Database Users

Battery problems? Google lies?

So I found this great app that tells me how much life I have left on my battery. I find that with my phone I can hardly go pass 16 hours with MODERATE use yet everyone here is bragging about easily passing 30hrs with HEAVY use. So I'm asking you guys, to please, download this app called BatteryTime Lite and post your pics or info here. Lets compare the results. Remember to set the level to 100% as shown in my pic below..
Also I herd the P/N might be related, mine is 99HKE002-00 F ..Guessing F means Failure.

Are you using Cyanogen's ROM???

faraz1992 said:
Are you using Cyanogen's ROM???
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Click to collapse
No, stock. Why you ask?

i read somewhere that Stock and Cyanogen's ROM have display consuming a lot of battery... its fixed on enomther's and modaco's desire port...
On Cyanogen and Stock, Display consumes ~60% battery while on Enomther's and MoDaCo's desire port, display consumes 15~20% battery...

faraz1992 said:
i read somewhere that Stock and Cyanogen's ROM have display consuming a lot of battery... its fixed on enomther's and modaco's desire port...
On Cyanogen and Stock, Display consumes ~60% battery while on Enomther's and MoDaCo's desire port, display consumes 15~20% battery...
Click to expand...
Click to collapse
Thats what I herd too..thats why I'm also calling google a lier about saying this thing lasts 20hours with audio playback.
I'm curious, do they see a big improvement in battery when the display using 15-20% battery or its just numbers that were out a place to begin with?

I have identical figures. That combined with picking the N1 from a list says to me that these are just database figures rather than real world ones for your handset.

Root your phone and then install cyanogenmod and one of the under volted kernels. I usually get 24 - 30 hours battery life.

I just ran a test. I left the mp3 player on all night turn all the way on repeat. SO far after 8hrs of playing I was at 52%. If I'm correct, I just might be able to hit 18hrs...MMMM
myplague said:
Root your phone and then install cyanogenmod and one of the under volted kernels. I usually get 24 - 30 hours battery life.
Click to expand...
Click to collapse
Completely far from the part that I said google lied. Though I'm planning to root if the next update does not improve or fix these issues.

myplague said:
Root your phone and then install cyanogenmod and one of the under volted kernels. I usually get 24 - 30 hours battery life.
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Click to collapse
what kernel is this? i am running cyanmod 5.0.5.3 and kernel 2.6.33.1-cyanogenmod [email protected]#1

I know the last letter of my p/n is B and its amazing

zachthemaster said:
I know the last letter of my p/n is B and its amazing
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link if u dont mind, sorry for jackin the thread.... back to our reg scheduled program

jack away..
zachthemaster said:
I know the last letter of my p/n is B and its amazing
Click to expand...
Click to collapse
No problems at all? no 3g issues?, battery only lasting a day or half? or touch screen issues?

Ok after 100% charge..the app is telling me that my phone will last 10hr:48min with moderate use....anyone thinking that the F on my P/N might mean battery sucker..

i have the exact same numbers as you. if you choose other instead of the phone type it asks you to enter your battery's info so it sounds like it only goes by the type of battery anyway. Not actual usage specific to your phone

My phone ends in an F as well. My battery life SUCKS right now. I have tried everything. The weird thing is it was good until I rooted my phone and applied Cyanogen rom. I've tried .2 and .3 for the Cyan rom's, all with bad battery life. I've tried wiping batterystats, fulling draining battery then recharging, task killer to wipe anything in the background, I even have a 2nd battery. No luck. I've also tried the undervolted kernal, but I didn't really notice a difference with it. (Only tried it for about a day so)
Bottom line though, something is going on. Something (I suspect with Cyan's roms) is killing battery life for some of us. I just wish I could figure out what it is.

faraz1992 said:
i read somewhere that Stock and Cyanogen's ROM have display consuming a lot of battery... its fixed on enomther's and modaco's desire port...
On Cyanogen and Stock, Display consumes ~60% battery while on Enomther's and MoDaCo's desire port, display consumes 15~20% battery...
Click to expand...
Click to collapse
Not saying your're wrong but can anybody else back this up or debunk it?

Beautiful phone with bad battery life and bad signal.That was just my experience.

ram130 said:
So I found this great app that tells me how much life I have left on my battery. I find that with my phone I can hardly go pass 16 hours with MODERATE use yet everyone here is bragging about easily passing 30hrs with HEAVY use. So I'm asking you guys, to please, download this app called BatteryTime Lite and post your pics or info here. Lets compare the results. Remember to set the level to 100% as shown in my pic below..
Also I herd the P/N might be related, mine is 99HKE002-00 F ..Guessing F means Failure.
Click to expand...
Click to collapse
Any chance you're using Weatherbug or Weatherbug elite (based on your SS)? After installing weatherbug and using the widget I got absolutely ABYSMAL battery life. I've purchased several other weather widgets and none had the effect that Weatherbug did for some reason. I removed it and battery life is back to normal again (moderate use and plenty of battery at the end of the day).

ram130 said:
jack away..
No problems at all? no 3g issues?, battery only lasting a day or half? or touch screen issues?
Click to expand...
Click to collapse
no problems AT ALL
no dead pixels
no purple tint, crystal clear and saturated colors
battery lasts 1.5+ days
3G (at&t) is almost ALWAYS there and quick as balls
palm reach thing is gone.. i mean, i had the t-mob version before this one and its exponentially a better experience all around.
data is QUICK too... i mean quick

How long your battery lasts definitely depends on the apps youre using, I use my phone a lot, probably more than the average user, although i dont make many calls. My phone will easily last from when I leave my house around 530am till 11pm or so when I go to bed. I do use a task manager to kill stuff I dont need running every once in a while, I think it really just depends on how you use it. I use it for a lot of texting, surfing and news, and Pandora at work. I use wifi when im at home although ive never noticed it eating my battery. Yesterday I was playing Pandora over bluetooth on 3G for a little over 3 hours and it only took 5% of my battery. Im on Cyanogen 5.0.5.3, if that matters. With all that said I rarely go all day without charging it, I usually plug it in a bit at work and plug it in when I get home, but if I dont for whatever reason it easily lasts my whole day.

