【Fast Charging】 Provides a maximum engine starting current of 150 A, and a maximum charging current of 30A. Two charging modes can be selected: 12V (8A, 15A, 30A), 24V (4A, 7.5A, 15A). Compatible with WET/GEL/AGM/WET/MF/EFB/deep cycle battery automotive and marine batteries, etc.