[Q] Replacing i9100 battery - Galaxy S II Q&A, Help & Troubleshooting

Hi,
I'm a new poster @ xda but have been a fan for quite a while.. not really the forum type so I haven't posted.
I have a question about replacing the battery in an i9100 (coming from the stock battery to a Replacement 3.7V 3500mAh Battery bought off of dx.com (sku: 73784).
For a while now, I have been unable to calibrate my battery correctly.. or maybe it's just my battery itself that's been giving me less than 4 hours idle.
I would like to know if there are any steps I should take before inserting the new battery... if anyone else has done this before and is reading this post I'd be very grateful for some advice.
I don't want to screw up the battery stats and the new battery itself.
Currently running:
Android version: 4.2.1
Baseband version: I9100XXLQ6
Kernel version: 3.0.15-CM-g53f5eb1
[email protected] #1
CM version: 10.1-20121223-NIGHTLY-i9100
Thanks!

U cant calibrate the battery by just deleting the battery stats.. just leave it for a week or 2. Then it should calibrate on its own. I m using andriod phones from 2 years i never tried to calibrate the battery i just ignore that. For me sometimes the battery percentage suddenly moves up by 1 or 2% if kept idle then starts decreasing, dunno why till today damn sure its not fake charging. U can try deleting the battery stats and rebooting to make sure it s writing the new battery stats. But it never works.

Prashanthme said:
U cant calibrate the battery by just deleting the battery stats.. just leave it for a week or 2. Then it should calibrate on its own. I m using andriod phones from 2 years i never tried to calibrate the battery i just ignore that. For me sometimes the battery percentage suddenly moves up by 1 or 2% if kept idle then starts decreasing, dunno why till today damn sure its not fake charging. U can try deleting the battery stats and rebooting to make sure it s writing the new battery stats. But it never works.
Click to expand...
Click to collapse
So you are saying it doesn't matter what capacity battery i am switching to, it will calibrate by itself?

Yes after few charging discharging cycles... Its will calibrate automatically. :thumbup:
And ya just in case... You may try battery calibration app from play store
Sent from my GT-I9100 using xda premium

paper_heart_21 said:
Yes after few charging discharging cycles... Its will calibrate automatically. :thumbup:
And ya just in case... You may try battery calibration app from play store
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Thanks, I'll try 2-3 cycles and see what happens :good:

hey man i was also thinking of switching to similar kinda battery like yours. But i dont think it is 3500ma. So could you post how long the battery last after using it for few days??

If you're on ICS or JB, you don't have calibrate your battery because every time you charge the battery to 100% all your data and stats are deleted and the service begins to collect info again. You read all about it here and here.
Battery calibration is a myth and nothing more for ICS/JB users.

omglol22 said:
Hi,
I'm a new poster @ xda but have been a fan for quite a while.. not really the forum type so I haven't posted.
I have a question about replacing the battery in an i9100 (coming from the stock battery to a Replacement 3.7V 3500mAh Battery bought off of dx.com (sku: 73784).
For a while now, I have been unable to calibrate my battery correctly.. or maybe it's just my battery itself that's been giving me less than 4 hours idle.
I would like to know if there are any steps I should take before inserting the new battery... if anyone else has done this before and is reading this post I'd be very grateful for some advice.
I don't want to screw up the battery stats and the new battery itself.
Currently running:
Android version: 4.2.1
Baseband version: I9100XXLQ6
Kernel version: 3.0.15-CM-g53f5eb1
[email protected] #1
CM version: 10.1-20121223-NIGHTLY-i9100
Thanks!
Click to expand...
Click to collapse
You should be getting more than 4hrs idle. Try better battery stats to check the wakelocks and cpu spy to see if your device is deep sleeping
Sent from my Nexus 7 using xda premium

pasanjay said:
hey man i was also thinking of switching to similar kinda battery like yours. But i dont think it is 3500ma. So could you post how long the battery last after using it for few days??
Click to expand...
Click to collapse
Sure thing. I've been running the battery for 24 hours and I'm at 80% left. Medium usage.

Well this is nice. The extended battery gives me almost three days of usage. And this is the cheap 3500mah from DX. I just hope it doesn't blow up
.. I also reset the fuel gauge chip.
Sent from my GT-I9100 using Tapatalk 2

Anker battery is what I use.. It gives me extra 1 day of usage.. better than the stock

Related

NOTICED WEIRD BATTERY STAT i9100!!

