Functions: 1. Battery Test 2. Charging System Testing 3. Start System Test 4. Max.load Test 5. Monitor the status of the start system of the vehicle 6. Test the change of the voltage when start the vehicle 7. Can test battery standard: 100-1700CCA, 100-1000DIN, 100-1000IEC, 100-1700EN, JIS. Features: 1. Quickly test the battery main specifications: Internal Resistance, CCA, Voltage, Electric quantity, Life-span. 2. Various standards build-in. 3. Adopt conductance method to test: convenient and safe. 4. Clock inside. 5. Printer inside can print out testing results anytime. Specifications: Power supply: Powered by the battery been tested. Voltage range: 9-18V(DC) Working temperature: -18~50C Test accuracy for internal resistance: 0~200m Guaranteed for one year. Dimension: 221mmx99mmx31mm.