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Suddenly bad battery life = battery gone bad?

Basically, a few weeks ago I flashed assonance 5.0 and my standby battery life was terrible. The battery would die by the time I got out of school which is around 7-8 hours of standby time.
So hoping to solve this problem. I flashed the captivate version of doc's rom and I have the exact same battery life. I have recalibrated the battery many times as well.
Sooo, do you think my battery has gone bad?
And if so, any good places where I could get a spare?
Sent from my SGH-I897 using XDA App

Many have posted eBay has some good deals.
I still suspect that many of these phones were shipped with crap batteries hence the differences with people using the same roms having much different battery life.

cappysw10 said:
Many have posted eBay has some good deals.
I still suspect that many of these phones were shipped with crap batteries hence the differences with people using the same roms having much different battery life.
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Well the thing is that my battery life wasn't terrible before. Or not this bad at least :x
Sent from my SGH-I897 using XDA App

Have you at least tried reflashing to stock to see if the problem is with the roms or with your battery?

Not for an extended period... but the thing is I read through some of the rom threads. And if it was the rom people would be complaining about battery life, but no one is :/
In fact, it is quite the opposite...
Sent from.... "Waiting for Location"...

crazililazn said:
Sent from.... "Waiting for Location"...
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That's awesome.

What, you don't like my phone sig?
Sent from a phone somewhere in the universe

crazililazn said:
Basically, a few weeks ago I flashed assonance 5.0 and my standby battery life was terrible. The battery would die by the time I got out of school which is around 7-8 hours of standby time.
So hoping to solve this problem. I flashed the captivate version of doc's rom and I have the exact same battery life. I have recalibrated the battery many times as well.
Sooo, do you think my battery has gone bad?
And if so, any good places where I could get a spare?
Sent from my SGH-I897 using XDA App
Click to expand...
Click to collapse
kernel related or bad battery!!!!

Well i am using Glitterball's latest kernel before Firebird. Or the stock kernel that came with the Doc's Captivate Rom 7.0
Either way, there has been a huge drop in battery life and I do not think it is kernel related, because on the Assonance 5.0 rom, i was running Setiron's 1.4.7 kernel with the exact same problems with battery life :'(

This is highly dependent on how you have your settings on your phone.
1) Wi-Fi constantly looking for an active network connection? At least have it go to sleep when the phone goes on standby. I only turn mine on at home or otherwise need and have access to it. Otherwise its off.
2) GPS running all the time? Personally, I rarely ever need to use it, but it runs great when I do.
3) Display at recommended brightness or higher? Recommended or less is best as far as saving battery power. I like mine all the way down. Don't need/want it any brighter.
I even tend to use only darker wallpapers as bright and lighter colors pull more power on AMOLED screens. This makes a little bit of difference. How much I don't know, but I do know that it does. Sometimes the above settings like to change on you. It's a good idea to check 'em once in a while.
While it's usually always around 60% full when I go to bed, I still charge my cell every night.
I have found that the speedmod kernel is real good for conserving battery power. Not downing other kernels as they're all real good. Speedmod handles battery consumption better in my experience.
Have you installed any new software that might be accessing the network checking for updates/feeds, etc?

Cozmo1 said:
This is highly dependent on how you have your settings on your phone.
1) Wi-Fi constantly looking for an active network connection? At least have it go to sleep when the phone goes on standby. I only turn mine on at home or otherwise need and have access to it. Otherwise its off.
2) GPS running all the time? Personally, I rarely ever need to use it, but it runs great when I do.
3) Display at recommended brightness or higher? Recommended or less is best as far as saving battery power. I like mine all the way down. Don't need/want it any brighter.
I even tend to use only darker wallpapers as bright and lighter colors pull more power on AMOLED screens. This makes a little bit of difference. How much I don't know, but I do know that it does. Sometimes the above settings like to change on you. It's a good idea to check 'em once in a while.
While it's usually always around 60% full when I go to bed, I still charge my cell every night.
I have found that the speedmod kernel is real good for conserving battery power. Not downing other kernels as they're all real good. Speedmod handles battery consumption better in my experience.
Have you installed any new software that might be accessing the network checking for updates/feeds, etc?
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Click to collapse
1)I always had my Wifi sleep policy on never. So its not what is affecting the battery life
2) Never have GPS on unless i need it. Heck, when i need it, it never works.
3) nothing that i didnt have before.
Basically, I haven't changed anything to cause the decrease in battery life.

