Develop Bugs

[VOTE] OpenDesire Vs DeFroST (Best Battery Life Thread)

Place your vote's of which ROM has the best battery life for your phone.

Good thread! I'm very intrested to see wich ROM has the better battery life!

Isn't this a bit pointless as they are basically very similar roms.

buchman said:
Isn't this a bit pointless as they are basically very similar roms.
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As far as I know - DeFroST is based on OD. So nothing to compare or vote here.

techtex said:
As far as I know - DeFroST is based on OD. So nothing to compare or vote here.
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Not entirely the same. And both on different kernels also.
Sent from my HTC Desire using XDA App

I had very bad surprises with both roms.
But I think the real problem are some apps.
Camera360 for example kills your battery in 2 hours.
So I don't vote

techtex said:
As far as I know - DeFroST is based on OD. So nothing to compare or vote here.
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Defrost is completely build from source with cyanogenmod packages and framework. Kernel is different also (no overvolt [email protected]). Look at my github: http://github.com/richardtrip/

richardtrip said:
Defrost is completely build from source with cyanogenmod packages and framework. Kernel is different also (no overvolt [email protected]). Look at my github: http://github.com/richardtrip/
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Thank you Richard. So there will be different battery life between the 2 ROM's. People need to stop saying that DeFroST is a total rip from OpenDesire.
Sent from my HTC Desire using XDA App

I agree.
There WAS a time when OD and DF is almost similar inside out but as of lately both ROMs are very much different.
But on the question of which had better battery life my vote goes to DF. OD seems to be unstable lately and has turned out to be more experimental then stable (e.g implementation of multitouch droid keyboard, switching to HTC keyboard and now infusing elements from Galaxy S). I had more better power drain on DF and CM6.

Cor, this all seems familiar.
Anyway, instead of polls which to be frank are worthless in this regard, has anyone actually done any measured testing between battery lives of different versions of different ROMs? That might actually be useful and interesting.

Nordo said:
I had very bad surprises with both roms.
But I think the real problem are some apps.
Camera360 for example kills your battery in 2 hours.
So I don't vote
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how can an app which only runs when you open it explicitly drain the battery in 2 hours (unless you sit there with the camera on for 2 hours)

I've very bad experience with OpenDesire battery... I can't say the same about DeFrost, wich has a good battery life

gio.desire said:
I've very bad experience with OpenDesire battery... I can't say the same about DeFrost, wich has a good battery life
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I was once with OpenDesire a few days ago and don't consider going back because one night i had 59% battery charge and woke up the next morning finding that it's dead.
Going back to DefroST and running my same old apps that i previously had on OD works just fine. With my phone with plenty of charge the next morning

i think this thread would be more useful if people would give their specific experiences with the roms they use the most, as i'm sure there are quite a number of people that haven't tried one or the other long enough to give substantial feedback. i think people should include:
which version of the rom(s) they tested/used
what kind of battery life they experienced and with what type of usage (i know it's subjective and everyone gets different results, but it's better than just voting for the rom you used and saying it's the best)
length of time that was allowed to test (there have been occasions where rebooting or going through a complete charging cycle have yielded better battery life. so it should be noted if people only allowed the rom they tested to be on their phone for maybe 20% or whatever, or a couple of hours)
and any other information people think might help/be useful to others
also what radio people are running would be very useful as well

This is a development forum.
I think that this type of thread are useless, since battery life is too "personal" to sort with a silly poll.
Battery life is meant to be professionally tested with some program, with the same device. One can have faulty battery, another one can have a non calibrated battery, another one a new battery.
My two cents.
Sent from my HTC Desire using XDA App

I tried DeFrost just for a while to see Quadrant score. So I can't say something certain about it's battery life. But OpenDesire I'm using rigt now has great battery life. I mentioned that today in OD thread also. With normal use(Web, lots of messaging, GPS etc. 768 mhz cpu speed (it does 1300 Quadrant score with that speed) and 2G mobile network) I've used it for 70 hours. Really impressive I think.

thefunkygibbon said:
how can an app which only runs when you open it explicitly drain the battery in 2 hours (unless you sit there with the camera on for 2 hours)
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If you don't leave the app with the back button, it runs further in the background-

