Features: Universal Button Battery Checker Tester AA AAA C D 9V Don\'t for Guess Which Batteries to Keep and Which to throw Away Place your battery between the two points of the battery tester and the easy-to-read display will tell you instantly whether you have a dud or if you can eke out another few minutes of battery life. Checks power level of all 1.5V & 9V batteries Easy to read colour coded meter indicates power level Tests 1.5V miniature cells Three result: red=replace yellow=low power green=good If needle does not movecheck that battery is touching both contacts before assuming that it is completely dead. The battery tester may be used to test the following sizes: 1.5V: AAAfor HP16 MN2400 R03 AA HP7 MN1500 UM3 C HP11 MN1400 SP11 LR14 UM2 D HP2 MN1300 SP2 R20UM1 9V: PP3 MN1604 6F22 006P NOTE: The battery tester is activated by the battery being checked. Keep test times as short as possible to avoid unnecessary battery drain. AAA battery not included Specification: Original box: NO Color: Black Item size: 110*59*25mm Net weight: 51g Packing content: 1 x Battery Tester