This is an easy-to-use battery tester for automobile. It supports 12V/ 24V battery voltage, and uses low frequency constant current detection and calculates the internal resistance of the battery after a series of processing. With intuitive large screen display, alligator clip with long line, and flashlight, it's extremely convenient to use in many kinds of batteries. Features: Multifunction battery tester: battery voltage/ internal resistance/ SOH/ SOC/ CCA, cranking test, maximum load test, and charge system test. With digital backlight screen for easy reading. Supports 12V/ 24V battery voltage type, constant low frequency current detection does no damage to the battery. Easily understand battery status. Alligator clip has great bite force; 62cm length ensures convenient use. Flashlight to illuminate dark environments, no fear and worry of darkness. Supports AGM/ GEL/ SLA/ VRLA/ Standard LSI and more kinds of batteries, can be widely used in petrol car, electric car, yacht and more vehicles. Compact and lightweight, it takes less space and is portable to carry. Anti-slip groove ensures comfortable grasp. No battery required, easy to use. Note: 1. Color and size may be slightly different due to manual measurement and different light conditions. Thanks for understanding. 2. Please read the user manual carefully before use. Specifications: Color: Grey Material: ABS Battery Voltage Type: 12V, 24V Item Size: 152.5 * 79.7 * 27.6mm / 6.00 * 3.13 * 1.08in Package Size: 205 * 138 * 76mm / 8.07 * 5.43 * 2.99in Package Weight: 400g / 14.11oz Package List: 1 * Battery Tester 1 * User Manual (English)