DI-226A is a diagnostic tool for deep cycle battery and starting battery, which can satisfy the loading capacity of deep cycle battery and cranking ability test of starting battery, also provided internal resistance parameters while testing as well. The tester is featured by excellent design, convenient operation, accurate reading and complete functions. 4-wire Kelvin test connection method is designed to complete a series of complicated data collection and calculation. In addtion, overload protection, reversed-polarity connection protection, load test time protection and temperature protection make the operation more security and convenience. Don't worry about burning and destruction, just test it !