1. Test all automotive cranking lead acid batteries, including conventional lead acid, flat plate, spiral, and gel batteries. 2. Detect faulty cell batteries directly. 3. Polarity reverse connection protection; reverse connection will not damage the tester or affect the vehicle or battery. 4. Test batteries with low charge; no need to fully charge before testing. 5. Testing standards include most major global battery standards: BC1, CA, DIN, IEC, EN, SAE, GB. Main functions of the BA101 battery tester include: battery test, cranking test, charging test, and additional diagnostic functions. Voltage Measurement Range: 8–30V DC Product Specifications: 1) Display: LCD, 2 lines, 8 characters, backlit 2) Operating Temperature: 0 to 50°C (32 to 122°F) 3) Storage Temperature: -20 to 70°C (-4 to 158°F) 4) Power supplied via detachable heavy-duty OBD-II cable Color: Red Material: Plastic Package Contents: 1 x Battery Tester Only the items listed are included; other accessories are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1–3 cm.