CARTMAN 12V Car Battery & Alternator Tester - Test Battery Condition & Alternator Charging (LED Indication)

*LED display indicates condition
*Check before Charge: Battery is alive, "OK" to be charged.
*Alternator check : accelerate your engine to 2000 rpm when the green light is lit ,charging circuit is ok.
*Battery check: indicate the percentage charging in the battery.
*Cranking check : red light indicates voltage from Alternator over-high.