1. This battery tester is used for lead-acid starting battery, along with checking the following conditions of the battery, starting up, charging, and loading. 2. With great design, easy operation, precise reading, complete functions, this tester supply the readings by a large LCD and hints by sound and light when testing. 3. It utillizes 4-wire Kelvin method to complete collection of a series of complicated data for calculating every testing data with build-in precise circuit and improved digital processor. 4. Some circuit improvements including polar reversal protection, over voltage input protection, loose lead detection, ensure safety and convenience during testing. 5. Voltage: 12V
