BatteryBar is one of the most accurate battery meters available.
BatteryBar is a battery status meter toolbar that displays the status of your battery in the taskbar at the bottom of your screen. As you use your battery, BatteryBar keeps historical data on how fast it discharges and charges.
While discharging, BatteryBar shows the percentage as a horizontal bar, colored green above 35%, yellow between 20% and 35%, and red below 20%. It shows the time remaining in hours and minutes.While charging, BatteryBar is blue to indicate charging, and displays the amount of time left until the battery is fully charged.
Requires Microsoft .NET Framework 2.0.