The Probert Encyclopaedia of Science & Technology

BATTERY WATCH

Battery Watch is a computer program for laptop computers. Because laptop computers run on batteries, they sometimes lose power at inconvenient times. Battery Watch monitors the amount of power left in the battery of a laptop computer. Although many laptops have power indicators, they may only give a 10-15 minute warning.
Battery Watch lets you check power level at any time, so you'll never be caught off-guard.
Battery Watch is a Terminate and Stay Resident (TSR) program which is activated by a hotkey. The hotkey displays the power gauge on-screen showing immediately how much time is left on the machine. The hotkey can be changed so it does not interfere with other RAM-resident programs that use the same key.
Research Battery Watch