Your two biggest drains on battery are WiFi (especially when consistently seeking - any new access points where you leave it on standby all day?) and your display. Could it be your battery? Sure. Go exchange it at AT&T. They shouldn't have a problem exchanging it for you
Sent using XDA app on a modified Assonance 5.2 ROM

Cozmo1 said:
Your two biggest drains on battery are WiFi (especially when consistently seeking - any new access points where you leave it on standby all day?) and your display. Could it be your battery? Sure. Go exchange it at AT&T. They shouldn't have a problem exchanging it for you
Sent using XDA app on a modified Assonance 5.2 ROM
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Well the thing is. I have never had this battery life with my Wifi settings left untouched. So yeah, i will probably get a new battery from AT&T tomorrow and report back if it was the battery or not :]

give this thread a quick read, its more based around 2.2.1 roms but you could find some good information
http://forum.xda-developers.com/showthread.php?t=884816

[Q] Looking for the most battery efficient rom/kernel combo

I am going to be traveling in Asia for a month. I don't need any of bells and whistles and I want a phone that is very stable, very energy efficient and GPS camera definitely has to works. Which rom/kernel will you recommend? any setting tricks? Thanks
I have tried Rod's MiuiMod, CM6.1.1, CM7 and many others.
I found that CM7 + WM 1/6/2011 kernel gives me the best battery life, but CM7 is still not in stable stage yet.

I have had the most battery life with Enomthers Rom, currently he is away on personal responsibilities but his latest stable rom is very battery efficient!

I have no recommendation as to kernel/rom combinations, but for long battery life I use this:
http://www.amazon.com/Seidio-Innocell-Battery-Google-Replacement/dp/B003FSTBP4/ref=sr_1_2?ie=UTF8&qid=1296521084&sr=8-2
I got really tired of barely making through a day without having to recharge so I bought one of these. I got mine for $61 on Amazon and free shipping. It's 3200mah which is over twice the stock battery. My first full charge/discharge cycle I got over 34 hours of moderate usage and it's supposed to get better after a few charge cycles. It does make your phone about 30-40% thicker (comes with it's own custom battery cover), but for the battery life you get it's well worth the added thickness. I also find it's a little easier to hold on to.
Anyway, maybe not the solution you're looking for but for me it was well worth the money.
Just my 2 cents.

phburks said:
I have no recommendation as to kernel/rom combinations, but for long battery life I use this:
http://www.amazon.com/Seidio-Innocell-Battery-Google-Replacement/dp/B003FSTBP4/ref=sr_1_2?ie=UTF8&qid=1296521084&sr=8-2
Just my 2 cents.
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That's one big battery Thanks tho, but I want my N1 to stay small.

I second the recommendation for Enomther's. Rock-stable.

I have no combo recommendation cuz I haven't found a really good one yet. Right now I'm using cm6.1 and wild monks kernel. It's been decent for me. But I suggest using set cpu, put on power save mode when you don't use the phone. It'll be there forever. Turn off data connection and gps as well. Also using less like half the animation helps speed up the phone and saves battery too.
Ps I'm combining inexus theme too and their icons plus the animations are amazing! My phone looks colorful as hell!
Sent from my Nexus One using XDA App

spx2000 said:
That's one big battery Thanks tho, but I want my N1 to stay small.
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Lol yea it does add some bulk but it sure is reassuring to know I don't have worry about my battery dying before the day is over. I use my phone a lot and don't have time to really recharge it much and I don't like the idea of carrying extra batteries so this works very well for me.

I haven't done too many Roms, but miui has given me the most battery life out of stock, cm and miui.
I've been travelling and I managed to get 4-5 days with minimal calls and very light usage. If you use it normally with wifi and regular calls, 2-3 days is usually the limit.
Both these numbers are with auto airplane mode during my sleep hours.
Sent from my GT-P1000 using XDA App

What i have heard is that CM7 is 20-30% more efficient with battery life than CM6

Not true
Sent from my Nexus One using XDA App

That really is a personal opinion.
xzr3b0rnzx said:
Not true
Sent from my Nexus One using XDA App
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In my personal opinion, CM7 Nightlies are really stable. After a real heavy usage i.e. playing games, surfing, calls, messages, i get about 15 hours a day.
My phone is fully charged when I leave at 8 and by 8 pm battery will be somewhere between 40 and 45 % left.
Bugs are there with CM7 Nightlies but so far I haven't had any problems with it.

Recently I've been through about 3 roms, and of the three (rod's, micromod's own GB aosp, and leo's GB aosp, leo's gives me the best battery life.
It might be because he incorporated the battery driver, though.

