The REDARC battery charger is a 12V 25A In-vehicle DC to DC battery charger. It features the next generation in REDARC In-vehicle charging technology, charging from Solar and DC inputs simultaneously.
“Great DC-DC charger for Lithium battery, keeps high rate charge till battery full. Had the earlier version in previous 4x4 for 8 years & never missed a beat. Might seem slightly expensive but will last for many carefree years keeping your dual batteries charged.”