Here is a guide to increase your battery life to 7+ days with regular to moderately heavy use.
Note:Read all directions FIRST and make sure you understand them. If you have any questions, please post and I will do my best to help you out or atleast point you in the right direcion.
Note: Follow this guide carefully as some of the steps can mess up your phone.
Section 1: How TO CHarge Your Battery
The OEM Stock Battery that comes with the phone is a 3.7V, 950mAh Lithium-ion Polymer Battery. By default, when your phone is charging, it is charging the battery then trickle charging it once it's been completely charged. Follow these instructions for prolonging your battery's life and life span:
1.)Atleast once a month, drain your battery completely and then let it charge, while turned off, over night. (Best if charged by computer.)
2.)Do not charge youur battery next to a heat source such as a heater or oven as this degrades your battery's life span and its capacity to hold a charge.
3.)If your phone/battery gets hot while charging, immediately unplug your phone, pull the battery out, and open it to display the internal keyboard.
Section 2: Tweaks to increase how long you can go without having to charge your phone.
This first one can easily double or even triple how long you can go without charging. THis will slow down your internet and should still allow your apps such as VZ nav to still work.
2.)ENter in security code (Usually 6 zero's)
3.)Go to Network Select
4.)Go to Mode Preferece
5.)Select 1X Only
What that does is it tells your phone to only look for and use the more common 1X service instead of the spotty EVDO.
Note: This can be reversed easily by Dialing *228, option 1.
Next, change the following:
Touch Vibration Effect>Off
Mobile Email>Push/Notification of new email=Off
External Backlight>7 or 15 sec.
Internal Backlight>7 or 15 sec.
Keybad Backlight>7 or 15 sec.
Also: It helps to keep as much phone memory cleared as possible. I don't know why, but it does help alot.
Section 3:Other things
Once a week, run the "Roaming Capability Update". To do this:
Your phone will play some amazing elevaor music;o)
Once done, your phone will reboot automatically.
In the service menu (##LGSERVICEMENU, 6 Zero's), Do the following(Best if you turn Airplane mode ON for this as to not interupt anything):
>Field Tests-LG>Power Save Mode>Yes
>H/W Tests-LG>Bypass Booting>Charging Timer>OFF
Your phone will reboot after each one.
All of the above suggestions have been tested by myself and should work. they have worked flawlessly for me.
Note: I am not going to be held responsible if you go and mess something up and brick your phone. Do not quote me on anything I have told you what to do and how to do it. Have fun