The Ansmann 1900-0037 universal battery tester from HyCell is a compact tester for many battery packs and batteries. With this universal battery tester you can test the charge state of all standard batteries as well as rechargeable battery packs. Over 12 different battery types can be tested, eg. AAA, AA, C, D, 9V, Lady N (LR1), CR123A, CR2, CR-V3, 2CR5, CR-P2 and button cells, etc. The capacity state of the battery or battery pack is displayed on the LCD indicator after inserting the battery in the suitable slot. It is differentiated between weak, normal and good, indicated by 18 bars on the LCD display. Included in delivery is one AAA battery to power the battery tester.