Hi guys I have noticed a strange Battery status..
I had my battery percentage showing above 50%
Then I switched off the phone,
took the battery out for a few seconds,
put back the battery and switched on the phone.
The battery was down by 15-20%
Then it started to gain a few percentage (upto 5%) of battery without me putting it to any kind of charging point/data cable.
What kind of weird thing is this in the Galaxy s2.
I am using Android 2.3.5
Simple&Clean v1.3
Speedmod k2-16
I have also attached a screenshot of it.
Please tell me why is this happening cuz this happens every time i take my battery out.
Thanks
nah, its ok. just a bug which happens sometimes. happened to me many many times.
Or if you are constantly overcharging the battery it will happened .
stian230 said:
Or if you are constantly overcharging the battery it will happened .
Click to expand...
Click to collapse
You can't overcharge if your phone is working right. Its probably just drift in the monitoring circuit.
Sent from my GT-I9100 using Tapatalk
It's due to Samsung's built in battery calibration. When flashing firmware cwm can throw battery stats off, but after using the ROM for a while it will auto correct itself. Nothing to worry about dude!
Sent from my ICS themed Revolution ROM GT-I9100 using xda premium
hey djsherry, did u figure this problem out? because I have the same and if you (and others) have a close look at your screenshot your phone shows the same amount of time both for elapsed and remaining time on battery!!! Thats a weird situation, I have read hundreds of threads and still couldnt figure that out! Anyone??? Must have a problem with the hardware (battery monitoring) or with the battery itself?!?
Search before posting please, nothing weird about this. It is well documented well understood behavior.
Delete.
Its common, resetting your battery gauge will reduce this to some extent
#*posted on the move *#

[Q] Do I need a new battery?

Hey guys,
I have been running unnamed rom lately, but on any other rom including stock. My battery lasts for like 8 hours with little use and 4 hours with moderate use. When I see what is draining my battery it looks normal as the display uses the most, but I only have it at 30% brightness most of the time I have insurance should I see if I can get a new battery? Or any other tips?
Can you post a pic of your battery usage?
Have you tried to calibrate the battery yet?
Sent from my SGH-I777 using XDA
kingsfan917 said:
Hey guys,
I have been running unnamed rom lately, but on any other rom including stock. My battery lasts for like 8 hours with little use and 4 hours with moderate use. When I see what is draining my battery it looks normal as the display uses the most, but I only have it at 30% brightness most of the time I have insurance should I see if I can get a new battery? Or any other tips?
Click to expand...
Click to collapse
Many things could cause battery drainage, such as oc-ing. You could find the original Samsung battery on eBay for a cheap price. Before buying one, try doing the following:
Clear OC/UV settings (i.e. put to defaults)
Download Battery Calibration by NeMa (on the Play Market)
Charge your phone and wait until it reaches 100%*
Tap on "Battery Calibration" and done
Once calibrated, use your phone as you normally would until the battery dies. Only when it dies you can charge it. You can charge as you please from then on.
Note: If it does not reach up to 100%, go to CWM and clear battery stats.
kingsfan917 said:
Hey guys,
I have been running unnamed rom lately, but on any other rom including stock. My battery lasts for like 8 hours with little use and 4 hours with moderate use. When I see what is draining my battery it looks normal as the display uses the most, but I only have it at 30% brightness most of the time I have insurance should I see if I can get a new battery? Or any other tips?
Click to expand...
Click to collapse
Which other firmwares? Anything UCKK6-based has known documented wifi drain issues.
The usual applies - look in battery statistics, use BetterBatteryStats to hunt wakelocks.
sykoj82 said:
Have you tried to calibrate the battery yet?
Sent from my SGH-I777 using XDA
Click to expand...
Click to collapse
THIS DOES NOTHING ON ANY SAMSUNG GALAXY S DEVICE!
never tried the battery calibration?... does it actually work or no?
have you installed any new apps recently? those apps that use a lot of apps in the background are a pest to your battery life as they usually won't show up in the battery monitor. try disabling your data when not in use and see if that helps. if the current rom you are on does not have a toggle bar with data use the "data enabler widget" by Farproc.

[Q] Battery drain problem - or is it just me?