Please Mods, close this thread.
f.

forelli said:
Please Mods, close this thread.
f.
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For what reason?

soooo many different aspects to battery life that just asking randomly to 'vote' is indeed not helping too much.
I won't say it as blunt as 'please close this thread' but really helpful it's not.
For example, what if - eehhhhm, let's pick Defrost - DeFrost comes out as 75% voting to have better battery life. A new user comes in, sees DeFrost as better, and picks that one. His battery drains within an hour, and he is thinking "WTF?!? insert random roob rage stuff here WTF!?!?!"
This happens all the time. Battery usage users are _so_ different based on usage, network provider, location and apps used / installed that the ROM really doesn't have much influence.
Only if there is a real 'bug' it's noticeable, and the dev's are quickly on it then.

[Q] AARRGGH!....Battery on my Evo stinks!

Configuring this thing for good battery life is exhausting. Before root I had done most things listed in this thread : http://www.xda-developers.com/android/tweaks-for-superb-battery-life-in-evo/ and finally achieved pretty good battery life.
After root, I have never been able to achieve this even though the bloatware isnt running, have various tweaks on there for performance, and so on.
Have tried Fresh Rom with stock and Kings #11 and liked it but had terrible battery life. Tried Myn's 2.2 with stock, Kings #11, and Netarchy and battery was not much better. Now running AVA9 (no flashed kernel) and battery is no better. Have tried running setCPU on all these setups and does not help.
Any suggestions? Seems someone will say this rom/kernel combo works for them and another person will say it sucks, don't use it.
I couldn't stick with Myn's because there were too many bugs/errors. If my best bet is to go back to all HTC stock rom w/root then so be it.
.....and yes, I have read through the numerous amount of threads on this topic but no clear combination has been highlighted that I have seen. I use my phone for business primarily so it needs to last me as long as possible. The thought of increasing my phone size with an extended battery is not appealing to me.

I have stock rooted 3.29. I initially did the plug-unplug trick when I got the phone. Then, I turned off always on data, and set email, google accounts, and Sense weather widget to update once an hour. Phone behaves the same as when data is always on, so I don't even notice 3G off when the screen is off.
I get 8 - 10 hours under very heavy use (constant fiddling, email, games, internet, calls, etc),
10 - 15 hours moderate (surfing, ebooks, email, internet),
and easily 18+ with light use (email, occasional light surfing, occasional call)

I have everything the same as before root so with the bloatware and some other things not running would think it would last longer than stock......not!
@greyopaque...what was the reasoning for using stock rom instead of custom? Battery life or just never tried any of the others? Would like to know if your battery life is better with just the stock over others.

Ditto....I am a heavy user and leave everything running that I need. I use the phone for what it was made for. After trying/not trying all different types of roms/battery tweaks/advanced task killers/battery monitors etc., I decided to buy another original red 1500 battery as I don't like the extended battery look either. So, until they come with better battery technology....I guess that would be the career to go into and make some money ;0).....we are stuck with the best phone ever...yet....with a battery life that sucks for those of us that put the phone to the test....have a great day!

Yep...only problem is having to shut the phone off, change battery, then power back on. All the while, missing whatever phone calls come in.
***My point of the thread really isn't the terrible stock battery but the fact that the pre-rooted setup lasted so much longer than the rooted w/custom rom. Why??
I would think the battery life would get better without all the bloatware and other worthless services running all the time.

Once again.. you need to check your apps. Most likely there's something causing a drain.. Try updating to the newest rooted stock roms (3.30). The new kernel is definitely an improvement.
As an aside.. what bugs did you have with myn's 2.2 rls2? I ran it, and it was fine. Now on rls3 beta and amazing rom with great battery (3.30 base).

To be honest, I've never tried anything else. I really like the stock Sense experience... and since this is a work phone, I need it to work without glitches.
CCallahan said:
@greyopaque...what was the reasoning for using stock rom instead of custom? Battery life or just never tried any of the others? Would like to know if your battery life is better with just the stock over others.
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Well....hopefully I can hear from some peeps that have used a good amount of custom roms/kernels, as well as the stock one and see what they think.
Cmon guys....let me know!
@eyeballer1......Myn's was just acting weird and I kept getting a "com.htc.bgp" force close that I couldn't fix. Also, I have tried the newest stock rom but it is just so darn plain jane didn't keep it on long enough to test it. As for apps, I have basically the same apps on my phone that I had before root (except for specific root apps such as rom manager, titanium, etc).

