Digital battery tester, universal battery tester, compatible with AA, AAA, C, D, PP3, 9V, 1.5V and button cell batteries, works without batteries.

Small and portable: This small AA battery tester (BT-168D) is compact and lightweight, making it easy to carry. Test various battery types: The battery tester is suitable for standard household and rechargeable batteries. It includes AA, AAA, C, D, 1.5V, 9V, and button cell batteries. Battery-free operation: Easy-to-read numbers indicate the power level. No batteries are required; it is activated by the battery being tested. Easy to read: The portable design makes it easy to read the battery voltage, which is displayed on the LCD screen. Battery saving: You can easily test the battery voltage to determine if the battery capacity is low or high, preventing you from wasting a perfectly good battery.