Which ROM gives the best battery... period?

Does anyone know? My guess is MCR or Enom... but I can't be positive. Anyone?

Im waiting for the next release of cm, if it wont improve my battery life i am going to systematically try out all the other mods to see which one gives me the most juice.

Ive had my best battery from Kings Nexus rom. Its undervolted and has easily been the best battery one.

dafoo21 said:
Ive had my best battery from Kings Nexus rom. Its undervolted and has easily been the best battery one.
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Click to collapse
Thanks... I'll be using the AVS kernel, so I'm more concerned with ROM (not kernel) performance...
EDIT: Also - I can't use Desire because of Bluetooth.

hah2110 said:
Does anyone know? My guess is MCR or Enom... but I can't be positive. Anyone?
Click to expand...
Click to collapse
For me its Alpha r20 - MoDaCo Custom ROM Desire Port this rom is great or me r21 was not as good for battery life i dont know why wish i did

From worst to best:
-CM
-Enom
-Desire

Hmm... I WISH I could go to Desire but I NEED Bluetooth. What about regular MCR?

Rom : cyanogen 5.0.6 test1
1 days and 8 hours and I still have 30% of batery

kosworld said:
Rom : cyanogen 5.0.6 test1
1 days and 8 hours and I still have 30% of batery
Click to expand...
Click to collapse
Can you put this in context though? What was your battery life like previously? What ROMs have you used? What kernel are you using? Where can you even get 5.0.6?

Yeah battery life has to be tested to a standard method one good way to test would be to play a movie with the volume at Max with high brightness or transferring one big file over wifi for a period of time and see how fast it drains. This will act as a stress test and will bring comparisons a lot faster and more efficiently.

kosworld said:
Rom : cyanogen 5.0.6 test1
1 days and 8 hours and I still have 30% of batery
Click to expand...
Click to collapse
Doing what exactly? phone usage?

Which ROM gives the best battery... period?
Click to expand...
Click to collapse
The one that doesn't allow you to turn on the phone. Battery lasts for weeks!
In all seriousness, using stock rom gives me a very good battery life now, lasting more than a day with almost everything on, 2 push emails, full brightness and all 3G.

CM 5.0.6 T2. so far ive got a full day of usage out of this rom with 3G all day. setcpu profiles enable. Gtalk, Twitter, Emailing. 5 or more phone calls 15 min each. Two app downloads from market.
But if i was just going to play and show off i had use Enom rom and its far by the best. for battery life. CM 5.0.5 i didnt get great battery life. i could leave my phone over night 100% and wake up to it on 80%-70% or so. with nothing in the background

An undervolted CM 5 may give you a better battery life...
Waiting for 5.0.6...

Cyanogen 5.0.6 is far and away the best ROM I've used, power wise.
Up to 5.0.5.4 I was seriously considering getting rid of my N1, as the battery would lose 80% in less than 10 hours, just sitting on standby combined with less than an hour's worth of web browsing.
5.0.6 is much better, and I'm still showing 50% after 16 hours.
Still not a patch on my old Nokia 5800, which went 3 days at a time on a single charge, but at least I have the confidence to actually use my N1 now...

I'm sorry I call BS on anyone who claims they use their phone AND get more than a day battery life. Until someone is willing to give me a Nandroid backup to restore to my phone to see what it is that is running and prove that their programs and background processes make for a 20+ hr battery, I don't buy it.

I'm off the charger since 8am and am down to 91%... it is ridiculous. I'm on an AVS kernel and Enom with not much running in the background.

hah2110 said:
I'm sorry I call BS on anyone who claims they use their phone AND get more than a day battery life. Until someone is willing to give me a Nandroid backup to restore to my phone to see what it is that is running and prove that their programs and background processes make for a 20+ hr battery, I don't buy it.
Click to expand...
Click to collapse
Is that aimed at me?
I have a Facebook widget, along with the standard news and weather widget running, and email (NOT the Google mail app) set to refresh every 15 minutes.
I use the browser (on 3G/HSDPA) for up to an hour, here and there, and about the same on wi-fi at home.
GPS is always on, Wi-Fi and bluetooth only on when required.
The Last.fm app also gets used for up to an hour, although not every day.
Couple this with the odd phone call and text message.
The above would see my battery down to less than 20% after about 10 hours, and was really annoying.
The past few days, when I went to bed the battery was hovering around the 50% mark - although I've not used Last.fm this week.
Of course, this may not meet YOUR definition of phone usage, but it certainly isn't BS...

Raymond77 said:
Is that aimed at me?
I have a Facebook widget, along with the standard news and weather widget running, and email (NOT the Google mail app) set to refresh every 15 minutes.
I use the browser (on 3G/HSDPA) for up to an hour, here and there, and about the same on wi-fi at home.
GPS is always on, Wi-Fi and bluetooth only on when required.
The Last.fm app also gets used for up to an hour, although not every day.
Couple this with the odd phone call and text message.
The above would see my battery down to less than 20% after about 10 hours, and was really annoying.
The past few days, when I went to bed the battery was hovering around the 50% mark - although I've not used Last.fm this week.
Of course, this may not meet YOUR definition of phone usage, but it certainly isn't BS...
Click to expand...
Click to collapse
Not trying to be rude but I just don't see how we have such inconsistencies....

hah2110 said:
Does anyone know? My guess is MCR or Enom... but I can't be positive. Anyone?
Click to expand...
Click to collapse
I agree, IMP MCR then Enom.

