【Multi-Input Efficiency Charging】 The Renogy DC to DC Charger with unique dual charging options. This multi-stage, multi-input battery charger can charge the house battery from a starter battery linked to the car alternator or by connecting solar panels directly to the unit. Both ways can be charged at the same time to minimize charging time. With up to 99% MPPT tracking efficiency and 94% convert efficiency, the smart charger can fully charge a 1kWh battery within 2 hrs with solar energy.
