Automobile Battery Tester Features: Test and analyze battery load system, indicating battery condition including Battery Life Percentage, CCA, Battery Voltage, and Battery Resistance to help prevent unexpected shutdowns. Performs continuous test with battery power without damaging the battery. Built-in reverse polarity and over voltage protection for enhanced safety. Wide CCA test range from 100 to 1700, providing reliable and accurate results for various battery sizes. Compatible with most 12-volt battery types, including Flooded, AGM, Gel, and Deep Cycle batteries. Fast and precise operation. Equipped with a large LED screen, heavy-duty clamps, and beep alert function for improved durability and ease of use. Specifications: Model: A300 Battery Tester Test Object: 12V Battery Input Voltage: DC 12V Test Items: Voltage, Resistance, CCA, Battery Condition CCA Range: 100–1700 DIN Range: 100–1000 IEC Range: 100–1000 EN Range: 100–1700 Battery Life Percentage Indication: 80%–100%: Good Condition 60%–80%: OK, Not Bad 40%–60%: Need Attention 0%–40%: Bad, Requires Replacement Material: Plastic Size: 12.5 x 6.5 x 3 cm / 4.92 x 2.55 x 1.18 inches Package Contents: 1 x Battery Tester 1 x Instruction Manual