WTF is up with the EVO battery!

first off, i love this phone. no joke, but the battery is well...laughable to say the least. on my HD2 running android, i get double the battery life and they HD2's battery is a 1200 battery, the EVO'S is a 1500. and android boots off the SD CARD and has NO POWER MANAGEMENT on HD2'S. my evo dropped to 54 percent battery today in 3.5 hours. no wifi, no bluetooth, no GPS and no 4G...all im saying is... WHAT THE ****!

It gets better. Load up some custom kernals + setcpu and you'll get great life. I'm running CM6 + snap 8.2 and it lasts the whole day with moderate use.
Sent from my PC36100 using Tapatalk

There is plenty of info on battery issues with EVO.
First... I would recommend rooting.
Second, use the FRESH build based off the new OTA leak.
Finally, change Settings / Mobile Networks / [uncheck] Enable Always-on
Then... ALWAYS keep your WiFi radio on. Add your home network if you have one... and wherever you go, add whatever hotspots you are in proximity of.
And if you ever consider doing a new build, backup your WiFi access point data via Titanium Backup before you do.
That should just about cover it... You will get a full day of use PLUS some out of that battery.

Award Tour said:
It gets better. Load up some custom kernals + setcpu and you'll get great life. I'm running CM6 + snap 8.2 and it lasts the whole day with moderate use.
Sent from my PC36100 using Tapatalk
Click to expand...
Click to collapse
i am im running KINGS #9 kernal, regularly clocked at 499200 min and 65820 max, and when the screen is off i have it set at 245 min and max... im gonna buy a nother battery. one of those 3500 batterys...they go for like 10 bucks on ebay

edufur said:
There is plenty of info on battery issues with EVO.
First... I would recommend rooting.
Second, use the FRESH build based off the new OTA leak.
Finally, change Settings / Mobile Networks / [uncheck] Enable Always-on
Then... ALWAYS keep your WiFi radio on. Add your home network if you have one... and wherever you go, add whatever hotspots you are in proximity of.
And if you ever consider doing a new build, backup your WiFi access point data via Titanium Backup before you do.
That should just about cover it... You will get a full day of use PLUS some out of that battery.
Click to expand...
Click to collapse
i rooted my phone within 2 hours of purchasing it...i will look into what you mentioned later. im gonna condition my battery for the 4th time in 5 days..

PS those 3500mah batteries on ebay for 10$ and the same 2000mah batteries.
If you get one, get a seido. I just bought 2x1500mah batteries from tuttoit, great backup batteries... charger too 9.96$ shipped.
Oh and I am getting great battery life with snap and cyanogen's rom.

yeah i am going to look into all the batteries, and i love sense, that is why im not on CM6. all my other phones are running it (G1, MT3G HD2). now that i have a phone that runs sense naturally, i dont wanna change it. i love sense! and this thread was just a way for me to vent about my crappy battery.... lol

oshizzle1991 said:
i rooted my phone within 2 hours of purchasing it...i will look into what you mentioned later. im gonna condition my battery for the 4th time in 5 days..
Click to expand...
Click to collapse
When you rooted it, did you also flash the newest radios? Trust me on the fresh build.. it rocks... but also, most importantly, use WiFi whenever possible... and turn off "always update"... those are all the most important.

edufur said:
When you rooted it, did you also flash the newest radios? Trust me on the fresh build.. it rocks... but also, most importantly, use WiFi whenever possible... and turn off "always update"... those are all the most important.
Click to expand...
Click to collapse
yeah im running the latest radio, and i dont have wifi where i live/ work =/

is it really that hard to search for info ? there is a post about battery live everyday some times more

im not saying i need info, im just venting right now. you buy the BEST phone available, youd figure the battery would be the best too right?

After about 10 hours I was at 50% with moderate use.... not too shabby. I have always-enabled turned off, setCPU at 1190/245 then <85% 921/245 <70% 806/245 <55% 729/245 <40% 615/245 <25% 499/245 and JuiceDefender

DirtyShroomz said:
After about 10 hours I was at 50% with moderate use.... not too shabby. I have always-enabled turned off, setCPU at 1190/245 then <85% 921/245 <70% 806/245 <55% 729/245 <40% 615/245 <25% 499/245
Click to expand...
Click to collapse
lucky bastard... lol

oshizzle1991 said:
lucky bastard... lol
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Click to collapse
lol these phones are great but until we see some great advancement in battery technology, the battery life wont be

DirtyShroomz said:
lol these phones are great but until we see some great advancement in battery technology, the battery life wont be
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Click to collapse
that is exactly what im trying to say man... lol.

oshizzle1991 said:
im not saying i need info, im just venting right now. you buy the BEST phone available, youd figure the battery would be the best too right?
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Click to collapse
No when I got my evo I was clearly.told and shown a doc from sprint (the manager over mobile area is a buddy) to tell everyone to expect 6 hours of battery life with normal use. I was able to squeeze out 8 - 9 myself. I know people say conditioning the battery is a waste of time . IMHO do it I noticed a nice increase in battery life. I have to laugh at people who get pissy about battery life when they are holding a mini PC.
Myself i avg. 18-20 hours a charge with normal use. I have 2 backup batteries so I don't worry to much about juice
from the fade

I really dont feel the Evo is a bad phone h, hell I love the damn thing . I just feel HTC kinda screwed up things in the process . One telling customers to expect 6 hours of use is alittle of a joke . Who the hell only works six hours a day ? Or is that six hours also include you getting up getting ready for work then coming home before you go to bed ? Second , its pretty clear the Evo has a bug in its charging system . People have reported that using stand alone wall chargers to charge the batteries they are getting improved life out of the batteries (Sorry I have never removed a battery from any cellphone I have had in the past to charge it and not gonna start now) . Third yes the HTC Evo is litterally a pocket pc with capabilities most phones dream of having . Then why the hell did they give it a 1500mah battery ? Thats like strapping a 55 gallon drum of fuel to the space shuttle and saying "Yeah this outta make it" . Sorry for my rant had to get it out (plugs phone in to charge again) LOL

