: Always charge in a well-ventilated area to allow hydrogen gas to dissipate.
| Stage | Name | Action | |-------|---------------|--------------------------------------------------------------| | 1 | Desulfation | Pulse mode for sulfated batteries (if voltage < 10.5V at 12V)| | 2 | Soft start | Low current to revive deeply discharged batteries | | 3 | Bulk charge | 6A constant current until ~80% capacity | | 4 | Absorption | Constant voltage, current tapers | | 5 | Analysis | Pauses to check voltage retention | | 6 | Float / Maintain | 2A trickle / float (13.2–13.8V for 12V) | autocraft battery charger ac-60cr manual