Specification: Battery Size: 1.5V | 9V Good: 1.5V ~ 1.28V| 9V ~ 7.8V Low Power: 1.3V ~ 1.15V| 7.8V ~ 6.3V Replace: Below 1.15V| Below 6.3V Size: approx. 110 x 60 x 25mm/ 4.3"" x 2.4"" x 1.0"" Note: For 1.5V and 9V batteries, read off LCD. For 1.5V mininature cells, read off LCD. IF LCD does not display, check that battery is touching both contacts before assuming that it is completely dead. This Battery Tester is activated by the battery being checked. Keep test times as short as possible, to avoid unneccessary battery drain. Feature To test all different kinds of batteries (AA, AAA, C, D, 9V, mini cell) Check the power level of all 1.5V, 9V, and 1.5V miniature cells Can quickly test the capacity of your battery Easy-to-read, digit indicates power level Test multiple sizes of batteries in one unit. (1.5V: AAA, HP16, MN2400, R03, AA, HP7, MN1500, UM3, C, HP11, MN1400, SP11, LR14, UM2, D, HP2, MN1300, SP2, R20, UM1; 9V: PP3, MN1604, 6F22, 006P Note: 1.Please allow 2-3mm differences due to manual measurement. Package Include 1*Battery Tester (Batteries NOT included.)