Database Develop

extend batterylife ?

hi..are there any hints on how to keep that poor battery alive as long as possible ? mine only keeps up for a day, even though i dont mess around that much. ive already set all energy saving options to the maximum, but not much of a change yet. is there maybe a energy saving rom or something ? or do u have general hints how i should treat my battery...maybe charge it while the device is off or somethin ?

How old are you???
diesel82 said:
hi..are there any hints on how to keep that poor battery alive as long as possible ? mine only keeps up for a day, even though i dont mess around that much. ive already set all energy saving options to the maximum, but not much of a change yet. is there maybe a energy saving rom or something ? or do u have general hints how i should treat my battery...maybe charge it while the device is off or somethin ?
Click to expand...
Click to collapse
You are kidding right?? Are you the same guy that asked for a software that charged the battery while running in the background??? Lol

using light sensor (auto backlight) lead to using more battery (rather than maximum backlight) (10of10)
i tested it .

charly_mx said:
You are kidding right?? Are you the same guy that asked for a software that charged the battery while running in the background??? Lol
Click to expand...
Click to collapse
no i am not, anyhow : did your mom forget to put beans in your lunch pack ?

[TUTORIAL] How to prepair battery's for 3.0v kernels

Now that the kernel has been unlocked to alow the battery to use the full 4.2-3.0v potential, some people are having issues getting there battery to drain to 3.0 w/o having its protection circuitry kicking in.
Equipment
Multi meter- digita/ analog... doesnt matter, just need to be able to mesure DC voltage downt to atleat 1/10th volt.
Bulb -i personaly use a #194 automotive bulb
Procedure
drain battery as normal untill shutdown.
remove battery
check voltage across the 2 outer lugs ( just for referance )
take bulb, unfold the wire contacts so they stick out, touch them to the outer lugs ( bulb will barely glow its rated for 12v )
ether tape the bulb in place or hold it there ( i just hold it, keeps me from forgetting about it and draining it to low)
recheck votage every few min.
drain it to 2.9-3.0v
reinstall in phone and charge as normal
some batterys may require you to repete it to recondition the protection circuitry.
if you drain it below 2.5v you will need to buy a new battery... YOU HAVE BEEN WARNED!

Awsome thanks!! Do i need to do this everytime i reflash a eom or kernel thats is able to use this feature?
Sent from my SGH-T959 using XDA App

Li-io batterys need to be drained down every once in a while. Most experts recomend draining to 3.0v about every 30 cycles....
Sent from my GT-I9000 using XDA App

t1h5ta3 said:
Li-io batterys need to be drained down every once in a while. Most experts recomend draining to 3.0v about every 30 cycles....
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Lets all break our batteries yay!!!!!
Sent from my SGH-T959 using XDA App

t1h5ta3 said:
Now that the kernel has been unlocked to alow the battery to use the full 4.2-3.0v potential, some people are having issues getting there battery to drain to 3.0 w/o having its protection circuitry kicking in.
Equipment
Multi meter- digita/ analog... doesnt matter, just need to be able to mesure DC voltage downt to atleat 1/10th volt.
Bulb -i personaly use a #194 automotive bulb
Procedure
drain battery as normal untill shutdown.
remove battery
check voltage across the 2 outer lugs ( just for referance )
take bulb, unfold the wire contacts so they stick out, touch them to the outer lugs ( bulb will barely glow its rated for 12v )
ether tape the bulb in place or hold it there ( i just hold it, keeps me from forgetting about it and draining it to low)
recheck votage every few min.
drain it to 2.9-3.0v
reinstall in phone and charge as normal
some batterys may require you to repete it to recondition the protection circuitry.
if you drain it below 2.5v you will need to buy a new battery... YOU HAVE BEEN WARNED!
Click to expand...
Click to collapse
Giving it a shot now.

PaiPiePia said:
Lets all break our batteries yay!!!!!
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
you will only break the battery by trying to drain to 2.5 or below.
3.0v is normal for a li-io battery.
this isnt new technology, were not doing any thing ground breaking. if anything were playing catchup. thank you samsung...