1Brite1 said:
Ditto....I am a heavy user and leave everything running that I need. I use the phone for what it was made for. After trying/not trying all different types of roms/battery tweaks/advanced task killers/battery monitors etc., I decided to buy another original red 1500 battery as I don't like the extended battery look either. So, until they come with better battery technology....I guess that would be the career to go into and make some money ;0).....we are stuck with the best phone ever...yet....with a battery life that sucks for those of us that put the phone to the test....have a great day!
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Sadly they won't.. That is battery technology.. This world is pretty much stuck where its at and will probably stay there.. Its the one thing that is not progressing that much.. Even from the 50's
That said.. the thicker battery is the way to go.. Only you will know its thicker, and trust me.. ITS NOT THAT BAD! Believe it or not you get used to it.. If its for business, well then a thicker battery should not bother you at all, use it during the day and maybe at night switch back to the smaller one.. You know, for the dates and ****
The thicker battery will be a life savior.. All these battery tricks and tips help, but nothing is going to be mind blowing.. The fact is, this phone is extremely advanced and requires a lot of power.. I just except the fact that I need to be close to a power charger at most times..

I might go ahead and try Myn's new beta with 3.30 and see what happens. Looks as though I need to look deep into what is actually using my battery. I have always used K-9 for email and have heard it sucks up battery, but it only uses about 2% on mine and is the best email app I have ever found.
@fastfed......I'll have to ask my wife if I can go on a date sometime.

what helped me the most was wiping battery stats correctly (as per cyanogen wiki, but applies to all roms).
Charge to full, turn off, wipe battery stats. Turn back on, wait till everythings loaded, unplug. Use as normal until battery dies (do not charge at all until battery dies). Recharge fully in one go (meaning do not unplug while charging until full). Use and charge as normal.
This should be done whenever flashing new rom.
Sent from my blah blah blah blah

I also use k9 for mail. As I use Hotmail not Gmail.. is it really that bad? Anything else out there ?
Sent from my PC36100 using XDA App

The biggest positive jump I have seen in regards to battery life was going from Cm6 to 3.29 ruu stock, then I ur3 to root.
I'm still sceptical that the 3.30 zip update gave any improvement to battery life as I have seen others report. In fact, I almost wonder if I somehow have less battery life now, but it could be in my head. It's almost impossible to approach this issue scientifically since I use this evo all day.
Sent from my PC36100 using XDA App

Try bakedsnack 1.8, its the best battery life I've seen on a rom w/o having to make all these stupid tweeks and disabling features on ur phone.
Sent from my PC36100 using XDA App

I'm gettin great battery life using vaelpak 2.3 with the stock htc kernel. I imagine most of the custom kernels around are based off of older kernels and while they may have higher "performance" ratings though I have hardly been able to tell a difference between kings 11 or baked speed and battery, I think the newer stock kernel is your best choice no set cpu to worry about, its just simple. I'm personally gettin about 14 hours with almost constant music playing to bluetooth headset, a bunch of browsing, and occasional use of google navigation which is a big battery eater. With just phone and text use after 21 hours I was at 52% yesterday.

ok so i have literally flashed every major rom / kernel and a comination of each. I have found that with minor tweaking most sense based roms get close to the same battery life. some people will argue that this or that rom is best but I would challenge others to truely preform a test on them and i bet they would be suprised.
k-9 is only a battery hog if you have it constantly polling for new emails if you have it set up to scan constantly then it will take a reasonable about of battery life but nothing more then most other email apps with the same settings.
have you tried as was lsited above and recalibrating your battery? I am assuming you are a pretty heavy user from the sound of things. How long where you getting pre root and how long are you now getting rooted? do you have titanium back up set up on a schedule? If so that can cause major battery drain as it sometimes keeps your phone awake.
All in all with the information you provided no one can actually tell you what is wrong. there are to many variabes and everything we say is a shot in the dark hoping to hit common problems.
my best recomendation configure your battery stats as listed above, if you havent tried use the HTC trick (chrage battery for 8 hours turn off phone charge for 1 hour turn on phone unplug it or 2 minutes then turn it off and charge for another hour.)
Anytime you wipe data you wipe your batary stats and it can drasitally impact your phones "battery life".

