Hi, I have currently upgraded my Xperia Neo to CM9. I have been experiencing a bit lesser batter life.
Also when i use CpySpy app it doesnt show the time spent by the processor in the specified frequencies. It always shows 0 for all
states. that is definitely not correct. The system can't be idle when i use right? So i'm wondering is there any issue with CM9 or my phone particularly. Also i have already used CM7 and CpySpy was giving me right numbers. I need help to figure out why my battery drains even when my phone is in idle and why there are no numbers in CpuSpy.
Thanks in advance
I can't guarantee, but cpu usage/phone turning to be hot after a while of use/short battery life is something common with most of androids. On my HTC HD2 battery life is twice as short since I started to use android.
If, after rooting or more likely the case after flashing a new rom, you often have battery reporting errors, and re-calibrating the battery along with some steps I will outline for you below will ensure that your battery is getting a full charge, and the battery reporting accuracy is right on. I run my device in performance mode all the time, and with a CPU overclock of 1.25GHz and various tweaks, I have about a day an a half to a day and a quarter of full runtime from my battery. This is with moderate to heavy usage (calls, emailing, text, gaming, web browsing, etc.) so you should have no problems getting acceptable battery performance after following these steps:
1. Take the case off your device (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your device to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your device completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM.
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Sent from my MB865 using xda's premium carrier pigeon service
Apex_Strider said:
If, after rooting or more likely the case after flashing a new rom, you often have battery reporting errors (as mentioned above), and re-calibrating the battery along with some steps I will outline for you below will ensure that your battery is getting a full charge, and the battery reporting accuracy is right on. As far as power cycling, I don't know that it does much good. I run my device in performance mode all the time, and with a CPU overclock of 1.25GHz and various tweaks, I have about a day an a half to a day and a quarter of full runtime from my battery. This is with moderate to heavy usage (calls, emailing, text, gaming, web browsing, etc.) so you should have no problems getting acceptable battery performance after following these steps:
1. Take the case off your device (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your device to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your device completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM.
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Sent from my MB865 using xda's premium carrier pigeon service
Click to expand...
Click to collapse
Great, what should be. :good:
Related
This is my first post, hope you can understand what happens to my phone (SE X10 mini pro - U20i).
When I connect it to my wall charger, it starts charging normally, no problem. If I charge it overnight, what it is supposed to happen is that it charges to 100%, then it stops automatically the charging process, "waits" untill the battery drops a given percentage, not sure how much, and then charges again, and repeats this process until I disconect the phone. This is the normal process, and usually does this.
But some times, what it does is charging to 100%, stops charging and it remains in the 100%!!! Never drops, and it discharges the battery much more rapidly!! I have System Pannel, and when this happens I see that the processor is allways in the 10%, which is not usual in standby... and as the battery is discharging, the % doenst change, still shows 100%, when it is maybe in the 3800 mV. When I disconnect my phone, the % starts decreasing rapidly, as if it was trying to "compensate", ah in maybe 30/60 minutes reaches 50%... This is not normal, and I think it is some process that stops associating the % of the battery with the voltage.
Ever heard of something like this...? My phone is temporarily rooted with Z4mod, with stock firmware. 2.1
try this:
install xrecovery
make sure your battery is at 100% (let it charge over night)
go into xrecovery (press back while the SE logo appears while booting)
go to "advanced options"
delete battery stats
and drain your battery till your device turns off, doesnt matter how
No go. Doesn't solve it... Going to try to charge it tonight with the background data option turned on. Have it turned off to save battery. Probably won't solve it, but it doesn't hurt to try.
This weekend I've charged it WHILE turned off, during the night. Got it off the charger, symbol in screen appeared with full charge, turned it on, it immediatly shown 18% battery left... This is really weird. Can it have anything to do with not using the original charger? I'm using the original as a travel charger, in my bag, in case I need it at work, and at home I use a Nokia charger, with an output of 890 mA, and with the adapter to microUSB (which actually gets very hot). Do you think it can have anything to do with this issue?
Turn off data traffic and "sync now", you will save battery.
With data traffic and sync on, my phone last just one day ( about 24h ).
