This is a handheld digital battery tester for easy-quick-accurate checking car lead-acid starting batteries with IC and special software support. It has a heavy housing with a robust compact protective holster. It can select the battery capacity, and then accurately measure the voltage, and proceed testing via one push-button and automatically stop testing within 10 seconds. Reverse-connection protection and self diagnose function. Smaller size. Lightweight structure. Not required for inner battery power. HS code: 90318990.