At this point I'm not so sure my battery or charging device on the phone isn't defective. But, only time will tell.
Currently I am running the newest, non-beta Myn TwoPointTwo and Netarchy 4.2 non-havs. I also ran this procedure (which fachadick already suggested):
1. Phone on...charge until green light comes on. Immediately unplug and turn phone off.
2. Plug phone back in until green light comes on again. Immediately boot into Recovery and wipe battery stats.
3. Use the phone on battery until dies.
4. recharge phone to 100%
I'm still on step 3. Will report back after a few days.
I had never heard of doing this when switching roms so hopefully it will help since I have swapped out a good amount lately.
Does anyone know where to get the newest HTC flashable kernel based on the new 3.30 release? All I have found is the rom package.

GREAT battery rom

My friend has a G2 but no xda account so he asked me to come here and ask you guys what's the best G2 ROM with great battery. Were going on a 14 hour trip and were going need it too last. Any advice? On ROM and kernels
Sent from my HTC Glacier using XDA App

It depends on what you will be doing with it. Any ROM can be made to last 14 hours if you have a battery in good condition and only use it occasionally to check e-mail, visit a few web sites, etc. My Desire Z easily holds up to a full day that way. OTOH, if you're playing games all day long or watching 14 hours of movies, then no ROM will help. You will need an extended battery at that point, or some other way of recharging the battery.
In my experience, although people make claims about how good one ROMs battery life is over another, I have yet to see any convincing evidence. People's usage patterns and phone environment are far too different to be able to say that one particular ROM makes a consistent, noticeable difference. If anyone has actually published scientific results studying this, please point me to them.
As almost all ROMs are derived from a common code base and run on the same hardware, I would focus more on a ROMs usability, speed, feature mix and stability.

+1 to the post above. It is all predicated on how you use your phone and for what, also if you use setCPU or use the tweaKr script (like me), it depends on your profiles and governors. I personally have great battery life using the latest meXdroidMod release for the G2, but I'm very careful to always calibrate my battery between flashing roms. MeXdroidMod is the only one to my knowledge that uses waydownsouth's tweaKr script that allows you to undervolt your processor and set profiles for your CPU that react much faster than setCPU does. My advice is find a rom that you like and make sure to wipe battery stats then use the battery calibration app. Good luck and happy flashing!
Sent from my G2 w/ meXdroidMod PreGhostChilli

My friend likes unity 3.0... do you think that could last? with just using the phone for texting and stuff like that?

JOMOID said:
My friend likes unity 3.0... do you think that could last? with just using the phone for texting and stuff like that?
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Any sense based rom like Unity will be processor intensive, so I don't think it would last nearly as long as an ASOP build. Also the unity dev team has pulled all their download links from xda and their website, so unless you find someone willing to share I don't think you'll have much luck.
Sent from my G2 w/ meXdroidMod PreGhostChilli

I have unity 3.0. I get about 10-12 hours of battery life. Here are some ideas that i use:
-download juice defender
-set max sleep cpu speeds at 368mhz
-processor is set to 1.2 ghz by default. Set it to 800mhz
Is the trip is by car, you can get a car charger.if by plane, many planes offer usb charging
Sent from my HTC Vision using XDA App

taob said:
It depends on what you will be doing with it. Any ROM can be made to last 14 hours if you have a battery in good condition and only use it occasionally to check e-mail, visit a few web sites, etc. My Desire Z easily holds up to a full day that way. OTOH, if you're playing games all day long or watching 14 hours of movies, then no ROM will help. You will need an extended battery at that point, or some other way of recharging the battery.
In my experience, although people make claims about how good one ROMs battery life is over another, I have yet to see any convincing evidence. People's usage patterns and phone environment are far too different to be able to say that one particular ROM makes a consistent, noticeable difference. If anyone has actually published scientific results studying this, please point me to them.
As almost all ROMs are derived from a common code base and run on the same hardware, I would focus more on a ROMs usability, speed, feature mix and stability.
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Exactly. I guess this is where YMMV definitely comes in handy. All the ROMs I've used I can easily get more than half a day out of them with my daily use. I shut off data when at work and turn it on on my breaks to browse the web, check emails etc.

