Instant Reading Battery Voltage Tester For 9V Block Aa C D Button

Testing Range: 1.2V – 4.8V & 9V. Rectangular Batteries: Standard 9V. 1PCS Battery Tester Checker. Standard Cylindrical Batteries: AA, AAA, C, D, and N type. Compatible Battery Types Button & Coin Cells: All 1.5V and 3V cells (including CR2032, LR44, AG series).