Feature: 1. Function: With battery check, power function test, battery startup capacity check, battery overcharge display function. 2. Multiple LED Lights: Multiple LED lights show the status of the battery and alternator, green for good/full, orange for medium, and red for low. 3. Reverse Protection Function: The reverse protection function prevents burnout due to misoperation between (+) battery terminals and (‑) cable terminals. 4. Good Electrical Conductivity: Pure copper wires and clips have good conductivity and high sensitivity, and the anti slip design allows you to use them flexibly while wearing gloves. 5. Applicable Scene: Compatible with all 12V charging systems, including for cars, forklifts, boats, RVs, motorcycles, etc. Specification: .Item Type: Car Battery Tester Material: Plastic, Pure Copper Voltage Measurement: 9-12V Applicable: Suitable for All 12V Charging Systems, Including for Cars, Forklifts, Hybrid Cars, SUVs, Pickups, Boats, RVs, Motorcycles . Weight: Approx. 69g / 2.4oz Package List: 1 x Car Battery Tester1 x Chinese and English User Manual