Supplied in steel case with carrying handle, these professional chargers feature plenty of ventilation to maintain low transformer temperatures. A large ammeter displays rate of charge and a dash-mounted fuse provides polarity protection in the event that clips are connected incorrectly. Rocker switches control variable output to the battery to maintain peak condition. SuperCharge40/1 offers electronic control and is suitable for regular and low maintenance batteries. Supplied with 1400mm length output cables with heavy-duty crocodile clips and are fitted with ASTA approved non-rewirable three pin safety plug.