Originally Posted by doonasmith
Install the Battery Defender -Battery Saver application. It will save gradually increase the battery when WiFi is not used. The WiFi is biggest component that consumes the battery in your phone.
Shouldn't make a difference between GB and ICS, besides, that can be helped; my Note switches wifi off when the screen is off, it is a setting (Adavanced: Keep Wifi on while sleeping). Only problem is, if you like to listen to streaming music you have to disable this temporarely.