There is the G-Lite rom from the Virtuous guys. I haven't tried it out but the other roms I've used from them are great. It's not Sense tho, it's ASOP.
http://forum.xda-developers.com/showthread.php?t=1076786

+1 for G-Lite rom. With version 1.0.2. i could consistently get 2-2.5 days on a single charge.

Asking what the best ROM battery life is is like asking what the best bass for metal is hiding: ). It really depends on your phone, and how heavy of a user you are. But if you want an actual answer, I get the best battery life with Xboarder's Stock Gingerbread ROM.

ROM with the best battery life?

Does anyone have any recommendations on what the ROM is the best for battery life? The rom I heard that had the best was g-lite from virtuous, but it hasn't been working out for me. I mostly text and only get max 9 hours out of it.

Afternoon,
If you look in the forum that topic has been discuss several time as to what ROM is better for battery life. You'll see several responses. It comes down to personal preference.

Snipe175 said:
Does anyone have any recommendations on what the ROM is the best for battery life? The rom I heard that had the best was g-lite from virtuous, but it hasn't been working out for me. I mostly text and only get max 9 hours out of it.
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This topic has been talked about many many times before... but i would say that virtuous g-lite has one of the best battery life out of all the roms, although it comes down to user experience

Snipe175 said:
Does anyone have any recommendations on what the ROM is the best for battery life? The rom I heard that had the best was g-lite from virtuous, but it hasn't been working out for me. I mostly text and only get max 9 hours out of it.
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has been asked 100000+ times. Its not necessarily the specific ROM, but how you use it and what features you choose to leave out in order to extend life.
No matter what ROM you use, there are probably UV and under-clocked kernels, which can help battery life. Also, doing things like turning off 3G/4G data when you're not using it, turning down brightness, and turning off GPS/BT/WiFi when not in use, reducing gmail/twitter/facebook/g+ sync, etc. etc. etc. will all help.

im having the best with bulletproof....went 2.5 days with light usage

i've tried CM7, MIUI, Virtuous Unity and Virtuous G-Lite and out of those G-Lite is the definite winner and is the one I've stuck with...

Belvadier said:
i've tried CM7, MIUI, Virtuous Unity and Virtuous G-Lite and out of those G-Lite is the definite winner and is the one I've stuck with...
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i might have to give it another chance

definitely not MIUI ! as for me CM7.1 was the best with 2 day while MIUI is only 1 day with a lot of SMS and few data

I can usually get about a day and a half out of glite with wifi on and screen at 60% brightness. Definitely over 2 days if you turn on juice defender...
Sent from my T-Mobile G2 using XDA Premium App

martonikaj said:
has been asked 100000+ times. Its not necessarily the specific ROM, but how you use it and what features you choose to leave out in order to extend life.
No matter what ROM you use, there are probably UV and under-clocked kernels, which can help battery life. Also, doing things like turning off 3G/4G data when you're not using it, turning down brightness, and turning off GPS/BT/WiFi when not in use, reducing gmail/twitter/facebook/g+ sync, etc. etc. etc. will all help.
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Agree. There's so many variables, and ROM might not even be the most important factor. For instance, what radio are you using, is it RIL matched to the ROM, and is it the best radio for your local area?
People complain about Sense ROMs draining battery. But I'm on Unity (with the radio recommended in the Unity thread, also in my sig), and get over 2 days with fairly light usage.

It may not be all about the rom but i can say that I am using the stock radio that came with my G2 for all of the roms I have tried and there is a definite difference in the battery life between them. MIUI was definitely the worst for me, then unity and cm7 and the best has been glite. I haven't changed anything beyond the rom. Usage across all of them was fairly consistent.
Really unity and cm7 were pretty good. But MIUI was very noticeably worse. And glite has been noticeably better.
Whether I am right or wrong, that has been my experience.
Sent from my T-Mobile G2 using XDA Premium App

