Leading U.S. military battery vendor EaglePicher has introduced a breakthrough innovation for its military batteries that many of us have gotten used to on our personal electronics: a power meter.

Added military benefit: perhaps they blow up
like grenades when tossed into a fire?

Soldiers can now press a button to have LEDs light up showing the remaining charge in the battery. Which means they now have a better idea of when to throw them away (or at an enemy.)