Database Users

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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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?
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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
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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
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Doing what exactly? phone usage?

Which ROM gives the best battery... period?
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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.
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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...
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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?
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Click to collapse
I agree, IMP MCR then Enom.

Official Froyo battery life thread

Wanted to start this so we can get a better idea of what kind of battery life we will be seeing with 2.2! Please post your opinions so far and if you are rooted/stock and using stock kernel or the .34 kernel cyan posted. Hopefully we won't see much of a decrease do to JIT or any other new features

Probably won't be that great the first couple of days...testing out Flash and everything...(watching Hulu right now).

SiNJiN76 said:
Probably won't be that great the first couple of days...testing out Flash and everything...(watching Hulu right now).
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hulu doesnt work for me. i get unsupported device.

dvdgorila said:
hulu doesnt work for me. i get unsupported device.
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http://forum.xda-developers.com/showthread.php?t=686765

i was on CM5.0.7t2, and as we all know, CM is known for draining more battery than the stock rom/enoms but so far im seeing same usage as CM which is ok but not great. next few days will be testing for all of us. hopefully we will have similiar usages not like before where some people are getting 40 hours and some 10 lol

I dont if theres an improvement but I updated on a full battery. After I had 97% then killed the battery in like 5hours while at the Engadget Show lol

is anyone running setcpu with FroYo? im already gettin horribad battery life...probably due to Hulu

I may have done something wrong, but I'm on a rooted phone with kernel 2.6.32.9-27220-g328f560 and my phone went from 80% to 10% in about 4 hours just sitting in my pocket. The most I did was check some emails and some basic SMS.
Will monitor closer tomorrow by my battery usage shows something like 19% email. I wonder if my outlook push is doing something constantly that is hurting it.
Edit: it's also charging REALLY slowly. I have it connected to a USB port and its taken ~ 30 minutes to go from 14-16%.

So far, mine is looking pretty good. Early days yet though.

Its better with froyo.
Had to charge every evening with CM 5.0.6 and pershoots kernel, now i get almost a half day more (with more "playing around").
I use setcpu (245/499 at sleep).

My battery is showing 99% after 3 hours switched on and with light usage. If true, that is amazing! More likely something is not quite right. I am using the .34 UV kernel from persionsown he posted on twitter....

The Jones.. gotta try that Kernel..

Sindroid said:
The Jones.. gotta try that Kernel..
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If I believed that it were a true reflection of battery use and not a mis-report of some sort, I would be shouting about it a lot louder!!

i streamed about 1.5 hours of video via qik (uploading not DLing). Still have 60% battery left. I say that's an improvement. Rooted modaco froyo

I'm seeing what I think is significantly worse battery life since I installed Froyo. It's hard to say, though, because I've been playing around in ways that are different from my normal usage pattern (checking the market frequently for updated apps, for example). I was on stock 2.1update1 and now am on stock Froyo.

Battery life is definitely better than Cyano/Modaco/Enomther but it is also worse than stock ERE27. Can definitely make it through a day still though on moderate/slightly heavy use with Froyo something I can't do with Cyan/Modaco/Enom...and this is way faster and more fun than any rom i've had previously so no complaints from me.

Well I was running cyan 5.0.7 and it lasted me longer than this I have now, which is Paul's Froyo.. but since my wi-fi finally stays on I wont revert.
Question: can I still install older custom kernels on froyo???. Want to try...

My battery died sometime last night, and I had gone to bed with it 70% charged. Prior to Froyo, I was on CM 5.0.6 and usually using intersectraven's 925mv kernels, and I would lose about 1.2% per hour while idling.
I'm not blaming Froyo yet, since it could have been an app screwing around. However, the battery usage page didn't show anything out of the ordinary. It will take some more testing before I ditch Froyo until an update is released.
BTW, battery usage while actually using the phone seems to be about the same.

my battery life was phenomenal today. i can't give percentage, because i haven't put on a battery widget (or many widgets at all, tbh), but stock froyo treated me well. was above 80% (guessing by icon) when i left work after 8 hours, some hulu, some wifi, some texting, some phone calls. not exactly heavy usage, but not just idle either.

timothydonohue said:
my battery life was phenomenal today. i can't give percentage, because i haven't put on a battery widget (or many widgets at all, tbh), but stock froyo treated me well. was above 80% (guessing by icon) when i left work after 8 hours, some hulu, some wifi, some texting, some phone calls. not exactly heavy usage, but not just idle either.
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Check out Battery Indicator http://www.cyrket.com/p/android/com.darshancomputing.BatteryIndicator/
Great and extremely simple app. I've been using it for months. (And it doesn't drain battery either.)

[Discussion] Talking about battery life with Android

Hi All,
I've test all of Android builds with lastest kernels but Android on hd2 still eats battery like a T-Rex
My phone survival time not longer than 6 hours on GPRS network.
How about yours?

