Mini ABS Battery Tester Battery Controller with LCD Screen for D Type Battery, CN Type Battery No. 5/7/N, LR44 (1.5v Button Cell), 9V Battery, 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, CN-type #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 measuring. Also, keep the test time as short as possible to avoid unnecessary battery drain.