Here you can find DC to DC chargers for charging auxiliary batteries. As new vehicles are arriving with charging systems that are not suitable for secondary batteries, a DC-DC battery charger is now essential more than ever. Especially when it comes to lithium batteries, using a quality DC to DC charger to charge lithium batteries, is even more important. Electro Parts have a range of DC to DC chargers that will overcome low voltages from modern charging vehicle systems. Our DC to DC charger with solar MPPT controller is by far the most featured unit in the range.