Come on man, I'm fairly new here but I'm comfortable enough to say... You have to have seen that there are several threads not only on this same topic, but even on how to improve your battery life with Android.

I've try all of these tips not work for me How is yours?

Make sure to turn down the brightness of your screen. There is a thread not far from this one titled "how to improve battery life on Android HD2." Read that. Also put your phone on a charger any time you're near one: desk, car, couch, etc. Disable some of the always on widgets, maybe don't sync social networks or minimize the frequency they sync... the list could go on.
The fact of the matter is these are not final builds and are running from the SD card. A super long battery life isn't to be expected. Follow some if the steps above, read the how-to thread, and give it a shot.
Don't forget to thank the devs who put this together.
Sent from my HTC Desire using XDA App

With SetCPU running and set up properly, after a day of normal use (around 16 hours) on Shub's Cyanogen's 1.1 build I have around 15% battery left. So clearly you have something setup wrong to be only getting 6 hours. My battery life is now no worse than it was on Windows Mobile.

yeah i get over 20 hours

I got 20 hours with heavyish use for 10 hours, and 10 hours no use.
Which is about the same as i'd get with just winmo.
I could easily use this build for my day to day phone

trueside said:
I've try all of these tips not work for me How is yours?
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If I'm using the phone heavily, 12-15 hours. I have no idea how much idle time I would get as my phone is rarely idle as I use it for work constantly... And this is without using SetCPU or any of the battery life tips/tricks honestly. Keep in mind I use the T-Mobile "extended battery" case which recharges my battery with the flip of a switch on my case but I don't ever let it get below 20%.

Hmm I see. I'm starting to thing my battery problem doesn't about Android Builds maybe my SD cards needs a lot of power to work?? What is your android setup? Which build which zimage?

jjones1983 said:
If I'm using the phone heavily, 12-15 hours. I have no idea how much idle time I would get as my phone is rarely idle as I use it for work constantly... And this is without using SetCPU or any of the battery life tips/tricks honestly. Keep in mind I use the T-Mobile "extended battery" case which recharges my battery with the flip of a switch on my case but I don't ever let it get below 20%.
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um...that's not a really good comparison.
that's like saying "I can get 1000 miles on one fill up, but I have two tanks and just flip the switch for the second tank".
What do you get with out using the extended battery case?

HotShotAzn said:
um...that's not a really good comparison.
that's like saying "I can get 1000 miles on one fill up, but I have two tanks and just flip the switch for the second tank".
What do you get with out using the extended battery case?
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Sorry, I didn't make that clear. I get 12-15 hours without having to flip on my case. I usually switch it on at around 20%, which is why I said I never let it go below 20%...
Edit: I forgot he asked me which build and zImage as well.
MattC Froyo RC 1.4, 08/03 zImage.

battery "life" is not the main issue here.
in my opinion, the main issue is power management. that causes short battery life combined with high battery temperature.
can the devs say the reason(s) why is the power management that bad? that is the main issue with android builds right now, once it's solved, android can be a true main OS for everyday use.

trueside said:
Hmm I see. I'm starting to thing my battery problem doesn't about Android Builds maybe my SD cards needs a lot of power to work?? What is your android setup? Which build which zimage?
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i zimage is out yesterday

victorbd said:
i zimage is out yesterday
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where do you see a new zimage?
http://cotulla.pp.ru/leo/Android/
just checked and there's none for Aug5?

Other than using the latest zimage and SetCPU to force autoscaling CPU and Conservative CPU Governor, I've noticed Darkstone's vanilla froyo v1 build gives pretty good battery life (vs say, the CM RC1 build) by default.
I've also noticed that I get great standby battery consumption if I ensure that S2U2 is running in the WM background (as iLock2.exe) with the setting "Don't Suspend Power" unchecked in S2U2 options before booting into Android.
On a 3G network with a idle data connection, the (standard HTC) battery only drops 10% for a 10-11 hour standby time.

jjones1983 said:
Sorry, I didn't make that clear. I get 12-15 hours without having to flip on my case. I usually switch it on at around 20%, which is why I said I never let it go below 20%...
Edit: I forgot he asked me which build and zImage as well.
MattC Froyo RC 1.4, 08/03 zImage.
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You get 12 hours with heavy use? Mind telling us what Radio/Rom you are using? What other settings?
I managed to get to 8.5% per hour drain with normal use.
Of course, I never got better than that with WM anyways...

lol i get about 31 to32 hrs (1hrs mp3 and 30min internet) with light use

I must admit my android battery issues were solved with setcpu and screen brightness tweak.
Only funny thing is that with my setcpu profiles identical between Mattc-froyo and Shub-cyanogen, there is a short delay in the latter's response to a key press once screen is off and device locked. No delay on Mattc.....