Hi there,
just in advance: Yes, I have read quite a bunch of battery drain threads, but non of them seemed to help me.
Compared to GB, my SGS2 doesn't even seem to last more than a day in terms of battery life.
Now I wonder - is it just me playing around with (otherwise awesome) CM9 and battery life is actually normal or is there some kind of battery drain going on?
Running CM9 14-04, stock kernel, LPS baseband.
Attached please find BBS stats and other battery stats screenshots.
Help very much appreciated
lunatic54 said:
Hi there,
just in advance: Yes, I have read quite a bunch of battery drain threads, but non of them seemed to help me.
Compared to GB, my SGS2 doesn't even seem to last more than a day in terms of battery life.
Now I wonder - is it just me playing around with (otherwise awesome) CM9 and battery life is actually normal or is there some kind of battery drain going on?
Running CM9 14-04, stock kernel, LPS baseband.
Attached please find BBS stats and other battery stats screenshots.
Help very much appreciated
Click to expand...
Click to collapse
Awake over 2 hours, 1 hr 43 min screen on, down to 62%. That's on track for 5.5 hours awake time, and about 4.5 hours screen on time. Looks pretty normal.
You MIGHT be able to squeeze a bit more juice out by playing with your sync and display settings, but that otherwise doesn't look that bad.
ctomgee said:
You MIGHT be able to squeeze a bit more juice out by playing with your sync and display settings, but that otherwise doesn't look that bad.
Click to expand...
Click to collapse
Sync is pretty much off completely and display brightness was on 'auto'...
the graph looks pretty good without gsf and alarm manager wakelocks
Have you tried to re-calibrate your phone? I once messed around with my battery and i lost 70% battery overnight when it was on 100% because i was unplpugging, plugging my phone in randomly.
How do I do that?
Just bought a 2000mA battery and it seems I still got the same 'issue'...
Sent from my GT-I9100 using XDA
lunatic54 said:
How do I do that?
Just bought a 2000mA battery and it seems I still got the same 'issue'...
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
Download battery calibration app from play store, put phone on charge, wait untill will be 100% charged, open battery calibration app, click calibrate, unplug you phone. Done.
lunatic54 said:
How do I do that?
Just bought a 2000mA battery and it seems I still got the same 'issue'...
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
Did you try to wipe your battery stats? Also, I noticed that playing around flashing the Roms, requires 2-3 full charging cycles before the battery was "stable" again
I've also read the following but didn't try it (I imagine it does the same than wiping the battery stats in the recovery, but you never know, you can try it):
Delete batterystats.bin in data/system, after full charging (with Rootexplorer or another app)
Then, use it until to 90%, and full charging.
Good luck!
When is it a good idea to wipe battery stats? When it's empty or at full charge?
Sent from my GT-I9100 using XDA
The CM9 has some battery drain problems because is still developing maybe try wiyth another rom and see if the problem remains
lunatic54 said:
When is it a good idea to wipe battery stats? When it's empty or at full charge?
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
when its full charge. Try to play with other ROM+kernel, i did this and solved the battery drain issue....
Good Luck
M90 said:
The CM9 has some battery drain problems because is still developing maybe try with another rom and see if the problem remains
Click to expand...
Click to collapse
Stats seem fine to me. Your phone shouldn't drain much when idle, but once that big screen is lit up the power drains much faster. The SGS2 stock battery is not huge to begin with either. Your 2000mah will be better though, especially after using it for a few cycles. You can also try flashing a different stock kernel or custom kernel (Siyah, etc).
Sent from my GT-I9100 using Tapatalk 2
Thanks guys!
So charged my 2000mA battery up to 100% now and wiped the battery stats. Hope this helps.
I really wanted to stick to CM9, because I don't wanna do a factory reset every couple of days when flashing other ROMs, because I'm tired of setting up all my stuff over and over again...
Are the other ROMs really that much better? Thought that CM9 would be best, because most popular...
Or could it be the baseband/modem too?
I am on LPS right now... I've searched the forums forever, but can't seem to find an answer for:
What is the best baseband/modem for battery life?
lunatic54 said:
Or could it be the baseband/modem too?
I am on LPS right now... I've searched the forums forever, but can't seem to find an answer for:
What is the best baseband/modem for battery life?
Click to expand...
Click to collapse
ANSWER = non use whats best for your location network and phone .
jje
So I'm using Vodafone in Germany... anyone else?

