Features: The FY8912A Car Automotive Battery Tester offers comprehensive diagnostics for 12V/24V batteries, providing accurate result in just 2-3s with a 99.5% accuracy rate, making it essential tool for maintaining battery health. Ensures precise measurements of internal resistance, voltage, and discharge current while offering multiple protections like polarity reverse and overvoltage safeguards. Suitable for automotive professional and vehicle owners alike, suitable for trucks, motorcycles, ATVs, SUVs, boats, and more, ensuring reliable performances across various vehicle types. Suitable for use in garages, workshops, allows for easy testing without the need for additional power sources, making it convenient to carry. With its user friendly interface and suitable for 12V/24V car batteries, quickly assess battery state charging and health, ensuring vehicles is ready for the road. Specifications: Component:ABS Size:Approx.90x80x33mm/3.54x3.15x1.3inch Package Includes: 1 Set Battery Tester note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.