A bit off topic, but consider using Juice defender as an alternative. It turns off your internet while you're phone's screen is locked. For my personal uses, it would work great, but I just manually leave my internet off until I need it. I hate having less than 50% battery life at any time. ( I carry about 3 spare batteries just in case I feel the use to play PSX)

Yeah juice defender does do a pretty fantastic job of saving battery while being the least amount of intrusive as possible. That being said, even though it does turn on mobile data pretty fast upon waking up the screen, it still is a few seconds before the connection is reestablished. also, even if you have it set to turn on data for 1 minute every 15 minutes (or whatever you set it to) it is still preventing instant updates to emails and such.
For that reason I only use juice defender when i know I am going to be away from my charger for a long while since it is only the slightest bit inconvenient. It does really cut down on battery use though.
I don't think i have used JD since i switched to glite however since as long as my battery lasts a full day (it does) then i am always able to plug my phone in before I go to sleep.
Sent from my T-Mobile G2 using XDA Premium App

[Q] Best GB ROM that has greatest battery life

I dont use my phone a lot and my TWAS is usually 0%. I dont use my phone alot, but usually when 5-6 hrs of no use or very light use it has gone down around 20-30%. Anyone have any ideas of what rom would work best for me? I am on ICS 5.0 right now and it seems they are not coming back with their 5.5 they had out. I really only care about great battery life and having some type of hotspot hack or free tethering.
Thanks.

You have to try each one and see what works best for you. Read the ROM threads. Every phone and user is different.
Sent from my SPH-D700 using XDA App

I have been using the latest sleeper rom and i have left it at 1000mhz no overclocking and i seem to be getting better battery life than i was with some of the others. i flash frequently and i would agree with kennyglass in that each one works differently. so try for youself.

Well, like everyone else said, its depends on what your phones handles. Everyone phones handles a rom differently, well, not that differently, but enough to make big differences.
Like the guy above me, I also use SleeperRom. Its a very stable, battery efficient rom.
here is a list of roms I would try out...
ACS_ICS_V5.5
LegendaryRom
MarcusantROM
StarskyROM1.5

I also recommend CleanGB by toadlife. Fast, clean, stable, full day on original stock battery.
Sent by my CleanGB Epic using XDA App

I've gotten 21 hours out of legendary 2.1 and samurai 3.0.4 ill post a screenshot. It was with low signal areas and moderate use and 2 hours + with music running.
Sent from my OG Epic

Clean GB
My wifes phone while at work would drain in 8 hours to the point that it was saying charge me every day. Now with Clean GB on hers it lasts about 2 days with light usage. Again YMMV.

Im on clean GB and getting great battery life. After 11 hrs of moderate use I still have 30 % battery left. After 8 hours of heavy use I'm at 30%. Very stable ROM.. No force closes or wierd issues.
Sent from my Customized Samsung Epic 4G via XDA app

I personally would towards 'which kernel should I use?' You've got to remember that although we all have epics, not every CPU is the same. What I am running it he or she is running may not be what you should be running. If you ever check out an oc/uv thread, you will see that people get different results using different settings, even though we're all on epics. You've got to try a couple different setups (roms AND kernels) to see which runs best for your device. Good luck!
via my EPICally transmogrified EI22: adrenaline injected & Supercharged

I currently use CleanGB which has been pretty great. If you're in an area with iffy service, that'll kill your phones battery pretty quick.
After installing a new rom make sure you charge it to 100%, wipe battery stats and then let it die without charging to get the most out of your battery (and having an accurate battery indicator)

In my opinion the way you configure your phone has by far the biggest effect on battery life, followed closely by the signal strength of the area you are in, with maybe a very small effect caused by the rom/kernel combination. Watch what you have syncing. Facebook and Twitter syncs can kill your battery, as can any other app that's always using data. Also, wifi uses WAY less battery than 3G or 4G. Use it when you can.
I'm on stock EI22 with mkasick's kernel and I usually get a full 16 hours with power to spare.

