manual, and very low. I have no widgets on screen except a time widget.
I have installed a number of apps (less than 10) since installing the ROM, including facebook, gmail, maps, gvoice, twitter, espn, etc - but nothing that is using location or updating real time at any point (to my knowledge).
Any thoughts on what my issue might be? or any further info I can provide?
Thanks! I love this build so far, I just need improved battery life or I am going to have to try something else.
you tried wipe battery stats?
and for me this situation whith battery in first 1-2 days is normal, than when you uncharge your phone to 0% and charge it to 100% 1-2 times everything settles into shape!
sorry for my bad english
molecula364 said:
you tried wipe battery stats?
and for me this situation whith battery in first 1-2 days is normal, than when you uncharge your phone to 0% and charge it to 100% 1-2 times everything settles into shape!
sorry for my bad english
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Click to collapse
I wiped stats last night after charging to 100%. I let it discharge and turn off on its own, and I am charging it up to 100% again now. I am hoping doing this a few times will make it better, because right now it is unusable.
inabag said:
I wiped stats last night after charging to 100%. I let it discharge and turn off on its own, and I am charging it up to 100% again now. I am hoping doing this a few times will make it better, because right now it is unusable.
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Click to collapse
I find that my battery does that when its working too had to keep a 3G signal. Try witching to 2G when it's just idle
molecula364 said:
you tried wipe battery stats?
and for me this situation whith battery in first 1-2 days is normal, than when you uncharge your phone to 0% and charge it to 100% 1-2 times everything settles into shape!
sorry for my bad english
Click to expand...
Click to collapse
I heard that wiping battery stats does nothing. A google representative said that the stats only show what has been using the battery in the "Battery use" app. Not how it reads the battery.
Source: http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer
It's unbelievable,i use very well ,does your battery issue ? did you install other rom test it?
My HAM2 is reporting battery level incorrectly. It keeps on going normally till about 35% and then within a few minutes, it drops down to zero and turns off. I have used the battery calibration app to try to reset the battery stats but to no avail, the problem persists. Any help will be appreciated. The ham2 is rooted and TWRP installed.
sagarone said:
My HAM2 is reporting battery level incorrectly. It keeps on going normally till about 35% and then within a few minutes, it drops down to zero and turns off. I have used the battery calibration app to try to reset the battery stats but to no avail, the problem persists. Any help will be appreciated. The ham2 is rooted and TWRP installed.
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Click to collapse
While not to the same degree, I notice once I get to about 10%, it's a crap-shoot as to whether I'm going to get another hour or so or 10 minutes. The longer I have this phone, the more I notice it's a buggy mess.
sagarone said:
My HAM2 is reporting battery level incorrectly. It keeps on going normally till about 35% and then within a few minutes, it drops down to zero and turns off. I have used the battery calibration app to try to reset the battery stats but to no avail, the problem persists. Any help will be appreciated. The ham2 is rooted and TWRP installed.
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Click to collapse
That is usually a sign of a damaged battery.
Mine is only week old but I've run down under twenty percent and it's drained and dropped consistently. Might contact Huawei since it has two year warranty.
I'll run mine down today and see what I experience.
Sent from my MT2L03 using XDA Free mobile app
27% all seems fine. I'll watch netflix for a while and check again.
Sent from my MT2L03 using XDA Free mobile app
19% all battery stats report the same. Still watching Netflix. Seems you may have either done something to cause report errors or it is indeed a faulty battery. Good luck
Sent from my MT2L03 using XDA Free mobile app
Try recalibrating your battery, if your phone is reporting incorrect charge. The BMS within the battery might need reset.
When your phone is down to "critical level" (before the phone is ready to turn off) reboot into Recovery Mode. Let phone sit and drain until it empties.
Once empty, let sit for 4 hours. This will reset the "low value".
Charge with phone off to 100%, leave phone off. Unplug and let sit off for another 4 hours. Turn phone back on and use as normal, the battery *should* be recalibrated. The reason for waiting is to redefine a "high" and "low" charge state. If current is constantly being supplied or drained, then it will see those values as a "blip" rather than a calibration number.
It isn't always a bad battery, sometimes it's just miscalibrated.
Quick Drain after 15% Is Reached.
volcolm said:
Try recalibrating your battery, if your phone is reporting incorrect charge. The BMS within the battery might need reset.
When your phone is down to "critical level" (before the phone is ready to turn off) reboot into Recovery Mode. Let phone sit and drain until it empties.
Once empty, let sit for 4 hours. This will reset the "low value".
