GiMeSpace Power Control - Software for extending windows desktops and other utilities for making windows easier.
coconutBattery - With coconutBattery you are always aware of your current battery health. It shows you live information about the battery in your Mac and iOS devices (iPhone, iPad)
Aerofoil - Aerofoil extends Vista and Windows 7 notebook battery life by:
Accubattery - Monitor's battery capacity through the use of science
Battery Mode - Replaces Windows default battery indicator to a more powerful and useful one.
GSam Battery Monitor - Monitor your android devices battery usage.