OP, I like you, you're funny
A couple things..
1) Why do you have your CPU governed below 700mHz while awake??? You won't save battery that way, your phone runs at a gHz, use it!!
2) Setting your min/max both at 245 on sleep will actually decrease your battery life and your phones wake up performance, maybe not much. Capping your phone at 245 when asleep makes it a harder transition to awake because it makes that sudden jump when you wake it up. Setting your max somewhere over 600 on asleep, and setting it to OnDemand will ease the transition from sleep to awake.
There is no shortage of battery life tips but here's one: The auto rotate function polls for g-sensor status like once every 15 milliseconds. I use a switch on my homescreen to turn it on when I want it and keep it locked in portrait when I don't need it. This will help conserve some juice
I'm only scratching the surface here, I'm sure you do realize what a wealth of info there is on the subject already. FWIW, I use the crap out of this phone and I consistently get 20+ hours out of a charge. Good battery performance is achievable!

nebenezer said:
OP, I like you, you're funny
A couple things..
1) Why do you have your CPU governed below 700mHz while awake??? You won't save battery that way, your phone runs at a gHz, use it!!
2) Setting your min/max both at 245 on sleep will actually decrease your battery life and your phones wake up performance, maybe not much. Capping your phone at 245 when asleep makes it a harder transition to awake because it makes that sudden jump when you wake it up. Setting your max somewhere over 600 on asleep, and setting it to OnDemand will ease the transition from sleep to awake.
There is no shortage of battery life tips but here's one: The auto rotate function polls for g-sensor status like once every 15 milliseconds. I use a switch on my homescreen to turn it on when I want it and keep it locked in portrait when I don't need it. This will help conserve some juice
I'm only scratching the surface here, I'm sure you do realize what a wealth of info there is on the subject already. FWIW, I use the crap out of this phone and I consistently get 20+ hours out of a charge. Good battery performance is achievable!
Click to expand...
Click to collapse
20+ Damn, what rom and kernel are you using? Im kinda having the same problems too. Im limiting my phone tryin to get better batt, that ****ing sucks. I just want to use my damn phone, without much sacrifice. Thanks

Why the hell do you have 4 phones running the same OS?

Appropriate steps to a better battery life?

Hi everyone! Long time XDA reader and I've had my Evo rooted for months. Now I have been dealing with its "poor" battery life for a long time and not really thinking much of it till I finally decided that rooting has to have some advantage for this. I average about 6-7 hours then my phone dies...
After doing a little research I read some people getting 15-20+ hours out of their phone with heavy use...I was amazed...I decided to try to get better battery life on my phone and this is what I am trying right now. I just want to make sure I am on the right path with it and that I am not doing anything seriously wrong.
-I am trying Cynogens ROMs - CM7 I tried for a day and that gave me about 7 hours of battery life...still no real improvments. I am trying Cynogens 7 Nightly 12 now to see if that works.
-I am trying different Kernels. Been getting them on the HTC EVO kernels page. Right now I am using stock HTC one.
-Should I try different radios too? Where can I go to find different radios if so.
-What order should I be installing radios/kernels/roms?
-I have donated and am using Set CPU now also and have the screen off cpu power really low.
-Am I on the right path trying out different ROMS/ Kernels/ Radios to optimize my battery life? Is there anything else I can be trying?

turn off gps when not need
data when not needed

Check out my sig for my full walk-through on battery life (I don't want to repost it here lol).
But you seem to be doing everything okay. My only hesitation would be to say make sure you're giving Kernels adequate time to settle into your phone. Unless something is HORRIBLY wrong with them, you shouldn't switch/judge them until at least two days in
Radios should not make a difference in your battery life.
Also, be aware that CM is NOT optimized for battery life. There are a couple of ROMs that will give you unheard of battery life if you would like though (Myn's comes to mind). It's a trade off though. CM is hands down the fastest ROM you'll run...but in my experiences is in the lower tier of battery.
Hope that helps

also when the newest version of ultimate Juice is released that will help you i have the closed beta and im glad to have it back and running

@Cheesy: I turn off all those things If I turn off "data" that turns off Exchange push right? I really need that on all the time >_<
@Green: Really? Myns is good on battery life? I tried that before and was dieing with battery. (Was getting my average 6-7 hours) I had that one for about 2 weeks. Do you think it was my Kernels that were bad then? Isn't Myns warm 2 pt sense based? The one I used was...I had thought sense UI drained battery more than CM for example that is just plain stock android gingerbread?
@Cheesy again: Ultimate Juice? Is that an app on the mkt place? How much did it help you? I'm willing to donate and pay for apps to support the devs if they really make a noticeable difference.
Another thing..when you install a ROM does it automatically install a Kernel too? Or are those 2 separate?

syypher said:
@Cheesy: I turn off all those things If I turn off "data" that turns off Exchange push right? I really need that on all the time >_<
@Green: Really? Myns is good on battery life? I tried that before and was dieing with battery. (Was getting my average 6-7 hours) I had that one for about 2 weeks. Do you think it was my Kernels that were bad then? Isn't Myns warm 2 pt sense based? The one I used was...I had thought sense UI drained battery more than CM for example that is just plain stock android gingerbread?
@Cheesy again: Ultimate Juice? Is that an app on the mkt place? How much did it help you? I'm willing to donate and pay for apps to support the devs if they really make a noticeable difference.
Click to expand...
Click to collapse
with UJ i get 18-19 or more on a full charge with phone being used 80% of the day .
with out i was changing out batteries after 9 hours or so ( i normally work 12 - 13 hours a day )
yes its in the market but gingerbread support is not public yet ( closed beta )
also check in spareparts for any wakelocks you might be having
for a sense rom myns are great so are Ava's,caulkins and Miks

Hmm Thanks Cheesy. I'll take a look at that.
So if I flash a ROM that is not Gingerbread...I can use that app. But Gingerbread is anything 2.0+ right?
I'll try out those ROMs too and different kernels...test them for 2-3 days.
Whats wake lock? I'll download that spare parts thing and see if I can figure it out.

