This item is a universal battery checker tester AA AAA 9V and button cell battery. With it you can easily get the current volt of the tested battry, and know which batteries to keep and which to throw , place your battery between the two points of the battery tester, and the pointer display will indicate that whether there is a battery need to be replaced. Great tool to check power level of all 1.5V and 9V batteries. Features - Easy to read, colour coded meter indicates different power level. - Portable, easy to use. Just place your battery between the two points of the battery tester, and the pointer will display the result. - Three color indicates three different results: Red=Replace, Yellow=Low power, Green=Good. - Suitable for checking power level of all 1.5V disposable batteries and 9V rechargeable batteries, such as (AA), No. 7 (AAA), (D or L), No. 2 (C or II), series button batteries, etc. - With it you can easily get the current volt of the tested battry, and know which batteries to keep and which to throw . Warm tips: - The battery tester is activated by the battery being checked. Keep test times as short as possible, to avoid unnecessary battery drain. - If the pointer does not move, check that battery is touching both contacts before assuming. Specifications - Color:Black - Material: Plastic - Product Size: 110 x 60 x 30 mm - Applicable voltage: 1.5V, 9V - Pointers point: Red, yellow, green, from - Style: Pointer - Applicable Battery Model: 1.5V (AAA, for HP16, MN2400, R03, AA, HP7, MN1500, , C, HP11, MN1400, SP11, LR14, UM2, D, , MN1300, , R20, UM1); 9V: ( , MN1604, 6F22, 006P) Package list: 1 x Portable Battery Tester