GSam Battery Monitor - Monitor your android devices battery usage.
KWGT Kustom Widget Maker - Create your own Android home screen widgets
Accubattery - Monitor's battery capacity through the use of science
Minimalistic Text - This app generate widgets that display textual information in various styles and formats.
BatteryBot Pro - Shows your battery charge level (percent) as an icon in your status bar, with temperature, health...
Close Enough Clock - A next generation clock, a new and better way of telling time.