1.5v & 9v Battery Tester Bt-168

Don't know 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 squeeze out another few minutes of battery life. Checks power level of all 1.5V & 9V batteries. Easy to read, colour coded metre indicates power level. Tests 1.5V miniature cells. Three result: red=replace, yellow=low power, green=good. If needle does not move,check 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: AAA, AA, C, D & 9V.