I am still a bit reluctant, however I am willing to proceed with more detail. If you can explain how exactly it works, it will make me feel more confident in doing so. I am not afraid at all in draining the battery with a bulb which I already picked up at Auto Zone, a 194 but this one is a 14v, all they had, and do know how to use a meter, ( am a low voltage installer, go ADT!)
So I was looking for more specifics. How does the kernel then register that the battery can now be used to 3v, etc... If you do know, if not that fine too
Just like to know how things work basically, and how it works.
Thanks!

Which kernels support 3.0v?
Sent from my SGH-T959 using XDA App

Look at eugene's a13 a14 and I think his new one too.

Well just drained the battery to 2.98v and put it on charge now. Cant get it to boot yet, even though after a minute of charging it was back at 3.3 v, Strange? ANyway Im going to let it charge some more and try to turn it on while its still plugged in.

t1h5ta3 said:
Li-io batterys need to be drained down every once in a while. Most experts recomend draining to 3.0v about every 30 cycles....
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Can you site one of these experts?
-bZj
via XDAapp

So i have come to the conclusion that all thougj this does work to drain your battery the modded kernel does not work. I have not seen an increase in battery life at all. Which i am very dissapointed in.
Sent from my SGH-T959 using XDA App

jzero88 said:
So i have come to the conclusion that all thougj this does work to drain your battery the modded kernel does not work. I have not seen an increase in battery life at all. Which i am very dissapointed in.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Has Nothing to Do with the Kernel MOd... It's the Damn Kernel Clock cycles and sticking at high speeds when sleeping... I've said this many of time already & nobody listens..
OVERKILL Kernel was the First kernel that fixed this issue, so I'm not sure why you're disappointed? the issue was never fixed to start with until now, & even then you only saw a few hours at most with the 3.0V mod..
If it's Reading 3.30v then the Mod is working Correctly as by default it's set to 3.60V, in this case it's just a matter of dropping the Calculations for the battery down a bit more to get the 3.0v setting

eugene373 said:
Has Nothing to Do with the Kernel MOd... It's the Damn Kernel Clock cycles and sticking at high speeds when sleeping... I've said this many of time already & nobody listens..
OVERKILL Kernel was the First kernel that fixed this issue, so I'm not sure why you're disappointed? the issue was never fixed to start with until now, & even then you only saw a few hours at most with the 3.0V mod..
If it's Reading 3.30v then the Mod is working Correctly as by default it's set to 3.60V, in this case it's just a matter of dropping the Calculations for the battery down a bit more to get the 3.0v setting
Click to expand...
Click to collapse
Alright, finally someone who knows something about something
Well unfortunately I was unable to read through every post in the forum, but did not know of this issue. Thanks for dropping some knowledge that way I can reflash the new Kernel when I get home and, see better battery life, and watch some dragons.
Hope you didn't take my post the wrong way, by all means you are a legend among the this forum eugene and will always use your kernels, roms, etc.. With that said I might start my own thread to consolidate all of this battery questions, problems, answers etc. Thanks again eugene!!

jzero88 said:
Alright, finally someone who knows something about something
Well unfortunately I was unable to read through every post in the forum, but did not know of this issue. Thanks for dropping some knowledge that way I can reflash the new Kernel when I get home and, see better battery life, and watch some dragons.
Hope you didn't take my post the wrong way, by all means you are a legend among the this forum eugene and will always use your kernels, roms, etc.. With that said I might start my own thread to consolidate all of this battery questions, problems, answers etc. Thanks again eugene!!
Click to expand...
Click to collapse
All good man... I've just stated this a few already is all, lol....
But, with that being said, I know the Mod is working then, and I just need to do a few more adjustment to the source codec and fix a few Calculations to get us down more to the correct settings..
Thanks for Posting the 3.30V though, as this give more to go on, and I was waiting for true data reports before lowering it anymore to keep from brick batteries
~Eugene

NVM - Wrong place to post

Muffin-Factory said:
NVM - Wrong place to post
Click to expand...
Click to collapse
Wrong Thread & no it's not needed with the Latest Kernel.

