Description: Quickly test the condition of your battery in seconds. Has a movable arm to hold the battery. Test different battery sizes in just one unit. This device really works if you don't know which batteries to store. Measured battery of 1.5V, AA,AAA and 9V, it could be measured whether the electric quantity is enough, pointer to directly display measurement results. Indicated color introduction: Red(RE-PLACE): indicate here, then the battery need to replace or re-charge, that is, the battery is nearly not use. Yellow(LOW):electric quantity is less, but it also could be used for some electrical appliance. Green(GOOD) :enough Method of application: 1 . Use 9V battery connects to two testing hold of side tester directly, please attention the positive and negative pole. 2. 1.5V, AA and AAA battery, push aside the test arm at the top of tester, get battery to snap-in, please attention the positive and negative pole. Specifications: Item name: Battery Tester  Material: Plastic Color: Black Size: 5x5x3cm Note:  - There might be little error of size for manual measurement. - The colors deviation might differ due to different monitor settings, please kindly understand. Packing list Package Includes: 1 x Battery Tester