With it off, It last about 2 ~ 3 days.
Result: I just turn it on, when is needed.
try turning off data traffic and as ur phone is rooted use SetCpu and auto killer memory optimiser....nd never over charge ur phone....charge it only when the battery is <10% and charge it until it gets completely charged....nd as soon it gets charged disconnect it.....nd set the SetCpu to ondemand and auto killer to optimum...see if that works for u..
lso get ur battery checkd if thats ok...
I have found so many guides on how to calibrate battery best. This one: http://forum.xda-developers.com/showpost.php?p=15450518&postcount=3 Or this one: http://theultralinx.com/2011/07/calibrate-androids-battery.html
Or: just charge until full, wipe batterystats and just let it run out of power, then recharge to full again (that is the easiest one). So would the last one be enough, or do you have to do it the complicated way to get best results?
Also when draining the battery until the phone shuts down (after deleting stats), should it be used normal or can I just run some applications to use up battery fast?
what i used to do was:
charge to full once,
unplug, (and you will see sometimes it goes back to 99%),
plug again for a few minutes,
unplug,
go to recovery and wipe battery stat.
then reboot and use the phone NORMALLY until it shuts off (set the brightness to highest for next step).
BOOT straight into recovery and leave the phone until it dies again because there will still be some juice left.
while off, charge it,
when it gets to 100% while off, unplug,
then plug it again for a few minutes,
then boot up normally.
atlaswingpasaway said:
what i used to do was:
charge to full once,
unplug, (and you will see sometimes it goes back to 99%),
plug again for a few minutes,
unplug,
go to recovery and wipe battery stat.
then reboot and use the phone NORMALLY until it shuts off (set the brightness to highest for next step).
BOOT straight into recovery and leave the phone until it dies again because there will still be some juice left.
while off, charge it,
when it gets to 100% while off, unplug,
then plug it again for a few minutes,
then boot up normally.
Click to expand...
Click to collapse
Ive heard you should never "try" to over charging it by unplugging and plugging back in.
There are a lot of rumors and myths about battery calibration (and a lot of threads on this forum and copy-pastes on other blogs).
Personally I don't believe in long rituals with precise times and percents. Battery has build in controller, that can't be wiped. And Android has battery history file, that can be erased (butdoes it have any sense?).
Please, post link to authoritative source of information about battery calibration, if anyone has it.
Use the phone till its out, power it up via download mode to really drain every last drop. Charge it with the official charger while its off, once charging is full power on the phone let it boot properly and resume to charge maybe for 5mins then your done. Battery stats bin = totaly myth.
brianmay27 said:
Ive heard you should never "try" to over charging it by unplugging and plugging back in.
Click to expand...
Click to collapse
i hear you and i was reluctant to do that as well. but since new Li-Ion batteries have some sort of "overcharge protection" mechanism on them,
the batteries will stop taking in current automatically once they reach maximum mAh (not the battery stat maximum, the battery itself).
dangers related to charging are incompatible chargers, screwed up wall sockets, surges, etc. Know that companies nowadays keep saying "USE ONLY <company> COMPATIBLE CHARGERS"
because these chargers/cables also have this tech where current just stops once it's full.
well the "theory" was that since the battery stats is kernel related and gives battery "readings", when the number gets < 15, it will give out the warning to charge, then when the number gets to 0, it shuts off the system. This may happen but the battery MAY still have some power left in it, it's just the battery stats that says "hey, i see it zero, turn us off".
This scenario may happen to a screwed up battery stat reading, which is solved by wiping it's top charge number (1650) and the bottom charge number (0). the next boot will create a new
source file for the battery stat, containing no data then upon boot complete, the system will record the current battery level as top charge number to the battery stat. when it drains out, that
will be the new bottom charge number.
i do not have a wikipedia or engagdet source but Team Whiskey (a well known dev/mod team for Vibrant) of the Samsung Vibrant forum here in XDA explained it themselves.
Thanks for this thread. Really useful!