[Q]Battery Life on the current ROMS

Hey guys,
I've been wondering around for a while, and I've pretty much read every single FAQ and major ROM development threads...
But I was wondering if anybody found a "best" ROM for battery!
I've tried a few, and found that Cognition seems to drain the battery pretty quickly... Phoenix 4.5 seemed to last quite a while, but the new 5.2 seems to drain it quite quick now again!
I don't really care if my phone's slow in some parts, but I'd really like it if I could extend the battery even by a little bit... I work 8 hours a day, and my phone has no battery after I finish work (which seems extremely absurd).
I've also tried to do the battery hints and tips in: http://forum.xda-developers.com/showthread.php?t=806211 with no luck...
If anybody can give me a yell on the ROM they found which lasts the longest... It would be pretty awesome!
TIA!
P.S. Also, if somebody can just give me a quick run down on the difference between ROMs/Kernels/Modems? I'm just curious, and would like to know more!

Im using ParagonRC6.0 And Im getting great battery life and i use my phone alot. I get a day and half off a full charge with a lot of use. If i use it moderate then i can get 2 full days. Just let your battery recalibrate for a couple of days to improve battery life

Ive been on Cog4 (didnt change anything) and under normal use (maybe 1-2 phone calls a day, no more than 5 mins long, 15-30 txts, and iMobster stuff) i get around 24-36 hours. Overnite while sleeping (7-8 hours) i lose about 5-10%.
While on Serendipity 5.7 (with suckerpunch kernel and jk4 modem) i get 20-30hours. And overnite i lose 10-15%.

Precision 3.5 gave me the best battery life I have ever had. I was able to go over 25 hours on a single charge with heavy use nearly all day.
Edit: I haven't used Torch yet for a full day, but I will be testing the single charge on this ROM as well and posting my results once my Captivate get's to a about %5 battery.

The ROMs that have best battery life are precision 3.5 or Merx rom (which is based off Precision)...the slim ROMs usually run very low memory which is a lot less stressful on your battery...Right now I'm running Supernova 2.3 and I can go 12-15 hours before my battery is completely dead and I'm a moderate to heavy user (facebook, XDA, youtube, etc.)

Thanks a lot guys, I'll try Paragon first... And also Precision! So many ROMs to try :3
Does Kernels/Modems do anything for battery life? I have no idea how these work though... If someone can explain it, that'd be rad!

venomio said:
Thanks a lot guys, I'll try Paragon first... And also Precision! So many ROMs to try :3
Does Kernels/Modems do anything for battery life? I have no idea how these work though... If someone can explain it, that'd be rad!
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If anything, I believe that the kernel and modem are the most important aspect of battery life. I wouldn't know too much about it, so maybe someone else can elaborate.

[Q] CM 7.1 Stable vs Stock JVx Battery life

After using Samsung stock ROMs for over a year I finally switched to CM7.1(Stable) last week. But the battery life I'm getting now is not as good what I used to get with Samsung stock ROMs. With JVT I easily got 24hrs, but now I cant go beyond 15hrs with same usage patterns (3G during day and WiFi at night, few short calls and around 50 SMSs, with a bit of web browsing and some online audio streaming). Did anyone else notice a similar battery life drop going from a recent stock ROM to CM7.1 ?

I ran the CM7 nightlies until recently and came back to JVT because of battery life and the hello hello bug. I use my phone as a music player for most of the day and find that stock ROMs hardly deplete the battery at all, with CM7 I was getting the same sort of life as you.
Sent from my GT-I9000 using xda premium

For me, CM 7.1 Stable drains battery a lot. I've changed to JVP modem and it seems to be a bit longer, maybe I'll try with Fugu kernel.

Looks like I'll be going back to JVT. Idling battery drain is way too much. For example I charged it around 8 last night and by 12 noon today, battery is down to 45% mostly just idling and few texts. This is as bad as original eclair release came with the phone.

I personaly dont find there to be a huge difference but i am on Bell which is HSPA only (3G all the time)
i find i always have to recharge by 4 pm (8 am wake up) but i am a heavy user. I am waiting for my extended battery so i can make it through a day.

redzone321 said:
I personaly dont find there to be a huge difference but i am on Bell which is HSPA only (3G all the time)
i find i always have to recharge by 4 pm (8 am wake up) but i am a heavy user. I am waiting for my extended battery so i can make it through a day.
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What was the last stock ROM you used ? I used to get similar battery life with earlier ROMs, sometimes I had to charge it twice in a day depending on usage. But with recent ROMs (2.3.3 and up), I ever hardly charged it twice, despite very heavy use (more than an hour of calling , GSM/VOIP, about an hour of internet audio streaming etc..). IMO stock ROMs are really good at idle power consumption, I have managed to get 2 days with light use, a full day with moderate use and more than 10hrs with heavy use.
EDIT : CM7 is smoother and quicker; I also like the customizability. I’ll again give it a try when ICS comes out , but till then I'm back to Samsung Stock, because poor battery life simply kills the experience for me. Perhaps I can squeeze couple of hours more with some tweaks, but I doubt it'll be as good as JVT.

