Top rated in Battery Utilities

Wattagio
1.3.1
Monitor and control the battery condition of your device.
Battery Checker
1.0
FREE
Battery Checker notifies you when your device battery is full.
Better Battery Info
1.0.0
Tool that monitors and optimizes the battery life.
BattMan
1.4
The application monitors the status of your battery and power.
BatteryRun Pro
1.0
Application that monitors your battery usage.
BatteryNotifier
1.3
FREE
This is an OS X tool that warns you if your iOS devices need a charge.
Best Battery Manager HD
2.0
FREE
Track, maintain, and log your battery charging habits.
TLOB
1.0
FREE
Monitors the battery time remaining when using your Macbook.
BattSafe
1.1
FREE
Shows battery charging data and gives advice on improving its life and capacity.
YaBattery
1.4
Gives you a comprehensive overview of your battery.
PowerSaveUPS
2.0
Macintosh only scriptable software for controlling UPS.
Power Save Assistant
Keeps computers running when users need them and accurately.
Install FastAndSlow
FREE
This MenuExtra addition adds the ability to switch the Powerbook/iBook CPU/iMac.
Battery Stats
A quick and simple Status Bar app to show you your remaining battery time...
iPodBatteryIndicator
1.1
FREE
This small App is used to change the iPod battery indicator.
Battery Bar
1.0
Battery Bar shows a visible green bar at the top or bottom of your screen.