Recommended for START/STOP batteries and is also compatible with lead, gel, calcium, AGM and EFB battery types. Keeps batteries in a good condition without the risk of them overcharging. One button operation. Large backlit digital display for easy use and reverse polarity and short-circuit protection for safety. Connect and be confident that there won't be any over charging as a result of using the smart charger, as it adjusts automatically to long-term maintenance mode when the vehicle's battery is full.