I just recently started seeing great battery life with my rooted Evo. I flashed MikFroYo 4.5 with a stock htc kernal.
I use juice defender and that's it. I've been getting just over a day per charge for the past two weeks.
I wouldn't say that's with heavy use as a good 6-7 hours of that time are accounted for when I'm asleep. I do about 30-50 texts a day. About 10 minutes of calls and I check facebook and twitter all the time. My data use varies depending on the day but I do use youtube and pandora pretty regularly as well.

just make sure background data is disabled. accounts and sync>background data. I have no issues with battery life on stock sprint evo.
of course it is a 3500mah battery

My wife and I just bought two EVOs a week and a half ago, and I quickly became interested in improving the battery life on the phone. My first attempts were rooting my phone and installing OverClock Widget, and using minimal settings when the screen was off. With that change alone, and comparing to my wife's phone from a full overnight charge, my phone was able to make it 14-16 hours with moderate use. My wife's phone would die after 8-9 hours of moderate use. Granted, there's obviously going to be a difference between my moderate use and hers, but even testing with screens off and letting them idle for an hour, there was a definitive difference in battery consumption between our phones.
I went one step further and installed CM7 Nightly 12 just yesterday... already I'm noticing even further improvement in battery life, but the majority of those savings are when my phone is idle. Overnight, my battery only drained 7%, whereas my wife's drained much more than that. My battery has been at 39% for the past 3 hours at idle, so I imagine that with my version of "standard usage", I would be able to possibly get higher than 16 hours of usage per charge (can't wait until I do the full calculation testing tomorrow!).
Here are some observations I've had in all of this:
1) Check out Greenfieldan's list of battery tips and tricks. Some of these are very simple and actually had a significant impact on both my phone and my wife's phone (especially shutting off data and disabling auto-synch). I'm new to the forums, but this is one of the first things I checked out. This is a great place to start.
2) Battery consumption is obviously affected by how frequently you use your phone, and what you are doing with it. I say this because it's easy to read threads about what techniques work and see mixed results, but I don't see alot of people really admitting how much or how little they use their phones. I'd say I'm a more conservative user of my phone, but I still have my texting, browsing, and even occasional streaming, GPS using and general fiddling. So in other words, your mileage may vary with any given technique.
3) This is my personal opinion, but think about when you ideally want to be charging your phone, and try and anticipate usage around it. It sounds strange, but I've come to my own conclusion that an optimal charge for me (not necessarily possible, but optimal) will give either 12 or 36 hours of usage time. This is because I like to charge my phone overnight, so if I get 18 hours of battery life, I'm unfortunately wasting 4-6 of them. If I get 24 hours of usage, then that means that by the next morning, I need to charge again. So I plan ahead and charge at night, and use through the day. This was particularly useful when I first started with the phone and was getting a max of 8-9 hours. I'd know when to unplug, and how well it would get me through the day.
Anyway, at this point I'm rambling, but since it is still very fresh in my mind I wanted to share my thoughts. Hopefully this helps.
(Btw, apologies for the huge post!!)

syypher said:
So if I flash a ROM that is not Gingerbread...I can use that app. But Gingerbread is anything 2.0+ right?
Click to expand...
Click to collapse
Gingerbread is Android v2.3. Froyo is v2.2.

syypher said:
@Cheesy: I turn off all those things If I turn off "data" that turns off Exchange push right? I really need that on all the time >_<
@Green: Really? Myns is good on battery life? I tried that before and was dieing with battery. (Was getting my average 6-7 hours) I had that one for about 2 weeks. Do you think it was my Kernels that were bad then? Isn't Myns warm 2 pt sense based? The one I used was...I had thought sense UI drained battery more than CM for example that is just plain stock android gingerbread?
@Cheesy again: Ultimate Juice? Is that an app on the mkt place? How much did it help you? I'm willing to donate and pay for apps to support the devs if they really make a noticeable difference.
Another thing..when you install a ROM does it automatically install a Kernel too? Or are those 2 separate?
Click to expand...
Click to collapse
Sorry it took me so long to reply.
Anyhow, from my testing on mine and three other phones Myn's Warm TwoPointTwo has the best battery life (although some of them were right on par with it). Specifically his RLS 3 and RLS 4. Did you try Warm Z? Because the battery life on that ROM is no where NEAR his 2.2 ROM.
Also, Sense CAN be a major drain on battery. If you make it so it's not syncing all the time/doing the random shenanigans it defaults to I'd argue it's better than AOSP (based on my experience with both).
Yes, your Kernel might have been an issue. Do you know which one you were using? HAVS? CFS? BFS? Etc.
Just for my phone comparison, CM7 (which I am running now) requires me to charge my phone at least once a day. Myn's Warm TwoPointTwo was every other day/every day and a half.

syypher said:
@Cheesy: I turn off all those things If I turn off "data" that turns off Exchange push right? I really need that on all the time.
Click to expand...
Click to collapse
You can set juice defender to turn on data to sync at set intervals; anywhere from 15min to every couple of hours. If you can stand to wait 15 minutes for that email then I would recommend it. I personally like not being interrupted every time I get an email.
Also, make sure your kernel and setCPU aren't trying to both control the same thing. I really like using a kernel with HAVS so I avoid apps that also try to modulate my CPU.
I've tried warm 2.2 and really like it. Although I think I'm getting slightly better battery with Azrael X 4.0 with netarchy 4.3.1-cfs-havs-nosbc and ultimate juice controlling only my data and WiFi connections.
Also,the 3500mah battery is worth every penny if you don't mind the extra thickness.

i owe setcpu and screen off seting for my battery life

I read Greenfieldan's step on the forum here about a week ago, and jsut the HTC Method of battery calibration alone changed my battery life completely.
I also dumped Advanced Task Killer.
In another thread, I rad that CM is the worst drain on a battery and I personally think the guy that wrote that is sadly mistaken. Even with all the steps taken in Greenfieldan's guide, Sense based ROMs are battery killers. They are the worst, by far, and I average battery drain at about 15-20% pr hour, even with screen off.
The #2 killer, is having your screen on. Waiting for that next text to come in with the screen on is not worth it, so turn it off when you're not using it.
With the setup in my sig, and moderate to heavy use, in 12 hours, I only drop about 25% with a Sedio 3500maH battery.
With Sense, like I said, quick battery death.

