Description This item is a battery checker testerfor 9V, D type, C type, AA, AAA, button battery. With it you can easily get the current volt of the tested battry, and know which batteries to keep and which to throw away, 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 - A great gadget for instant testing for battery capacity- Portable, easy to use. Just place your battery between the two points of the battery tester, and the pointer will display the result.- Digital LCD display, Easy to read- Suitable for checking power level of all 1.5V disposable batteries and 9V rechargeable batteries, such as 9V, D type, C type, AA, AAA, and button battery.- With it you can easily get the current volt of the tested battry, and know which batteries to keep and which to throw away. 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: 11 x 5.9 x 2.5cm- Applicable voltage: 1.5V, 9V- Applicable Battery Model: for 9V, D type, C type, AA, AAA, button batteryPacking list: 1 x Portable Battery Tester