Charge with phone off to 100%, leave phone off. Unplug and let sit off for another 4 hours. Turn phone back on and use as normal, the battery *should* be recalibrated. The reason for waiting is to redefine a "high" and "low" charge state. If current is constantly being supplied or drained, then it will see those values as a "blip" rather than a calibration number.
It isn't always a bad battery, sometimes it's just miscalibrated.
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Click to collapse
I have this problem too. When my battery gets down to about 15%, I get a warning that I must plug in my charger immediately. I have to do it within 15 seconds or so or my battery plummets all the way to 0% and shuts down the phone. My phone is not rooted, so I don't think I have a "Recovery Mode". Or do I? Would I use the same procedure and be able recalibrate my battery ? When I restart my phone by regular (unrooted) startup after a 100% charge and 4 hour wait, would I get a Recovery Mode option or not? If not would it still recalibrate the battery?
How much are you guys losing overnight ? I'm draining about 1%/hr in stand-by now (deep sleep) , I remember I used to lose max 2% overnight awhile ago
icyboyice said:
How much are you guys losing overnight ? I'm draining about 1%/hr in stand-by now (deep sleep) , I remember I used to lose max 2% overnight awhile ago
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Google made some changes recently in its services that has had a negative effect on battery life. I am sure they will fix it. Lots of people complaining about it on a lot of different devices.
icyboyice said:
How much are you guys losing overnight ? I'm draining about 1%/hr in stand-by now (deep sleep) , I remember I used to lose max 2% overnight awhile ago
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Click to collapse
I checked last night and I lost 2% over 7 hours. I'm using an L05 so I dunno how much of a difference that makes.
tomlemange said:
I checked last night and I lost 2% over 7 hours. I'm using an L05 so I dunno how much of a difference that makes.
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Click to collapse
Yea this was similar to my drain months ago . Eh idk why it's changed . Have had the same setup all this time , with amplify (wakelocks/alarm blocker) and deep sleep when screen off (PowerNap) . I have switched the sim to at&t (previously T-Mobile) .. Though both have a similar signal range at home . Not sure , will try with a t mobile sim again and will compare .
Sent from my LGLS996 using XDA Free mobile app
Hi i'm just wondering if 5% drain in stanby for 4 hours is normal in the huawei mate 20 pro?
https://drive.google.com/file/d/1kdrHxIl24Rrf72CimiIqRZxuSWpYguAv/view?usp=drivesdk
https://drive.google.com/file/d/1YEXQ9Hkt5s9Xv8rdcJAa7I-saXDI91zM/view?usp=drivesdk
No it's not shouldn't be anymore than 5% at the most. 2 or 3% maybe reasonable.
Darkat70 said:
No it's not shouldn't be anymore than 5% at the most. 2 or 3% maybe reasonable.
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I've found out that line has 126 number of wakelock is that the problem? And the most app sucker is the android system itself and kernel. I'm confused
I've been cleaning up the cache, but going through the whole thing. I noticed that my android system was the major drainer in gsam battery monitor, it lists what processes are being used in it so I'm going to concentrate on them.
I cleared all the cache manually 1 by 1 and got 43 minutes of screen on time from 100 down to 99%, when I don't clean the cache I get 11mins of screen on time from 100 down to 99%
But in 6 hour's last night I lost 3% standby
Something with the android system keeps waking up the system though. When I first got the phone it was still at 100% after 5 hours. I don't understand why.
Darkat70 said:
I've been cleaning up the cache, but going through the whole thing. I noticed that my android system was the major drainer in gsam battery monitor, it lists what processes are being used in it so I'm going to concentrate on them.
I cleared all the cache manually 1 by 1 and got 43 minutes of screen on time from 100 down to 99%, when I don't clean the cache I get 11mins of screen on time from 100 down to 99%
But in 6 hour's last night I lost 3% standby
Something with the android system keeps waking up the system though. When I first got the phone it was still at 100% after 5 hours. I don't understand why.
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Well for some reason after i deleted gsam i lost 0% in a course of 2 hours and 30 mins which is weird right now i'm at 5 hours and 20 mins of sot and 12 hours and 23 mins in with 46% battery left
5% for 4 hours seems normal. My M20P in airplane mode + wifi drains 1% per hour...
Please remove comment
BillPil said:
Please remove comment
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What do you mean?
HermesHidayat said:
What do you mean?
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It is a message to the op... I wrote something by accident... Then edited it and asked for deleting this comment because I couldn't delete it myself...