eugene,
So I just flashed the new Kernel, working flawless so far, but am at 60% battery, and have a voltage of 3700 mV. Not sure if that's where the voltage should be at that percentage. You wouldn't happen to have a chart, or know what voltage should be giving what battery percentage.
Should I try draining my battery again down to 3.ov since I just flashed the new kernel?
Thanks

eugene373 said:
Wrong Thread & no it's not needed with the Latest Kernel.
Click to expand...
Click to collapse
LMFAO!!!!!!

jzero88 said:
eugene,
So I just flashed the new Kernel, working flawless so far, but am at 60% battery, and have a voltage of 3700 mV. Not sure if that's where the voltage should be at that percentage. You wouldn't happen to have a chart, or know what voltage should be giving what battery percentage.
Should I try draining my battery again down to 3.ov since I just flashed the new kernel?
Thanks
Click to expand...
Click to collapse
It's based on the init of the battery Calculations.. So if the Calculations are wrong it will report odd until there fixed... Should be fixed in the Kernel I'm running though... Will be Posting the Kernel shortly & now is Marked Stable for all at this point...
Charts? lol, not unless I boot back into linux.. I'll get the charts Posted when I can so everyone can do reporting on it.

Battery Monitor Widget mAh battery capacity indicator

You're probably familiar with Battery Monitor Widget. It's such a great tool, it can't go unnoticed in the Play Store...
Anyway. This app has got a nice feature called Calibration. It's actually a sub-program.
What this thing does is it estimates the miliamps (capacity) your phone's battery can hold, based on the logging the app does.
So, in order to find out what capacity your battery is able to hold (now, after some months of usage), you need to do this. Install Battery Monitor Widget from the Play Store, start it and :
1) Go to Settings - History and check all the boxes
2) Under History, set the "History update rate" to 10 minutes and the "History size" to 4MB
3) Under Monitoring, check "Monitor without widget"
And... that's pretty much all the settings you need to change in order to accomplish what I explained above.
Now, let your battery finish ~5 charging cycles (let it drain to 15%, then charge it back up to 100%), but with the phone turned on, not off!
I only did 2 charging cycles, and the app showed the same value it showed after 5 charging cycles... so... I'm not sure, but 5 charging cycles should be more than enough for the application to get a concrete read on the battery's capacity.
Now, when you're ready to find out... Enter Battery Monitor Widget app and, on the bottom, you'll see several tabs : History, Estimates, Calibration, Usage, Stats. Open Calibration and... see for yourself.
Post your results here. I'm curious to see whether this app reads the battery right or not, and, if it does get it right, how good your battery does after some usage. State for how long have you been using your phone and the capacity BMW reads. Even a screenshot, maybe .
----------
Oh... before some admin decides to close this thread because he thinks it's a duplicate of another thread... ask . You may not be right every time...

What do you really want to achieve with this? Now the thread no. 3 where you beg for test results by other members. But wouldn't your problem much easier be solved if you by a new battery?

ThaiDai said:
What do you really want to achieve with this? Now the thread no. 3 where you beg for test results by other members. But wouldn't your problem much easier be solved if you by a new battery?
Click to expand...
Click to collapse
Sure, it would be. But I don't really wanna give $20 away that easily. And also, perhaps the app doesn't read the battery's capacity correctly... which would imply my battery isn't dying, as I think.
Besides, perhaps you could be interested in your own battery's performance.
Now, sorry if my reach for help has disturbed you . You are not compelled to help me.

I just got an extended 5000mAh battery today. I'll set BMW up and report back after a couple of cycles.
Sent from my GT-N7000 using xda app-developers app

joey_oggie said:
I just got an extended 5000mAh battery today. I'll set BMW up and report back after a couple of cycles.
Sent from my GT-N7000 using xda app-developers app
Click to expand...
Click to collapse
You do that!

