KINGBOLEN BM550 100-2000 CCA Battery Analyzer 6V 12V 24V Car Battery Tester. KINGBOLEN BM550 Battery Analyzer 6V 12V 24V Car Battery Tester. It Can Test All 6V 12V 24V 100-2000 CCA Car Batteries 2Ah-220Ah for Cars Trucks SUV ATV Boats Motorcycles, Including Regular Flooded, AGM Flat Plate, AGM Spiral, GEL and EFB Batteries.