Test -batteryCheck the charge of all 1.5V and 9V batteriesEasy to read with digital displayUniversal Button Battery Checker Tester AA AAA C D 9VPlace the battery between two points of the battery testerType: Battery TesterThe battery tester can be used to test the following:lithium battery:(1).3.7V2.18650, 16340, 14500, 10440, 21700(1). 1.5V:2. AAA, MN2400, R033. AA, HP7, MN1500, UM34. C, HP11, MN1400, SP11, LR14, UM25. D, HP2, MN1300, SP2, R20, UM16. 9V: PP3, MN1604, 6F22, 006PMaterial: ABScolour: blackPackage Contents:4 x BT-886 Battery TesterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.