SMPS based Constant Voltage 4 Amp Battery Charger is available with current meter and fuse. The Battery Charger is fully protected against out put lead short circuit and reverse polarity. The Battery Charger is also protected against deep discharge battery. SMPS based Constant Voltage 4 Amp Battery Charger comes in well designed electronic circuit which control the out put volt and current to protect battery to over charge and improve battery life.