Description: Multiple protection: It has reverse-hookup and over-voltage protection, making it safe and simple to use. With a four-character lighted digital display, this battery voltage tester is easy to read with accuracy. Differet color LED indicates battery or alternator status. Application: battery test, maximum load system test, charging system test, starter system start load test Applicable to: electric vehicles, motorcycles, cars, agricultural vehicles, large trucks, engineering vehicles, ships, excavators, etc Name: Battery Tester Product Name: automobile battery tester Product material: plastic Product color: Black Magnetic: no Positive and negative electrodes: red positive electrode, black negative electrode Test object: 12V battery Voltage range: 4v-20v Net weight: 126 G Product features: 1. Fast reading to determine whether the vehicle battery needs to be bridged or replaced; 2. Reverse connection and overvoltage protection; 3. There is a 3-character digital display, which is easy to read; 4. Led in different colors indicates the status of battery and charging system; 5. Sound prompt; 6. The voltage display is accurate, the appearance is simple, and the operation is simple and easy to understand. Packing list: 1* Battery Tester