[Q] Battery life issues

Hello
I've been having some battery problems with my sgs2. I've bought it in june of 2011, it is my first smartphone and I was immediately pleased with it. great phone, everything working properly. since it was my first phone I was a light user and the battery could last me 2 days, sometimes it even got to last 3 days. However, at the beginning of the year I felt a sudden drop in battery performance, coming to last only 12-15 hours with light use. by this time I became more of a medium-heavy user and under "normal" use the phone would be dead at 10 hours, maximum.
I bought a new battery, official samsung 2000 mAh, and the performance became slightly better. It would at least last a day of work, but the performance was never as good as the original 1650 mAh battery when I first bought the phone.
by this time I began experimenting with ROMs, ressurection remix, miui, and now pfittech. but as time passes the performance is always dropping and today something strange happened. I locked my phone at 17% of battery, and after a while I checked it and the battery was at 18%. I checked again and is now at 19%. Right now it's 21%. What the hell?
can anyone help me? any help would be much appreciated.
p.s. i've tried calibrating the battery and I've read in the forums that on JB it's not necessary because the phone now clears battery stats when they reach 100%. I've also changed the stats with extweaks to absolutely no effect. I've been reading many topics on this but nothing quite seems to fit my situation.
mate u have to reset gauge in extweak then kill ur battery and pull off for 5 min then charge that should do
Sent from my GT-I9100 using xda premium
stopro said:
mate u have to reset gauge in extweak then kill ur battery and pull off for 5 min then charge that should do
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Thank you for your advice I will try that. I'll let you know if it works. btw, when you say kill the battery you mean let it drain to zero right? sorry if dumb question, I'm a newb at this hehe

CM10.1 battery drain

hello fine people of XDA i'm having a few problems with the CM10.1 nightleys with battery drain. one of my friends has flashed this ROM and he says the battery life is great but i flashed and i went from 100% to 70% in 10 mins when plugged into the mains.i am using the anker 1900Mah battery and i'm wondering if it is the battery thanks in advanced
blazingmatty said:
hello fine people of XDA i'm having a few problems with the CM10.1 nightleys with battery drain. one of my friends has flashed this ROM and he says the battery life is great but i flashed and i went from 100% to 70% in 10 mins when plugged into the mains.i am using the anker 1900Mah battery and i'm wondering if it is the battery thanks in advanced
Click to expand...
Click to collapse
Use better battery stats to check the wakelocks and cpu spy to see if your device is deep sleeping and if you just flashed it give it at least 3 battery cycles before you judge the battery life..
Sent from my Nexus 7 using xda premium
Same experience. My battery can't even last a full day on just standby, with default gapps installed. Tried with both anker and stock batts. Think i will switch back to cm10 for now until a usable siyah kernel is released for 10.1.
shockingpants said:
Same experience. My battery can't even last a full day on just standby, with default gapps installed. Tried with both anker and stock batts. Think i will switch back to cm10 for now until a usable siyah kernel is released for 10.1.
Click to expand...
Click to collapse
Did you try what I suggested?
Sent from my Nexus 7 using xda premium
hi
kilometers4 said:
Use better battery stats to check the wakelocks and cpu spy to see if your device is deep sleeping and if you just flashed it give it at least 3 battery cycles before you judge the battery life..
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
thanks for the advice i shal give it a go (since 3 battery cycles should pass very quickly)
hi
very quick update the 27/12/12 nightly update is much better battery life wise :victory:
hi
i have taken all the advice and it is all going well battery life is not as good as my old CM9 stable rom i get through the day with about 80 odd percent (i don't have a constant data connection and my phone is basically just for music and talking to friends) but the more recent nightlys are much better for battery thank's to all who commented and i love the rom
battery drain on restart
Hello all
I am using 4.2.1 cm10.1 nightly updates... Today two times i'd restarted the phone battery drained nearly 20-30%. This is ubnormal right?
Later i did downloaded new version and also restarted the phone to check the issue again it ddropped about 30%
I do not know if it is a hardware problem? Battery ?
I ll try to attach screen shot
Thanks in advance
When I was on GB my bat with wifi was awesome. Since ICS wifi eats my device like a mutha.
sent, and now this app cra.........

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