FAST Battery Tester Digital Display Parameters 12V/24V Car Battery Charging Tester Function: Internal resistance detection, voltage detection, remaining life detection, discharge current detection Specifications: 1. Wide range of use (12V/24V), applicable to a variety of vehicle battery testing 2. Capable of detecting multiple battery parameters including internal resistance, voltage, discharge current, and remaining life, allowing comprehensive testing in one device 3. Features multiple protection functions: no damage from incorrect connection within 100V, protection against reverse polarity connection, and intelligent alerts for poor clip contact 4. Equipped with intelligent chip control for high-accuracy detection and fast data processing 5. Intelligent screen provides full content display, showing all test results simultaneously for easy reading 6. Simple operation: connect positive and negative clamps, select battery type, press OK button to instantly obtain test data within 10 seconds Color: Yellow-Black Material: Plastic Package Contents: 1 x Car Battery Tester Note: Light and display differences may cause slight color variation between the image and actual item. Measurement error allowance is +/- 1-3cm.