The HYSC-4000M is a smart 230v battery charger from Hyundai. Designed for charging all types of 6v lead acid and 12v lead acid batteries. These include WET (Flooded), MF (Maintenance-Free), EFB (Enhanced Flooded Battery), GEL and AGM (Absorbed Glass Mat) batteries. This makes the charger ideal for charging battery capacities from 1.2 to 130 amp-hours and maintaining all battery sizes. The HYSC-4000M features a built-in intelligent microprocessor to make charging your battery faster, easier and safer. Safety features of this charger includes spark proof, protection for reverse polarity, short circuit, overheat and overcharge. The auto-memory will also return the charger back to its last selected mode when the charger is restarted. When the battery level indicator bars are flashing, this means that your battery is charging. If they remain solid, this means that you battery is charged.