Mini ABS Battery Tester Battery Controller with LCD Screen for D-Type Batteries, C-Type Batteries No. 5/7/N, LR44 (1.5V Button Cell), 9V Batteries, 6F22 (Black)

[ABS Material] Made of insulated ABS plastic, this universal battery tester is lightweight, compact, and easy to use.It is powered by the battery being tested, and no other battery is needed.[Battery Detector] This miniature battery detector can determine the battery's charge by detecting the battery voltage, maximizing battery usage and reducing unnecessary waste.[High Compatibility] Can be used to test D-type batteries, C-type No. 5 batteries, Type 7 batteries, N-type batteries, LR44 (1.5V button cell) batteries, 9V batteries, and 6F22 batteries.[LCD Screen] The LCD screen displays the battery level: red indicates the battery needs replacing, yellow indicates the battery is too low, and green indicates the battery is sufficiently charged.[More Tips] Pay attention to the positive and negative terminals of the battery when taking measurements. Furthermore, keep the test time as short as possible to avoid unnecessary battery drain.