Suitable for petrol engines from 250cc to 4000cc and diesel engines from 250cc to 3500cc. Suitable for 12V wet lead acid batteries with a capacity between 7Ah - 180Ah. Trickle charge 3 amps RMS (2 amps DC), fast charge 12 amps RMS (8 amps DC). Standard battery charge time 8 to 10 hours, from flat. Reverse polarity protection. Short circuit protection. Thermal overload. Mains on LED indicator. Analogue meter showing the battery charge. Automatically switches to float charge when battery is fully charged (12V fast charge only).