DUOYI 12V Car Battery System Tester Capacity Maximum Electronic load Battery Cranking Charge Test Digital Diagnostic Tool DY2015

Precise circuit and strong digital processing unit make it complete collection of a series of complicated data and figure out every test data, which availably by  4-wire Kelvin test connection.  Besides it strengthens input protection inside , in order to prevent such situations as polar reversal connection, over-high voltage input, poor contact of the test clamps and so on. That makes sure safer and more convenient when testing.