REDARC’s 4 amp SmartCharge by DEFA is a portable AC to DC battery charger that has been designed to automatically charge and maintain most common 12V automotive batteries. The 4A SmartCharge automatically recognises the type of battery it’s connected to, then calculates charging and its status and determines what charging is needed. An in-built display shows the status of charge and battery charge level. Award-winning for its design and user-friendliness, it is also rated to IP65 meaning it can be used in damp and outdoor environments. It is shockproof, spark proof and protected against reverse polarity. With a practical integrated cable storage solution, users can fasten the clamps to the unit when they are not in use which means you no longer have to store the cables in a pile. Features Simple one-button solution and user-friendly display interface Adapts automatically to your battery Battery status monitoring in the display Secured against short circuits and reverse polarity Integrated cable storage solution Temperature-compensated charging cycle The 4A SmartCharge is best suited for use on batteries rated from 4 to 120Ah (Amp hours).