Professional Updated Version Battery Tester: Designed for all 5-30V batteries (6V, 12V, 24V), including flooded, flat plate, spiral wound, and gel batteries. Based on international standards EN, DIN, SAE, BCI, GB, CA, and IEC, supports starting and charging system testing, as well as generator testing to check generator output voltage, rectifier diode, and charging current under normal conditions. Wide Compatibility Digital Battery Tester: Features advanced conductance test technology. Provides results including SOC, current, rated power, resistance, idle voltage, charge voltage, and charge ripple value. Compatible with cars, motorcycles, heavy trucks, boats, and other vehicles. Accurately and quickly measures cold cranking ampere values, battery starting ability, and overall health condition. Unique Design with Color Screen: The BT-30 battery analyzer includes a 2.36-inch color TFT screen with a skeuomorphic interface, 3 LED indicator lights, 5 large rubberized control buttons, and an ergonomic grip design. Offers clear menu navigation and full-color display for easy operation. Useful Smart Device and Problem Solving: Conductivity directly correlates with battery capacity. This tester does not discharge or drain the battery during use. Capable of testing discharged batteries with passive measurement technology for safe operation. No internal batteries required—device powers on automatically when connected to the battery terminals. Color: Black & Green Material: ABS Package Contents: 1 x Battery Tester Note: Light reflection and display differences may cause slight color variation between the image and the actual item. Measurement error allowance is +/- 1-3 cm.