I'm using CM7 - Nightly 12 right now + Stock Kernel...I also have set cpu to change cpu usage when screen is off.
This combo was my first combo I started trying (2 days ago when I posted this) to test for increased battery life. I followed what some of you guys suggested and let it "work into my phone." Instead of giving up after 1 day of test.
Results! Just yesterday I had my phone on for 14 hours and it was at 18%! That is a HUGE improvement. Right now it is at 65% and I've had it on for about 5 hours. That's really long compared to what it was before! Before I tried changing the ROM, kernel and using Set CPU I would be at the red right now or around 15%.
Thanks you guys for all the suggestions! Any further advice would be greatly appreciated! (Only sad thing is that my GPS doesn't work with CM7 - Nightly 12 >_<...) Other than that I love it!

[GUIDE] How I got almost 3 days of battery life on my Nexus S 4G

First and foremost this guide is based around the Sprint Nexus S 4G. If you do not have the Nexus S 4G, Than this guide will probably not help you. =)
Secondly all credit goes to the wonderful people that work endlessly to make these wonderful Roms and Kernels. Without you guys Android wouldn't be what it is today!
Third: Please make a back up and use this guide at your own risk. I don't want to bare the weight of someone turning their phone into a paperweight by using this guide.
Alright, Now lets get to the fun part.
Case you've already forgotten why you're ready this topic. This is my rough how-to guide on getting easily over 2 days out of a single charge on your phone, Very much possible to push 3 or more days depending on use and other varying factors.
What you're going to need to start:
- Rooted Nexus S 4G with a custom recovery like Clockwork mod.
- Flash the following Rom http://forum.xda-developers.com/showthread.php?t=1417499
- Flash the following Kernel http://forum.xda-developers.com/showthread.php?t=1436313
-Flash the following "KL2" Radio update http://forum.xda-developers.com/showthread.php?t=1077168
After you have flashed all the above and confirmed your phone is running stable with all the default settings. Charge your phone to 100% and reboot back into recovery, and WIPE YOUR BATTERY STATS
Now. Lets begin configuring your rom and kernel!
- Install CPU MASTER FREE from the android market https://market.android.com/details?id=com.antutu.CpuMasterFree&hl=en
Set the following on CPU Master
- CPU Speed 800 MAX and 100MIN
- CPU Governor CONSERVATIVE
- and Scheduler set to CFQ
- Make sure to click apply on boot as well
- Now Install NSTOOLS from the Android market https://market.android.com/details?id=mobi.cyann.nstools&feature=search_result
Set the following on NSTOOLS
- DEEP IDLE: ENABLED
- Backlight Dimmer: ENABLED
- Make sure Backlight Notifications are left disabled. It keeps phone from idling properly.
- Leave all other settings alone and make sure to check set on boot
- Now lastly install Antutu Battery Saver from the Android Market
https://market.android.com/details?id=com.antutu.powersaver&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5hbnR1dHUucG93ZXJzYXZlciJd
Activate Battery Saver and set to level 2 battery save. Easy as that.
Basically your done! =)
If you notice your phone has a slightly worse or little to no improvement on the battery this is due to you deleting your battery stats. As you use your phone it will write new stats and you will begin to notice a difference after a few cycles. Just make sure your battery is charged when you wipe them, Let the phone run almost completely dead. Plug it up, Let it charge back to 100%, Unplug it. Rinse and repeat. Just be sure to unplug it when you notice it's fully charged even if you don't plan on going anywhere. Just let it sit and run on battery so that it calibrates the battery stats while it's idle as well.
Now as you should already know your battery life is going to heavily depend on use and SIGNAL STRENGTH. It seems a lot of people don't realize the more signal you have the longer your battery will last. If you're in an area with very low signal it can kill your phone in a matter of hours.
I have attached a screen shot of my battery life using this above method. Other settings I will mention
- WIFI ENABLED and CONNECTED
- Bluetooth and NFC DISABLED
- Automatic backlight control enabled
- Facebook notifcations, Weather and Contacts are the only things set to SYNC on my phone.
- Usage: Light to moderate. This includes a few texts throughout the day. A few phone calls, and a brief checking of facebook every now and then.
If I'm missing anything I will update this post. That is all for now. Happy modding and may this tutorial work the same wonders for you as it did me.
Also I should state that the phone finally died at around 2Days 17hrs on battery. My goal for 3 straight days was cut short after a few 30 minute phone calls and other work I had to do on the phone.
If you have any questions. Feel free to post, or PM me. I'll be here =)