Battery Life

Hungry Man ~
Lately I've been running the latest update of the same ROM (Nonsensikal Froyo - now 15.2) without any CPU apps (no o/c'ing through script either), no autokiller, no battery tweaks (just Juice Plotter) only 1 widget (Fancy Widget Pro), JIT enabled, VM heap @32, compcache @18 (default) and depending on which app I look at, TiB or RE, I have +/-110mb of free RAM, very minimal apps. Also, I upgraded to CFSv9. I even bought a Seidio Innocell 1750mh extended life battery. I recalibrate my battery after flashes ....
Oh yeah, a little more info, I am not a power user, just an average user with poor to ok reception, I tend to use wireless at my house b/c reception out here in the woods ain't good, but turn it off when not needed. I use airplane mode during sleeping hours as well. The max of my battery usage is Display, then And OS.
Ok, now the question ..... If I don't use airplane mode, I get maaaaaay-be 6-8 hours of average phone usage, usually less !!
What finally broke me to PM you now is that (i recently put numbers on my battery icon) while typing a text message earlier (a few minutes tops, not on wireless) I watched my battery click down from 50 to 48 !!!
When I charge my phone full & I easily lose 10% in half an hour (I've tried this with SetCPU, JD, CBT, Super Power, CPUBoost Lite - I think you get the gist) ... and not including airplane mode, I NEVER get more than 6-8 hours of battery life !!!
Is there any knowledge that you can give me on this issue or have I pretty much exhausted my options ? I am this PM short of resigning to crappy battery life
Many Thanks for your time ~
Matt
Swyped from my nonsensikal eris using xda app

What does the phone/Spare Parts say is using all the battery? Have you tried flashing and then using the phone without installing apps (other than the essentials?) Are you leaving the phone idle, screen off, and noticing the same big drop?
You could try going to stock for a bit to see if it improves...or trying a different ROM. Maybe you have a dud battery?
Edit: Sorry, you may have meant this to be directed at someone specifically.

Just an observation. If you're not using anything to overclock the phone maybe the battery life would be better if you at least underclock it. I suggest Conap's CPUBoost Lite, free on the market and here. Just set the minimum frequency to 245760 (my suggestion), and I currently have the screen off Minimum to 19200 and the screen off Maximum to 480000.
Also, I used to use Juice Plotter. I theorized that maybe Juice Plotter wasn't great for my battery itself.

roirraW "edor" ehT said:
Also, I used to use Juice Plotter. I theorized that maybe Juice Plotter wasn't great for my battery itself.
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I noticed the same thing when I used Juice Plotter. I got significantly less battery life when i had it. Try deleting Juice Plotter and see if you get more life out of your battery.

well you've noted your in a poor coverage area, and that is your problem, nothing can completely fix other than moving, but you may want to research flashing a new radio, becareful and check your md5 hash sums
Sent from my FroyoEris using XDA App

rigbyrobot said:
well you've noted your in a poor coverage area, and that is your problem, nothing can completely fix other than moving, but you may want to research flashing a new radio, becareful and check your md5 hash sums.
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Actually, the Verizon Network Extender can definitely help without moving. http://www.verizonwireless.com/b2c/store/accessory?action=gotoFemtocell
It's $250, but probably a lot cheaper than moving, and it should help with battery life. It does with me - I get 24-32 hours on a 1750 battery, with WiFi on all of the time (I have the old, non-3G extender.)

I'm running Tazz Froyo and get a minimum of 24 hrs on stock battery. I would try changing roms.

Battery life on my eris was never good, that's why you buy a extended battery. I have the biggest one that they have on amazon and my battery can last for five days with average use

doogald said:
Actually, the Verizon Network Extender can definitely help without moving. http://www.verizonwireless.com/b2c/store/accessory?action=gotoFemtocell
It's $250, but probably a lot cheaper than moving, and it should help with battery life. It does with me - I get 24-32 hours on a 1750 battery, with WiFi on all of the time (I have the old, non-3G extender.)
Click to expand...
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ohh well forgot about those
Sent from my FroyoEris using XDA App

so my battery has been draining really fast too, but my question is does the battery recalibration work? some people have said their battery drops even faster but is that only the first time?
PS. ive been on xtrrom for awhile now (like a month and a half) and it just started dropping. spare parts says android system is greater than the rest, if that helps

erisx said:
so my battery has been draining really fast too, but my question is does the battery recalibration work? some people have said their battery drops even faster but is that only the first time?
PS. ive been on xtrrom for awhile now (like a month and a half) and it just started dropping. spare parts says android system is greater than the rest, if that helps
Click to expand...
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Yes, it works if you do it propely. Charge phone to 100%, boot into recovery, wipe battery stats, reboot phone. Use your phone as normal until the battery is fully discharged and it shuts the phone off. I sometimes try to turn it back on also just to make sure it is all the way dead. Plug your phone in to charge it, walk away, don't touch it until it is 100% charged. Turn your phone on and use it as normal. It sometimes will take a few times charging it to see a difference. If I missed anything or mistyped anything some one correct me please lol

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?
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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?
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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.
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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!