poit said:
In my opinion the way you configure your phone has by far the biggest effect on battery life, followed closely by the signal strength of the area you are in, with maybe a very small effect caused by the rom/kernel combination. Watch what you have syncing. Facebook and Twitter syncs can kill your battery, as can any other app that's always using data. Also, wifi uses WAY less battery than 3G or 4G. Use it when you can.
I'm on stock EI22 with mkasick's kernel and I usually get a full 16 hours with power to spare.
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Basically Poit. Since no 2 people use their phone the same way it is retarded to ask for a comparison of best battery life. People need to stop being lazy and just try the ROMs out and compare for themselves based on their own use.
Sent from my SPH-D700 using XDA App

kennyglass123 said:
Basically Poit. Since no 2 people use their phone the same way it is retarded to ask for a comparison of best battery life. People need to stop being lazy and just try the ROMs out and compare for themselves based on their own use.
Sent from my SPH-D700 using XDA App
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I agree. I have seen 3 questions over the last 2 days with these dumb questions.
but if I was to give my advice, I would strongly advise trying MarcusantROM, Battery life is pretty amazing, just be sure to flash a different kernel, as 2.0.6 is not even offered for download anymore because of bugs n such.
I would strongly advise the Shadow Kernel, paired up with MarcusantRom. You should see some pretty amazing battery life with that combo.
or try these out...
LegendaryROM
SleeperROM

Come on... "Dumb question"? "Lazy"? Get off your high horse. Certain ROMs give better battery performance than others because of certain tweaks and the OP asked for some general advice. Certain ROMs are certainly worse than others. OP wasn't asking for what would be best for him but what has worked good for others. Why is it so wrong for someone to ask for general advice about a ROM/Kernel combo. Not that hard of a question and not so ambiguous that it deserves a "dumb question" or "stop being lazy" response. If you don't want to help the OP, then simply DON'T RESPOND.
As for the question... I generally use the kernel that is included with the ROMs because normally that is what the developer has tested the most. I think Thunderhawk, Sleeper, and Legendary (in that order) are all good for battery but I haven't used all of the others.

sparkyr said:
Come on... "Dumb question"? "Lazy"? Get off your high horse. Certain ROMs give better battery performance than others because of certain tweaks and the OP asked for some general advice. Certain ROMs are certainly worse than others. OP wasn't asking for what would be best for him but what has worked good for others. Why is it so wrong for someone to ask for general advice about a ROM/Kernel combo. Not that hard of a question and not so ambiguous that it deserves a "dumb question" or "stop being lazy" response. If you don't want to help the OP, then simply DON'T RESPOND.
As for the question... I generally use the kernel that is included with the ROMs because normally that is what the developer has tested the most. I think Thunderhawk, Sleeper, and Legendary (in that order) are all good for battery but I haven't used all of the others.
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In kind if you don't like the responses don't respond to them. I read for a month all the ROM threads before deciding on one to flash. Go to ANY ROM thread and someone there will claim they got the best battrery life there. It is different for every body and EVERY phone. ALL of the ROMs here have tweaks that work differently for everyone depending on use. Also people are sick of every other thread as "what's the best ROM". You HAVE to try them for yourself. If we are being to real for you then don't read what is written.

I was once where you are now. When I couldn't find a satisfactory answer, I made my own solution. I'll be uploading the latest version of it, version 3.3 today or tomorrow.
Battery Used: Extended Battery 2700 mah
Testing Performed: Idle Only
For those unsure, idle testing is simply when you treat your smartphone more like a phone. This included uses such as, checking the weather, responding to the occasional text, checking the time, etc. The primary goal of idle testing is to understand how long the phone can stay alive when used for texting and phone calls only. This is useful primarily for occasions such as, going on vacation, where you would like your phone to last a week or more in case of emergencies, but you'll be preoccupied and not killing your battery with Angry Birds. It's nice to know that our phone is capable older, simpler cellphones in standby time.
This indicates that my phone could stay on for as long as 10 to 14 days.
Direct arithmetic calculations indicate as much as 5.5 to 8 days on the stock 1500 mah battery.
Obviously, usage varies greatly between people and even between days, so anything other than idle testing is subjective. Testing was not performed on a stock installation, but rather, on my own daily personal fully-decked setup.
On the stock battery, I've played games for a total of more than 3 hours over a 48 hour time period before needing to recharge.
This has held true on my phone, my wife's, her mother's, and more than a thousand other user's phones. Yours may vary. Try them all. I do.

Looking forward to Random's latest!

sparkyr said:
Looking forward to Random's latest!
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Look no longer! Posted!