[Optimus One, P500, V General] vj_dustin:
The one thing i'm most after is saving my battery :D

so i gathered up a few tricks which you can use without using your phone like a Nokia 1100.. :D

You might have read many from the below, but some might be new to you.. :)

1) Brightness.. Keep it 0% indoors, 50-(as much required)% outdoors.

You should keep the brightness minimum but dont push your eyes for battery saving purposes..

Use as much brightness as u would need to view stuff outdoors..

EYES>>BATTERY :D

2) The lesser the eye candy, the more battery life you get.

Ok, you got an android, you want to show off with fancy stuff.. :D

but the more the widgets/apps you use to beautify, the more they consume your battery.

so use minimal widgets (none if possible)..

& DONT USE LIVE WALLPAPERS..!!

they look awesome no doubt but suck up the juice faster than i'd empty a coca-cola.. :D

3)Overclocking..!!

Now different users have different experiences but i guess almost all would agree with the guy who made the kernels.. :D

as fserve says and as i have experienced myself

use

Smartass - for best performance : battery saving ratio.

Conservative - for best battery backup with normal performance.. (multitasking might be slow [have experienced only with Opera Mini], rest all apps multitask with no lag)

Keep minimum frequency at 480Mhz (BEST VALUE)

If you want little more battery keep it at 122Mhz (if you dont mind the occasional blackscreen bug or a freezes/hangs that it might cause :p)

&

Keep the max at 652-768 as you wish..

Just mind that battery life will depend on the amount you choose..

So if you are a gamer choose high (as for you performance > battery)

all others can go for 652-729 as u prefer..

4) ROM

Now your ROM also determines your battery very significantly..

Every ROM has different apps it runs int he background.

Now i cant comment as to which is bad or which is good, coz every developer has done a great job with their ROM.

But as a general observation i can say, by far

OXYGEN v1.1 (.32 kernel) has given me the max battery backup (even though it doesnt lack on performance a bit)

Rest you should try out yourself for the best one that suits you

JUST DONT STICK TO LG OFFICIAL GINGERBREAD.. NOT A SINGLE PERSON IS HAPPY WITH IT!!

5)No Battery saver/Task Killer/Memory optimizer bullcrap..!!

Its as simple as that, as much you think they save your battery, they definitely consume some to run themselves..

So its best to do stuff manually than install all this..

PS: If you are too lazy you can stick to them.. :rolleyes:

6) TTS Trick

You must have the voice input output setting in settings.

And you must have the Pico TTS installed in it..

Just tick always use my settings in there..

It reduces your CPU consumption as the phone doesnt check everytime for settings and uses the default ones..

Cant say if this has increased my backup marginally, but meh, doesnt hurt.. :D

7) Games means less backup..

You are on a 10k 1500mAh phone.

So dont expect full day backups if you are an avid gamer..

with heavy usage if you are getting 10-12 hrs backup, you are lucky.. :D

people with 1-2 days backup use phone as a smartphone not a PSP..

and people with more than that backup (3-7 or 11 days), use phone as a nokia phone not a smartphone.. :P

8) Location

If you want to use weather widgets etc. skip this step

For all others, in settings > location & security untick both wireless & GPS options.

You can tick them whenever you need, like to check-in..

Just turn them on and after you are done, turn them off.. :)

9) 3G

I think everyone knows 3G is a major battery hogger.. :D

For calls etc use 2G

as for internet usage

Wifi > 2G > 3G

Though mind that even 2G uses quite some battery as your network keeps searching for better signals..

So wifi is the best option..

10) Auto Sync

I personally dont use this option, coz as i said earlier, i own a smartphone.. :D

anyhow disable background sync option in settings > accounts & sync for more backup..

11) Battery Hoggers

I personally only have noticed Facebook as one of the worst battery hogger :mad: (mark suckerberg)

but

sweetnsour has pointed out certain more apps that consume considerable amount of battery. so avoid them..

Google Maps

Task killers

GetJar

XDA

12) TITANIUM BACKUP

I cant imagine my life without it..

Its a MUST HAVE app..!!

you can freeze battery hoggers with it, if you dont want to remove them.

Just defrost later to use them..

You can even remove system apps which might be unnecessary (like car home, gtalk, or others as per your usage and requirements)

13) AIRPLANE!

Unless you are some hot-shot businessman :p u should keep ur cell at airplane mode at night.

Not only will it save LOTS of battery on standby, but will save you from the radiation as well if u keep ur phone near ur head.. :D

14) BATTERY CALIBRATION

If for some reason, you are having unreasonable drains and you cant figure out what the problem is, Calibrate your battery.

I recently faced this problem and now its back to normal..

Its free & easy, just follow the steps d developer has mentioned.

Market

Sources : Personal Experience, XDA, Google