I use this one, nice & simple app,
https://market.android.com/details?id=com.nema.batterycalibration
Hi,
My phone goes to 99% charge without a hitch but wont go to 100%
At 99% battery my i got 4207mV
All i did was to follow the instructions on this thread
http://forum.xda-developers.com/showthread.php?t=1198333&highlight=battery
Before that 100% is no problem and after that stuck with 99%
and one more thing my phone shows me messahe on lock screen that phone is fully charged unplug but when i see the battery its just 90%.
From 90% onwards i see unplug message.
I am using Alien#4 ROME and Atrix-GB-Kernel-0.1.7-ext4-sv Kernel
Any suggestions or i am just over thinning ?
Same thing continually happens to me. I've done all the "fixes" and suggestions..and it still does it. Sometimes it goes up to 100%..sometimes 95%. All's I ever do is reboot with the phone still plugged in and "usually" (not always), it boots up showing 100%. IMO there is something with GB that is causing it..cuz i've noticed it on every rom i've tried (Alien, Cherry, CM7 etc)..
=>
Same here. It won't charge past 89%, and it did the same in the past at 92/93 %. I fixed it with a hard reset, but don't feel like doing that again.
Sometimes when I disconnect the charger, the phone still acts as if the charger is plugged in. Only solution is to reboot.
I will try to reboot with the charger connected to ser if that fixed my battery metter. Thanks for sharing.
Whipon said:
Same here. It won't charge past 89%, and it did the same in the past at 92/93 %. I fixed it with a hard reset, but don't feel like doing that again.
Sometimes when I disconnect the charger, the phone still acts as if the charger is plugged in. Only solution is to reboot.
I will try to reboot with the charger connected to ser if that fixed my battery metter. Thanks for sharing.
Click to expand...
Click to collapse
Another thing i've done (as per xploited's thread), is when phone is fully charged reboot the phone (while still being plugged in) and pop out the battery right away. The phone will reboot with a ? (looking for the battery)..then pop the battery back in and it will usually say 5%. Leave it charging until it reaches 10% (i've never gotten it to go higher)..at which point unplug and reboot your phone.
Just read this interesting tidbit from another thread:
"Recently i have tested "Battery left widget", a market app.
When i go in "Summary" and "History" and "Sensor usage" option, i see this :
Sensor is activ "all the time" since last "plug on wall".
Sensor is in use by "Android System"
I have test this :
Charge 100% (and calibrated with CMW wipe battery or "BatteryCallibration" app before), unplug, and REBOOT.
This manual reboot stop "Sensor" activated by recharg.
After this simple action, battery drain has disapeer, and "sensor" activity too
Battery drain is the same than Froyo, 1 day in suspend mode, 1 hour game, 1 hour web and 15% battery left. It's magic !
I think, System detect the wall plug, and activ "something" in system nether desactivated after unplug.
Reboot is the only way to stop this sensor, and baterry drain"
So basically..after fully charging your phone..reboot with it unplugged and it should eliminate some of the drain people are experiencing. Until a new version of GB comes out..I think we'll all have to deal with these weird battery issues.
same issue here with alien 4
it was all good i used to get a very impressive battery life. but after i put alien 4 ( before that i used first ken's release of GB ) the battery life is worse and it doesn't charge till 100% and the drain from from 98 to 90 is very quick compared to other drains in range of 10%
With the 1% mod your phone thinks that the battery is at 100% while at 95%... like 94% would be 90% so it would take a while to get to the full 100 because it doesn't want to overcharge the battery and damage it. Also don't worry about the 100% 4200mv is the normal capacity of the battery's cells aslong as it that or over its still fully charged
Sent from my MB860 using XDA App
As mentioned above, you're fine if you're at 4200mv. Ymmv because of battery. And the juice is calculated by software. No chip on the battery. If your mv are significantly under 4200 mv then you need to calibrate. If it's close or over, quit worrying and rebooting and just use it. Sometimes my phone flies through 90's but after that it settles down and everything is normal. If you keep trying reset battery stats your battery is not going to calibrate because you're not discharging enough for the software to figure out more accuracy with numbers it gives you.
I voided my warranty.
