Latest Car Battery Tester: KINGBOLEN BM550 battery tester can test 6V,12V,24V batteries, including conventional flooded batteries, AGM flat batteries, AGM spiral batteries, EFB batteries, and GEL batteries. Comprehensively analyze the battery's health status to help you understand the battery's status in advance before it runs out. KINGBOLEN BM550 24V/12V/6V Car Battery Tester is able to effectively analyze and read important car data such as voltage, internal resistance, cold cranking amp and AH capacity, battery health and charge status. It provides accurate results, calculates the cold cranking capability of the battery and the aging extent, allowing for a quicker, more precise car repairing.