AA AAA Battery Capacity Indicator Lithium Battery Indicator Battery Level Tester Monitor Detector Storage Box Holder Case Notice: Battery is just for display,it is not included!!!!! USAGE Put the battery into the battery box and judge the charge according to the indicator light. 4 lights: full charge 3 lights: more power 2 lights: low power (mouse, remote control and other low power electrical appliances can still be used) 1 light: almost out of power (it is recommended to replace) BT-168D Battery Tester Digital Battery Tester 9V/1.5V/AA/AAA Battery Capacity Tester Button Cell Volt Checker Universal Battery Tester BT-168D Power Describe: Universal button battery tester AA AAA CD 9V Don't gue which batteries should be kept and which should be thrown away. Place the battery between two points on the battery tester. The easy-to-read display will tell you if there is a malfunction or if the battery life can be maintained for a few more minutes. Check the charge of all 1.5V and 9V batteries immediately. Easy to read, the color-coded meter indicates the three results of the battery power test 1.5V micro battery: red = replacement, yellow = low battery, and green = good. If the pointer does not move, please check if the battery is touching the two contacts, and then think it is completely dead. The battery tester can be used to test the following sizes: 1.5V: AAA, HP16, MN2400, R03AA, HP7, MN1500, UM3C, HP11, MN1400, SP11, LR14, UM2D, HP2, MN1300, SP2, R20, UM19V: PP3, MN1604, 6F22, 006P Specification: Colour: Black Size: 110*59*25mm Package includes: 1*Battery tester (excluding AAA batteries) Notice: The battery tester is activated by the checked battery, keep the test time as short as poible to avoid unneceary battery consumption