Features: The BT500 Car Battery Tester delivers precise voltages, capacity, and internal resistance measurements in 3 seconds using advanced diagnostic algorithms, ideal for evaluating 12V/24V batteries up to 300Ah across cars, SUVs, and light trucks. Featuring ABS composite housing and accurate sensors, this compact diagnostic tool combines portability with lab grade accuracy, while its LCD screen simplifies data interpretation for all skill levels. Designed for professional mechanics, fleet managers, and DIYer car owners seeking battery health insight during routine maintenance, roadside emergencies, or pre trip vehicle inspections. Quickly diagnose weak batteries causing ignitions issues in garages, auto repair shops, or remote job sites – its lightweight build (under 1lb) fits effortlessly in glove compartments or toolkits for on the testing. Outperforms standard plastic testers with triple layer shock resistance and temperature compensated readings, ensuring consistent performances whether checking winter start capability or monitoring marine battery banks. Specifications: Component:ABS voltages: 12V-24V Working temperature: 0 - 40℃ Working humidity: 20% - 80% Screen parameters: LCD, LED backlight Package Includes: 1Piece Car Battery Tester note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.