I myself have come back to 2.3.5 xxjvt cos coming from cm7.1 and darky 10.2 final..i should say stock rom can have a standby time of more than 24hours believe that..otherwise ics might have a lot more to over than gingerbread
Sent from my GT-I9000 using XDA App

I hope when ics is released by cyogenmod battery life gets better this is why ive not updated to 7.1

Hello U all.
Can somebody give me a link to the CM7.1 stable for i9000?
Thank you.

frustration with my crappy

I have it rooted with gingerbread 2.3.5 and i am not pleased.
my phone was slow. like making me mad slow. Its like my phone only wants to be fast a couple. I had launcher pro , go sms and go key board. But then i uninstalled all except launcher pro and removed all my widgets. and its a little faster but its still really sluggish. also my battery seems like it goes down pretty fast.
Should i download a new rom ? Im thinking of getting a new phone also. i was thinking about an iphone but not sure .

Wich 2.3.5 and kernel?

I have Jvs

Well I can't offer any help on a I9000 rom. Haven't been on one of them for a while. I would recommend you trying a native rom. But Have you tried reflashing that same rom you are on?

is it stock or the custom rom? I am running S_Bamboo rom based on JVT and talon kernel...its really really smooth, fast and decent battery....

Im on apex , and i have tried reflashing . Im going to try a different kernel

My captivate was running extremely slowly (almost unusable) when I was running Mosaic VII. It was so bad that I almost dished out ~$600 for a new phone (contract wasn't up yet). As a last effort, I decided to try out CyanogenMod 7. To my amazement, my captivate is suddenly extraordinarily fast and ridiculously usable! The data connection is actually fast (used to take about 7 minutes to update Pulse (news reader), and now it completes in under 4 seconds), GPS is still meh but better than previously, and the phone interface is very snappy.
If you haven't tried it yet, I would highly recommend CyanogenMod to see if that solves your issues. It saved me a buttload of money since now I don't need a new phone until my contract is up!

Raikia said:
My captivate was running extremely slowly (almost unusable) when I was running Mosaic VII. It was so bad that I almost dished out ~$600 for a new phone (contract wasn't up yet). As a last effort, I decided to try out CyanogenMod 7. To my amazement, my captivate is suddenly extraordinarily fast and ridiculously usable! The data connection is actually fast (used to take about 7 minutes to update Pulse (news reader), and now it completes in under 4 seconds), GPS is still meh but better than previously, and the phone interface is very snappy.
If you haven't tried it yet, I would highly recommend CyanogenMod to see if that solves your issues. It saved me a buttload of money since now I don't need a new phone until my contract is up!
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how is your battery life though? I personally have had the best luck with pinnacle.
CM and miui had awful battery, and i would often have to turn off and on the data (at least once a day).
this also was when i was using nightlies (maybe a month before the stable release came out) is there any difference in the rom now? Should i give it a shot again?

lourivellini said:
how is your battery life though? I personally have had the best luck with pinnacle.
CM and miui had awful battery, and i would often have to turn off and on the data (at least once a day).
this also was when i was using nightlies (maybe a month before the stable release came out) is there any difference in the rom now? Should i give it a shot again?
Click to expand...
Click to collapse
Battery life has gotten way better since then. Also it's faster and the new features are great
*Get Chance and Luck*

+1000000
10 Char

CM7 has been great for speed and battery life for me. Absolutely astonishing. I don't even care about the SGSII anymore.
PS If you try it, I suggest doing a complete restore, i.e. not using Titanium Backup as it seemed to slow things down for me.

