Test almost any battery with our battery tester. Works with 1.5V, 9V (6F22), and cell type button batteries- Supported batteries: AAA, HP16, MN2400, R03, AA, HP7, MN1500, UM3C, HP11, MN1400, SP11,...
Battery interrupters let you use a switch to turn on and off most battery operated toys and devices. An inexpensive and easy way to use toys or devices you already own!
So, what makes our battery...