Finished the first cycle (initial full charge after buying the battery > discharge to 9% > full charge) and got an estimation of 5607mAh and 22%.accuracy which seems somewhat right.
Here are some screenshots of BMW and battery usage from Settings.
http://db.tt/ZzHhl2OD
Update: the estimation keeps increasing as long as the phone is plugged in the AC charger, even though battery says it's full. It's 5737mAh now. % remains the same. Maybe because the battery is new and still calibrating itself or something.
Sent from my GT-N7000 using xda app-developers app

[Q] battery gauge problem

hello
after flashing a few roms, my battery gauge is messed up.
the things i noticed, when my ace turns off deu to low power. the gauge shows 0%.
but when my ace shuts it self down and i plug in the wall charger. the battery gauge shows me a percentage around 75%.
the things i have done to solve this problem is deleting battery stats by cwm and a calibration app nothing did solve the problem.
also i have let the battery drain to zero and then charge it up to 100 and let it drain to zero again. also that didnt solve my problem.
so i flashed back the stock rom by odin. also not solving the problem.
is ther another way to solve the problem

Get a new battery.:thumbup:
Sent Via XDA™ Premium

The problem is not with your battery. It's with the battery notifier in the ace. It works well for a time and then goes absolutely crazy. Whenever your battery gets low, about 10% for example, connect the charger and charge blindly for 3 hours. Don't worry about the 100% notification. Try your battery now. It should be fine now. But if you're using battery extender kernel, there's a bug in it that brings down the battery for 50% in a short time after using.
Sent from my GT-S5830 using xda premium

Venomous Viper 119 said:
The problem is not with your battery. It's with the battery notifier in the ace. It works well for a time and then goes absolutely crazy. Whenever your battery gets low, about 10% for example, connect the charger and charge blindly for 3 hours. Don't worry about the 100% notification. Try your battery now. It should be fine now. But if you're using battery extender kernel, there's a bug in it that brings down the battery for 50% in a short time after using.
Sent from my GT-S5830 using xda premium
Click to expand...
Click to collapse
i`am on stock gingerbread, the phone is about two years old. i also noticed that when i turn of my phone and pull the battery out for about three minutes en then put it back in the percentage is higher. so i do think that the battery gauge is messed p but when i use a calibration app to solve it, it gets worse or doesnt change. when i use code *#*#4636#*#* the status of my battery is good. im thinking to buy a new battery but i doubt that it would solve my problem.

Calibration is all fake. Do as I said and you'll definitely witness the results.
Sent from my GT-S5830 using xda premium

Venomous Viper 119 said:
Calibration is all fake. Do as I said and you'll definitely witness the results.
Sent from my GT-S5830 using xda premium
Click to expand...
Click to collapse
Hi, I have the same problem with the ace of my wife. When I charge it, it says 100% after 10 min charging !
And when I use it not charging, it drops down ...
I try to let it charge longer, but is that sure that the battery continue charging even if the notifier indicates 100% ?
I'm on [ROM] CM7.2-DEMOCRACY FINAL EDITION .. is there also a kernel to change to help ?
Thanks for your answers, by default I will let it charge for 3h.
PS : is there an app to check the battery life ?

Venomous Viper 119 said:
Calibration is all fake. Do as I said and you'll definitely witness the results.
Sent from my GT-S5830 using xda premium
Click to expand...
Click to collapse
i did what you said and it seems to solve the problem step by step

Liell said:
Hi, I have the same problem with the ace of my wife. When I charge it, it says 100% after 10 min charging !
And when I use it not charging, it drops down ...
I try to let it charge longer, but is that sure that the battery continue charging even if the notifier indicates 100% ?
I'm on [ROM] CM7.2-DEMOCRACY FINAL EDITION .. is there also a kernel to change to help ?
Thanks for your answers, by default I will let it charge for 3h.
PS : is there an app to check the battery life ?
Click to expand...
Click to collapse
in dialer u must enter the code *#*#4636#*#* there will appear 4 tabs there is one for battery tap it and you wil see the health of youre battery.