cwayn1989 said:
First and foremost this guide is based around the Sprint Nexus S 4G. If you do not have the Nexus S 4G, Than this guide will probably not help you. =)
Secondly all credit goes to the wonderful people that work endlessly to make these wonderful Roms and Kernels. Without you guys Android wouldn't be what it is today!
Third: Please make a back up and use this guide at your own risk. I don't want to bare the weight of someone turning their phone into a paperweight by using this guide.
Alright, Now lets get to the fun part.
Case you've already forgotten why you're ready this topic. This is my rough how-to guide on getting easily over 2 days out of a single charge on your phone, Very much possible to push 3 or more days depending on use and other varying factors.
What you're going to need to start:
- Rooted Nexus S 4G with a custom recovery like Clockwork mod.
- Flash the following Rom http://forum.xda-developers.com/showthread.php?t=1417499
- Flash the following Kernel http://forum.xda-developers.com/showthread.php?t=1436313
-Flash the following "KL2" Radio update http://forum.xda-developers.com/showthread.php?t=1077168
After you have flashed all the above and confirmed your phone is running stable with all the default settings. Charge your phone to 100% and reboot back into recovery, and WIPE YOUR BATTERY STATS
Now. Lets begin configuring your rom and kernel!
- Install CPU MASTER FREE from the android market https://market.android.com/details?id=com.antutu.CpuMasterFree&hl=en
Set the following on CPU Master
- CPU Speed 800 MAX and 100MIN
- CPU Governor CONSERVATIVE
- and Scheduler set to CFQ
- Make sure to click apply on boot as well
- Now Install NSTOOLS from the Android market https://market.android.com/details?id=mobi.cyann.nstools&feature=search_result
Set the following on NSTOOLS
- DEEP IDLE: ENABLED
- Backlight Dimmer: ENABLED
- Make sure Backlight Notifications are left disabled. It keeps phone from idling properly.
- Leave all other settings alone and make sure to check set on boot
- Now lastly install Antutu Battery Saver from the Android Market
https://market.android.com/details?...1bGwsMSwxLDEsImNvbS5hbnR1dHUucG93ZXJzYXZlciJd
Activate Battery Saver and set to level 2 battery save. Easy as that.
Basically your done! =)
If you notice your phone has a slightly worse or little to no improvement on the battery this is due to you deleting your battery stats. As you use your phone it will write new stats and you will begin to notice a difference after a few cycles. Just make sure your battery is charged when you wipe them, Let the phone run almost completely dead. Plug it up, Let it charge back to 100%, Unplug it. Rinse and repeat. Just be sure to unplug it when you notice it's fully charged even if you don't plan on going anywhere. Just let it sit and run on battery so that it calibrates the battery stats while it's idle as well.
Now as you should already know your battery life is going to heavily depend on use and SIGNAL STRENGTH. It seems a lot of people don't realize the more signal you have the longer your battery will last. If you're in an area with very low signal it can kill your phone in a matter of hours.
I have attached a screen shot of my battery life using this above method. Other settings I will mention
- WIFI ENABLED and CONNECTED
- Bluetooth and NFC DISABLED
- Automatic backlight control enabled
- Facebook notifcations, Weather and Contacts are the only things set to SYNC on my phone.
- Usage: Light to moderate. This includes a few texts throughout the day. A few phone calls, and a brief checking of facebook every now and then.
If I'm missing anything I will update this post. That is all for now. Happy modding and may this tutorial work the same wonders for you as it did me.
Also I should state that the phone finally died at around 2Days 17hrs on battery. My goal for 3 straight days was cut short after a few 30 minute phone calls and other work I had to do on the phone.
If you have any questions. Feel free to post, or PM me. I'll be here =)
Click to expand...
Click to collapse
I thought it was the More Bars you have the more Data Kills Your Battery... but sprints 3G sucks .. some users only experience a .5kbs to 1.0 Mbs (if your lucky) ... that being said I think that's why your battery lasts longer. But then again I'm on Wifi so my battery has lasted all day ^_^ 15% left. Nfc on , Bluetooth off , screen at 50% brightness and heavy usage. Buuuut in your screen shot below your on 3G ... the 2 days.. was it always on Wifi?
- Google

What is your screen on time?
I don't use any "power-saving" apps, just AOKP Milestone 2 with Steve Garon's 1.14 kernel to run 50hrs with nearly 4hrs of screen time.
100/1100mhz, interactive governor, standard voltage, bln/bld on, wifi used whenever available. It doesn't help that my office is in a poor signal area - battery life would be much better if the signal reception bar stayed green all the time.
Sent from my Nexus S 4G using xda premium

iGoogleNexus said:
I thought it was the More Bars you have the more Data Kills Your Battery... but sprints 3G sucks .. some users only experience a .5kbs to 1.0 Mbs (if your lucky) ... that being said I think that's why your battery lasts longer. But then again I'm on Wifi so my battery has lasted all day ^_^ 15% left. Nfc on , Bluetooth off , screen at 50% brightness and heavy usage. Buuuut in your screen shot below your on 3G ... the 2 days.. was it always on Wifi?
- Google
Click to expand...
Click to collapse
Screen time out is on 30 seconds. and Wifi was connected virutally through the entire time, exception was when I visited a friends house which is why in the screenshot it does not say it's connected, However it was still active.

Braneless said:
What is your screen on time?
I don't use any "power-saving" apps, just AOKP Milestone 2 with Steve Garon's 1.14 kernel to run 50hrs with nearly 4hrs of screen time.
100/1100mhz, interactive governor, standard voltage, bln/bld on, wifi used whenever available. It doesn't help that my office is in a poor signal area - battery life would be much better if the signal reception bar stayed green all the time.
View attachment 912363View attachment 912364View attachment 912365
Sent from my Nexus S 4G using xda premium
Click to expand...
Click to collapse
Those are very nice stats, Question, On your battery log, What are the massive drops in battery from? low signal or just heavy use on your phone?
Also I believe I'm going to go back an retry my experiment with SmartassV2 governor and On Demand. because I recently read they are better than conservative.
By all means play around with these settings and if you report back something I can approve on I will be happy to update this post and give credit to whoever finds more tricks to improving the battery life even more =)

cwayn1989 said:
Those are very nice stats, Question, On your battery log, What are the massive drops in battery from? low signal or just heavy use on your phone?
Also I believe I'm going to go back an retry my experiment with SmartassV2 governor and On Demand. because I recently read they are better than conservative.
By all means play around with these settings and if you report back something I can approve on I will be happy to update this post and give credit to whoever finds more tricks to improving the battery life even more =)
Click to expand...
Click to collapse
They're from heavy use, probably angry birds or web browsing. The poor signal usually results in much slower drain.
Sent from my Nexus S 4G using xda premium

Braneless said:
They're from heavy use, probably angry birds or web browsing. The poor signal usually results in much slower drain.
Sent from my Nexus S 4G using xda premium
Click to expand...
Click to collapse
Not saying you're wrong, but based on past experience when I lived in an area where my phone was constantly losing and gaining signal or especially switching between Verizon (Roaming) and Sprint to find a signal, My phone would get very warm and it would cause massive battery drain.

