BT168 Universal Battery Checker Tester for AA AAA C D 9V 1.5V Button Cell Batteries Universal battery detector Button cell tester Pointer tester Battery capacity tester Battery tester Electric quantity tester Fit For: AA/AAA/C/D/9V/1.5V Button Cell Battery (Batteries not included) This will keep you from wasting good batteries by thg out good ones. Small and practical - Simple but effective little battery tester checker(BT-168) , compact size and lightweight,easy to carry. Testing defferent battery types - It works with standard and rechargeable household batteries: AA, AAA, C, D, 1.5V,9V and button type. Perfect for home use - Great small tool can tell you if your battery is good, low, or needs to be replaced.A buy for anyone who uses regular or rechargeable batteries on a regular basis. Color: black Require no battery to operate - Easy-to-read ,the analog display needle moves on a color-coded, calibrated scale to quickly identify good (green), low (yellow), and replace/recharge (red) battery status. No batteries required. It is activated by the battery being checked.Perfect for home use - Great small tool can tell you if your battery is good, low, or needs to be replaced.A buy for anyone who uses regular or rechargeable batteries on a regular basis.This will keep you from wasting good batteries by thg out good ones.