Captain_Nero said:
Battery life has gotten way better since then. Also it's faster and the new features are great
*Get Chance and Luck*
Click to expand...
Click to collapse
Going to give it a shot when I get home.
I'm optimistic, but I really can't see how it can even come close to a kh3 ROM.
If I just leave my phone in standby, after 10 hours, it might only go down to 85-90 percent. Last time I tried cm, it would go down 5% an hour.
The last nightly I remember flashing was around build 100 or so. Have they fixed the proprietary driver issue that causes the bad battery life?
Should I go with glitch kernal? Or stick with stock? And what glitch should I go with if I do use glitch?
Fingers crossed that it works better this time!

lourivellini said:
Going to give it a shot when I get home.
I'm optimistic, but I really can't see how it can even come close to a kh3 ROM.
If I just leave my phone in standby, after 10 hours, it might only go down to 85-90 percent. Last time I tried cm, it would go down 5% an hour.
The last nightly I remember flashing was around build 100 or so. Have they fixed the proprietary driver issue that causes the bad battery life?
Should I go with glitch kernal? Or stick with stock? And what glitch should I go with if I do use glitch?
Fingers crossed that it works better this time!
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Click to collapse
ya I am putting on cm7 right now, i had it earlier in the year and had the same problems you did and so i switched but im going back and I like the look of it right now

lourivellini said:
how is your battery life though? I personally have had the best luck with pinnacle.
CM and miui had awful battery, and i would often have to turn off and on the data (at least once a day).
this also was when i was using nightlies (maybe a month before the stable release came out) is there any difference in the rom now? Should i give it a shot again?
Click to expand...
Click to collapse
My battery life is actually extremely better than it was with Mosaic (and previous ROMs). After a day (from 8 AM to 11 PM) of pretty heavy use (reading emails, Pulse news, non-stop texting, and web surfing), my battery is probably between 10-20% left. Obviously thats not a lot (definitely requires a charge every night), but compared to my 8 AM - 5 PM (completely dead) battery life previously, it is a substantial increase. I have found that it drops from 100% to 60% pretty damn quickly, but then hovers in the 50-60% range for a long time (playing a 3D game for 30 minutes made it drop from 90% to 75%, but on a different day, the same 3D game for 30 minutes went from 66% to 65%).
I would definitely give it a shot again. I wouldn't do a backup and restore of your apps though....I'd reinstall each one again manually (you can restore the data to some apps if you want). Also, clear all caches and battery stats. Don't freak out if your battery dies to ~60% after an hour...it will stay around that percent for almost the entire day.
PS: On standby, this thing is a beast. From 8 PM to 11 AM (on standby completely while i was sleeping), it only lost 1% battery life. I don't use anything like Juice Defender or anything. Data was still enabled.

I've been using Serenity rc4.1, and about to flash rc5. Been fast, stable, and good battery life for me. Light use yielded me 1 day and about 17 hours on a charge. Haven't had any problems with wifi, gps, or really anything else. Good luck.

Well I'm on it right now and I like it better compared to apex. I can tell try hat my battery life is better. Does anyone know the best modem/ kernel that I can get for my phone
Sent from my SGH-I897 using XDA App

ore0o said:
Well I'm on it right now and I like it better compared to apex. I can tell try hat my battery life is better. Does anyone know the best modem/ kernel that I can get for my phone
Sent from my SGH-I897 using XDA App
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I use the stock kernel without any issues, but I've never tried any others. Modems are very geography dependent so it will take some trial and error. I am currently using UGKG3 with great success if you're looking for a starting point, and I've also had great luck with JJJV5, but YMMV.

Well, I'm writing from SGS2 right now, but I do have SGS too (my working phone no.), and I was not satisfied with with any stock (or/and) deoxed ROM I've tried (JVH,JVK,JVP,JVB, JVO,JVQ.....), because even fresh flashed or (and) tuned ROM felt sluggish to me. I've tried even few CM7nightlies, but I've been pushed away by some of it's aspects (it was fast, rock stable, but something around nightly #80, it wasn't mature yet for daily use). After a while on JVQ, I've finally decided to give that crappy chineese piece of **** a go...
Well, now I'm satisfied. MIUI ROM is based on CM7, so it's stable and fast, it can be configured to the bone, and with some gentle touch from MIUI team to the graphic design, it is best compromise between graphically advanced, but slow and unstable Samsung ROM and it's derivates, and superior rock stable and reliable CM7 which lacks any unified user friendly interface for all apps, and some details may not even work at all.
Give it a try
Sent from my GT-I9100 using xda premium

I've been running cyanogen 7 for a bit now and although the battery life isn't stellar it's definitely tolerable.
I would suggest using a design gears Tom or serendipity though. They are the closest to a stock cappuccino experience you're going to find.
Sent from my SGH-I897 using XDA App

So my phone was all the way down to 15% and I had practice, so it was idle for 2 hours and when i looked at it it said it had 25% left. and then it was idle for another 20 min and it said it was 27%.
im just sayin