FOXWELL BT705 12V 24V Battery Tester 100-2000 CCA Charging System for Cars Heavy Duty Trucks Flooded AGM GEL Battery Analyzer. The latest BT-705 ( 100-2000CCA )Battery Analyzer form Foxwell is dedicatedly developed to test 12V regular flooded, AGM flat plate,AGM spiral and gel batteries and 12V & 24V starting and charging system.It provides a quick,easy and affordable solution for technicians to check battery health and detect faults of starting and charging system.