Detailed Product Description -MINI BATTERY CHECKER (CE certification)- Features:1) microprocessor controller with 5 degree LED display 2) Auto Power ... alert 4) Testing capacity: 1.2V NiMH rechargeable [AA,AAA,C,D] 1.2V NiCd rechargeable [AA,AAA,C,D] 1.5V alkaline [AA,AAA,C,D,N ... * 2.5*0.75 inch 8) Power source : AAA Size 1.5V X 4 9) Weight: approx. 3 oz. (85g)