BatteryFu extends battery life by changing always-on mobile data to periodic sync (meaning it disables your mobile data and/or Wifi, then checks your accounts every X minutes).Gives 4 days of battery life on a G1!
Also great for tablet use to keep accounts sync’d even if WiFi goes to sleep due to WiFi sleep policy.
-Lean and fast (see download size!)
-APNdroid support (recommended for CDMA users)
-Toggle widget: tap icon to toggle, tap text to config
-Data while screen is on
-Data while charging
-Do not move to SD
-Disable before uninstalling
-Make sure you don’t have other background services killing your battery (e.g. apps with services running off SD card), otherwise you won’t see much benefit.