Guys, forget about battery level notification, etc. Any app doing so would collect the info from the android itself. Just do as I said. Everything will be fine.
Sent from my GT-S5830 using xda premium

I've the same issue. I charged it for 3 hours, it's not fine, it goes to 50% in about 15 minutes, and when I reboot my Ace, it drop to 15% !
I noticed that when I turn it off and charge it, the green battery indicator is at 80%...
Any idea ?
I tried differents ROM such as CM10.1 CM10 CM9,PAC, same issue.

I bought my wife a new battery @2000mA and she lasts 2 days now, so the answer seems to be the battery-life ...

Liell said:
I bought my wife a new battery @2000mA and she lasts 2 days now, so the answer seems to be the battery-life ...
Click to expand...
Click to collapse
its a bit risky! u r using 2000mA for 1350mA phone.

Haer said:
I've the same issue. I charged it for 3 hours, it's not fine, it goes to 50% in about 15 minutes, and when I reboot my Ace, it drop to 15% !
I noticed that when I turn it off and charge it, the green battery indicator is at 80%...
Any idea ?
I tried differents ROM such as CM10.1 CM10 CM9,PAC, same issue.
Click to expand...
Click to collapse
CM 9, 10.1,PAC consume battery like hell, but not that much also.
If there r such huge drops that too after charging the fone for 3 hrs then i guess there is a problem with the battery.
Sent from my GT-S5830 using xda app-developers app
---------- Post added at 04:36 AM ---------- Previous post was at 04:35 AM ----------
Mandark52 said:
its a bit risky! u r using 2000mA for 1350mA phone.
Click to expand...
Click to collapse
Yup u can use without any problem untill voltage n other parameters are as per requirements...
Sent from my GT-S5830 using xda app-developers app

Yes I thing the battery is dead, it's slightly inflated...

I too have the crazy battery problem, but funny thing is if i were to ignore the indicator and just use it from a 3hr-full charge till it dies off, i could achieve 2.5hours of internet surfing (wifi not 3g). To me this is good enough, all calibration fixes do not work for me. Any suggestions?
PS: I have the system time problem too with S'perience Rom, Eg. when i shut down the phone at 1pm to remove the simcard, after booting up the phone the time shows 11am. This happened to me more than 5 times this week. I dono if it's the rom or the battery that gives this problem. I dono about how it was when running stock rom because this phone does not belong to me. Any help is much appreciated.

jeromejeremytay said:
I too have the crazy battery problem, but funny thing is if i were to ignore the indicator and just use it from a 3hr-full charge till it dies off, i could achieve 2.5hours of internet surfing (wifi not 3g). To me this is good enough, all calibration fixes do not work for me. Any suggestions?
PS: I have the system time problem too with S'perience Rom, Eg. when i shut down the phone at 1pm to remove the simcard, after booting up the phone the time shows 11am. This happened to me more than 5 times this week. I dono if it's the rom or the battery that gives this problem. I dono about how it was when running stock rom because this phone does not belong to me. Any help is much appreciated.
Click to expand...
Click to collapse
Try a full discharge and then plug your phone until it is fully charged, finally without unplug it boot into CWM and wipe battery stats, finally reboot and charge it until 100%

[TUT] Extending Battery Life

So our phone has a lithium Ion battery right? Well heres some things most people do not know about this type of battery.
Sorry if this has been posted before!
Li-ion batteries begin to degrade as soon as they start to be used.
One cycle is based on a 100% depth of discharge (e.g. discharging from full to empty), the potential number of charges can be increased by not allowing the battery to become fully discharged before topping it up. For example, allowing a fully charged battery rated at 500 cycles to drop to 50% before recharging could potentially triple the number of charge/discharge cycles to 1500 before the battery capacity degrades, thus increasing the batteries overall lifespan. However, this also means the battery will need to be plugged in more regularly.​
This means that keeping the phone topped up, and not waiting for full discharges will potentially extend the battery life of the phone.
In no way am i saying this a definite thing, as i do not know, and this wont extend your screen on time if that's what your after, it will offer you the same amount of screen on time, for an extended period of time.
So to conclude, charging little and often can extend the life of your battery. In theory anyways. I read up on this from a few articles and websites, too many to reference, but this is the combined knowledge i found.

