The REDARC BCDC1250D is the ultimate 12V, 50A in-vehicle battery charger designed specifically for auxiliary batteries. Whether you're on the road or parked with solar panels, this charger ensures your battery remains charged and ready to go. Utilizing a multi-stage DC-DC charging system, it optimizes charging levels to suit your auxiliary battery's needs, making it perfect for a variety of applications. This charger features an innovative SoftStart stage to accommodate demanding power requirements. With its built-in Maximum Power Point Tracking (MPPT) solar regulator, the BCDC1250D can charge your battery from both solar energy and your vehicle's alternator simultaneously. It prioritizes solar charging to reduce the load on the alternator, ensuring efficient energy use. Compatible with standard and smart alternators as well as various battery types, including AGM, Gel, and Lithium, this unit is ideal for battery banks over 200AH. Designed for extreme conditions, it is fully sealed against water and dust, making it perfect for off-road adventures. Made in Australia, the REDARC BCDC1250D has been rigorously tested in harsh environments, ensuring its durability and reliability. With over 40 years of experience, REDARC delivers quality products engineered to withstand the test of time and nature's toughest challenges. <b>Features:</b> * Multi-stage DC-DC charging for optimal battery performance: Multi-stage DC-DC charging for optimal battery performance * SoftStart feature for handling demanding applications: SoftStart feature for handling demanding applications * Maximum Power Point Tracking (MPPT) solar regulator for dual charging: Maximum Power Point Tracking (MPPT) solar regulator for dual charging * Green Power Priority selects solar charging to reduce alternator load: Green Power Priority selects solar charging to reduce alternator load * Fully sealed design to protect against water and dust infiltration: Fully sealed design to protect against water and dust infiltration * Compatible with various battery types including AGM, Gel, and Lithium: Compatible with various battery types including AGM, Gel, and Lithium * Tested for extreme conditions, including deep water crossings and high heat: Tested for extreme conditions, including deep water crossings and high heat