Also in regards to the Sprints 3G speed.
Here in town where I live now, with the new KL2 radio
Edit:
I have attached screenshots of 3G speeds. It seems today when I ran the test the speeds aren't that special, I guess it all depends on network load.

Braneless said:
What is your screen on time?
Click to expand...
Click to collapse
This ^
I can get about 4-5 hrs on screen-on time a day with a full charge before it dies. I couldn't imagine spreading that amount of time over three days unless I was travelling again or something lol
Sent from my Nexus S 4G using Tapatalk

kyouko said:
This ^
I can get about 4-5 hrs on screen-on time a day with a full charge before it dies. I couldn't imagine spreading that amount of time over three days unless I was travelling again or something lol
Sent from my Nexus S 4G using Tapatalk
Click to expand...
Click to collapse
Haha yeah sorry about that guys, That could have been helpful for me to post, but I actually just now realized you could view your screen on hours by clicking it. I feel about stupid now.
After I tweak some more settings and do this little experiment again I'll be sure to actually include that, Seeing as it would have been helpful LOL

Braneless said:
What is your screen on time?
I don't use any "power-saving" apps, just AOKP Milestone 2 with Steve Garon's 1.14 kernel to run 50hrs with nearly 4hrs of screen time.
100/1100mhz, interactive governor, standard voltage, bln/bld on, wifi used whenever available. It doesn't help that my office is in a poor signal area - battery life would be much better if the signal reception bar stayed green all the time.
View attachment 912363View attachment 912364View attachment 912365
Sent from my Nexus S 4G using xda premium
Click to expand...
Click to collapse
How do you get your phone to idle so well? I can never get the battery stats to flatline like that. Could it be due to me having BLN turned on as the OP said that causes an idle bug?

tycruickshank said:
How do you get your phone to idle so well? I can never get the battery stats to flatline like that. Could it be due to me having BLN turned on as the OP said that causes an idle bug?
Click to expand...
Click to collapse
There's a possibly you're running an app in the background that's preventing your phone from deep idling. Also try the battery saving app I mentioned in the post as well. It works wonders for some, and others don't notice difference. There's a lot of varying factors.
Have you wiped your battery stats and calibrated your battery with the method I mentioned above? Also you can check to see if your phone is deep idling by going into NSTools and clicking Idle stats.
If you see that your idle numbs are higher than your deep idle stats, Than yes, Something is preventing you're phone from doing so, and I would recommend disabling BLN and seeing if that fixes it.
It could be an issue with BLN and it may not be. My entire post is basically the steps and settings I've figured out and tweaked on my own to achieve maximum battery. I've read around and it seems some others have used BLN without any noticeable difference in battery at all. I guess it really just depends.
Also to the other post, The main reason I run my phone unclocked is basically, in use, I prefer the CPU to be at the lowest max speed possible, while remaining smooth, and I've noticed no lag at 800max, So therefor even when I'm using my phone it's still not going to be pulling as much power as if lets say I had it set to 1000 or 1100. Overclocking is great, Don't get me wrong, but unless you're doing something heavy like gaming or a sheet ton of crazy multitasking, I don't really think it's worth it. That's just my opinion though =)

So you're at home all this time? Then why go through all this trouble and handicapping of features and performance? Why not just plug it in?

jesusice said:
So you're at home all this time? Then why go through all this trouble and handicapping of features and performance? Why not just plug it in?
Click to expand...
Click to collapse
How exactly am I handicapping? I had people asking me how I was getting my battery life and wanted me to post up details on it, so I decided I would. I run an underclocked phone because like I stated in my previous post, I don't see the point in running a overclocked phone unless you're going for benchmarks or doing a lot of heavy multitasking and then by all means, Take the 5 seconds to change your max CPU speed. If you're referring to me not running BLN, That's because for some, including me it keeps your phone from idling and will cause battery drain. It works fine for some, others it doesn't. I'm SURE it's a problem on my end, but until I get it worked out I'm just leaving it off for now.
I've been learning about rooting and modding since the Sprint HTC Hero days. I'm far from a professional and will be the first to admit I'm an amateur compared to you guys, I cannot develop, I cannot code. I'm simply wrote this guide as a reference point for people wanting to get good battery life, That's why I said tweak with the settings and have fun.
The main reason I'm so ecstatic about the battery life, is up until now I've barely been able to get a days normal use out of an android phone even running custom roms and all that good stuff. Now I can actually use my phone throughout the day, Throw it on my dresser at night, and wake up the next morning with still enough charge to use it again without having to worry about plugging it up every night.

Home or not, this info can prove to be very useful depending on an individual's circumstance. I work multiple jobs and when I get home, sometimes I'm so tired I don't even bother to fiddle with my phone's charging cable and just crash on my bed. I've gotten great battery life using similar tactics (went to bed with a 13% charge once, woke up with the thing still alive and kicking), so again, some may find this extremely helpful. Good work!

zeigan said:
Home or not, this info can prove to be very useful depending on an individual's circumstance. I work multiple jobs and when I get home, sometimes I'm so tired I don't even bother to fiddle with my phone's charging cable and just crash on my bed. I've gotten great battery life using similar tactics (went to bed with a 13% charge once, woke up with the thing still alive and kicking), so again, some may find this extremely helpful. Good work!
Click to expand...
Click to collapse
Thank you kind sir. I'm glad you were able to find this poorly formatted guide useful! =D