There are still a lot of people who thinks that you must discharge to empty.
This was required when NiCd batteries were in use. Li-Ion are different.
Thanks for posting that! :highfive:

I have read on Note 3 forums how people cry about their battery life.
Thwir new software upgrade lowered thwir screen ON time to "only" 4-5 hours from 6-7. Whereby I am more then happy if i get 2-3 hours of screen time.
It makes me question my battery and software...
Sent from my OptimusX4HD using xda app-developers app

Zhus06 said:
I have read on Note 3 forums how people cry about their battery life.
Thwir new software upgrade lowered thwir screen ON time to "only" 4-5 hours from 6-7. Whereby I am more then happy if i get 2-3 hours of screen time.
It makes me question my battery and software...
Sent from my OptimusX4HD using xda app-developers app
Click to expand...
Click to collapse
They have 3200 ma battery, we have 2150. They have super amoled screen, we have IPS LCD, they have S800 soc, we have tegra 3. Enough said.
Sent from my LG-P880 using XDA Premium 4 mobile app

I normally get around 3-4 hours screen-on time.

[email protected] said:
They have 3200 ma battery, we have 2150. They have super amoled screen, we have IPS LCD, they have S800 soc, we have tegra 3. Enough said.
Sent from my LG-P880 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
You could just the mention the difference of ma in each, that alone should be enough

MidnightDevil said:
You could just the mention the difference of ma in each, that alone should be enough
Click to expand...
Click to collapse
Guys you would be jealous of this. But see this screenshot. My phone is now 13 months old. I m on the CM 11 nightly. This is the Jan 15th build.

prem911 said:
Guys you would be jealous of this. But see this screenshot. My phone is now 13 months old. I m on the CM 11 nightly. This is the Jan 15th build.
Click to expand...
Click to collapse
Please just don't Post it in each thread here
Sent from my LG-P880 using XDA Premium 4 mobile app

sPEADy said:
Please just don't Post it in each thread here
Sent from my LG-P880 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Friend, I wrote it looking at the topic of the thread. Hope this will help people who are looking to optimise their battery by tweaking some settings in CM 11.
At least helpful to those who have subscribed to this thread !

@sPEADy and @prem911 what ROM + kernel combos are you guys using ? :good:

@sprite048 I am using the nightly form 07th January.......and all defualt CM did'nt change anything

best battery saving strategy:
1) turn off wifi and 3g
2) put down your phone and pick up a book to read
3) dont touch you phone, use the landline to make call and laptop for messaging
right, speady?
Just kidding, WiFi and 3G are actually your battery killer. I'm currently using CM11 and can have 3 hours light gaming (Plague Inc.) with 700MHz CPU and 200MHz GPU settings. Another tip is dont use background process (such as news, email or even swiftkey; Google location accessing as well), they do wake your phone up regularly to sense if you have connection with the Internet Lord.

sPEADy said:
Please just don't Post it in each thread here
Sent from my LG-P880 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
But screen time?
Thanks

klbterminator said:
best battery saving strategy:
1) turn off wifi and 3g
2) put down your phone and pick up a book to read
3) dont touch you phone, use the landline to make call and laptop for messaging
right, speady?
Just kidding, WiFi and 3G are actually your battery killer. I'm currently using CM11 and can have 3 hours light gaming (Plague Inc.) with 700MHz CPU and 200MHz GPU settings. Another tip is dont use background process (such as news, email or even swiftkey; Google location accessing as well), they do wake your phone up regularly to sense if you have connection with the Internet Lord.
Click to expand...
Click to collapse
Wrong I do use my phone a lot and have pretty bad signal at my supermarket where I work and always have 3g on at work and wifi at home.
tiflao said:
But screen time?
Thanks
Click to expand...
Click to collapse
I do get 2 and half hours of screen time with 2 days usage. I did post in Carbon Rom 4.2.2 thread 4 hours of screen on time few months back so I do use my phone a lot when needed.
http://forum.xda-developers.com/showthread.php?p=43786162#post43786162