Compatible Batteries:9V:PP3, MN1604, 6F22, 006P; 1.5V: AAA, HP16, MN2400, R03 AA, HP7, MN1500, UM3 C, HP11, MN1400, SP11, LR14, UM2 D, HP2, MN1300, SP2, R20,UM1 * Precise design and light weight, usable and portable. Easy operation, no power needed and easy readout: color coded meter indicates power level. * Designed for quickly testing the capacity of the battery. * Two buttons on the side specially designed for testing 9 volt batteries. * Movable arm to accommodate the battery, suitable for testing multiple sizes of batteries in one unit.