Instant Battery Charge Tester Tweezers - 1.5V - 3.0V - Alkaline, Button Cell, Lithium Wafer Fastest & easiest way to check battery charge Just touch battery ends with tweezers - red handle to positive, black to negative Proper charge, red LED in handle lights up; dim for 1.5V, bright for 3.0V Works with any 1.5V or 3.0V battery - AAA, AA, C, D, button cell and Lithium wafer Prevent wasted batteries - watch, hearing aid, flashlight, key fob, calculator, remote control & more