Do not need internal battery
Battery Tester to test all different kinds of batteries (AA, AAA, C, D, 9V, mini cell).
Easy-to-read , digit indicates power level.
Check the power level of all 1.5V, 9V, and 1.5V miniature cells.
Able to quickly test the capacity of your battery.
Test multiple sizes of batteries in one unit.Useful to clean home batteries.
Battery Tester to test all different kinds of batteries (AA, AAA, C, D, 9V, mini cell).
Easy-to-read , digit indicates power level.
Check the power level of all 1.5V, 9V, and 1.5V miniature cells.
Able to quickly test the capacity of your battery.
Test multiple sizes of batteries in one unit.Useful to clean home batteries.
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