CR2450 CR1/3N 6 V 28 Series 28A S28 28L 3V Lithium CR123 CR2 CRV3 1.5 V Alkaline AA AAA C D N 12 V Alkaline A23 9 Volt Alkaline Army dry battery tester. Works by measuring loaded voltage. The set can be carried on a belt and tests radio batteries, Vietnam era. Uses high curre...