This must-have battery charger will save you from the fuss of aligning cars to charge your car battery! It can charge your car for up to 10 hours! It comes with protection for reverse polarity, short circuit and overload. It is compatible with petrol engines up to 4000cc and Diesel engines up to 3500cc. Keep track of how much charge is in your battery with the scale at the front. Three options are provided for trickle charge (6 and 12 volts) and 12 volt fast charge. When the charge is complete, it will automatically switch to float charge to keep your battery topped up- don’t worry about any damage being caused due to this as there is overload protection.