Without any thing doing battery is back to 100% charging
Yep, what the other posters wrote is right. To summarize:
1. If you are at 4200mv, stop worrying what % it shows, because you are at full charge.
2. Android software tries to keep the time when battery is @100% to a minimum, because fully charging and completely discharging on regular basis hurts the battery.
3. The battery meter is lying to you, and it's not such a bad thing, read the article -
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
I love u guys.
No Homo OFC
hi guys! i'm running cm7.2 on my su660 (it's a kang build which is ported from p990 official CM build). and i have a problem on charging the phone. when the phone have 10% of battery left, i plug in the charger, the phone show the charging symbol . but when i leave it sleep and come back after 'bout 3 hours, it still show 10%. but the voltage in sparepart is aproximate 4200 mV. so the battery is fully charged but the rom didn't regconize it. but then after some minutes turning the screen on, the rom show that phone is fully charged. so i guess that the battery percentage counter doesn't work why the phone is pluged in and sleep. so this is a rom issue? can i fix it myself?
PS: sorry for my poor English because i'm not a native English speaker. i'm from VietNam. i tried my best to explane my case. hope u can understand me!
If, after rooting or more likely that case after flashing a new rom, you often have battery reporting errors, and re-calibrating the battery along with some steps I will outline for you below will ensure that your battery is getting a full charge, and the battery reporting accuracy is right on. As far as power cycling, I don't know that it does much good. I run my device in performance mode all the time, and with a CPU overclock of 1.25GHz and various tweaks, I have about a day an a half to a day and a quarter of full runtime from my battery. This is with moderate to heavy usage (calls, emailing, text, gaming, web browsing, etc.) so you should have no problems getting acceptable battery performance after following these steps:
1. Take the case off your device (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your device to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your device completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM (if installed) or use Rom Manager (is device is supported).
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Sent from my MB865 using xda's premium carrier pigeon service
i hv bnattery problem for 3-4 month
still cannot solve the battery problem
i think i have done some wrong steps in the battery calibration
when my battery is fully charged in a battery changer(charger for battery only)
when i put the battery into the phone, it's shows that there is about 30% of battery
when i further use the battery, the battery level rise (without charging!) to 100 then drop to 0 and turn off
the time that the phone can use from 100% to 0% is quite short
when every time after charging, the battery level is 100%
it won't charge to the "real" full battery level, ie ~30% (SORRY FOR MY POOR ENGLISH)
how should i calibrate?
i used the battery calibration app, but no use.
Charge to 100 then use battery calibrator from market very simple
Sent from my SCH-I500 using XDA
If your recovery is ClockWorkMod, then there is an option to "Clear Battery Stats". Just try to see whether it helps.
~Cheers
It's a few days late, but battery calibration is unnecessary on modern batteries (Lithium). All the apps do is delete a small file that records power usage, they do not affect battery life in any way. This file is cleared automatically (by the system) when the phone is fully charged.
Further, full charge/discharge cycles will actually have a net harmful effect on your battery life. A lithium ion battery has a limited number of charge/discharge cycles it can sustain before becoming more effective at being a paperweight than powering anything. The full cycles you are doing simply eat into the battery's overall life expectancy.
For instance, it is better to charge from 50% to 100% multiple times than it is to go from 0 to 100 once.
Personally, I would just replace the battery.
I would suggest u to calibrate the battery in the clockworkmod recovery too
if this wont has any effect take into consideration that your battery might be damaged
i faced this problem one year ago with a galaxy spica the battery was shown as full and after a restart it was almost empty and calibrating the battery did not had any effect
so have a try and report afterwards
If, after rooting or more likely that case after flashing a new rom, you often have battery reporting errors (as mentioned above), and re-calibrating the battery along with some steps I will outline for you below will ensure that your battery is getting a full charge, and the battery reporting accuracy is right on. I run my device in performance mode all the time, and with a CPU overclock of 1.25GHz and various tweaks, I have about a day an a half to a day and a quarter of full runtime from my battery. This is with moderate to heavy usage (calls, emailing, text, gaming, web browsing, etc.) so you should have no problems getting acceptable battery performance after following these steps:
1. Take the case off your device (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your device to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your device completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM.
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Sent from my Atari Falcon030