Dual Input Charger for On-the-Go Power: This in-vehicle DC battery charger keeps your secondary battery fully charged while driving. Dual inputs let you charge from your vehicle alternator and solar panels at once for reliable off-grid energy Solar Ready with MPPT Efficiency: Harness clean energy wherever you travel. Built-in Maximum Power Point Tracking (MPPT) optimizes solar output and Green Power Priority selects solar first, reducing alternator load and maximizing charging efficiency Multi-Stage Charging for Any Battery: Portable and compatible with AGM, GEL, standard lead acid, calcium, and LiFePO4 lithium batteries. The intelligent charging profile delivers efficient power for battery banks 200AH and up in most common setups Built Tough: Engineered for overlanding, RVing, and off-road use. The dual input battery charger withstands deep water crossings, extreme heat up to 176 F, dust, and vibration. Fully sealed electronics deliver reliability in every environment Confidence for The Long Haul: Designed and tested in the Australian Outback, REDARC automotive products are trusted for over 45 years. This unit is backed by a 2-year limited warranty and global support network Take control of your power with the REDARC Dual Input 40A In-Vehicle DC Battery Charger, the ultimate off-grid charging solution for vehicles running 12V or 24V systems. This advanced DC-DC charger delivers a full, reliable charge to your auxiliary or house batteries while you’re on the move, ensuring your electronics, fridges, lights, and accessories do not run out of power. Built with dual charging capability, this charger draws power from both your car alternator and solar panels simultaneously. The integrated MPPT solar regulator extracts maximum efficiency from solar input, while Green Power Priority gives solar energy precedence, reducing strain on your vehicle’s electrical system. Perfect for adventurers, RV owners, camper van travelers, and worksite fleets, this solar-ready 12V charger supports lithium, AGM, GEL, standard lead acid, and calcium batteries. Its multi-stage charging algorithm ensures optimal performance and battery longevity across every application. Designed to thrive in extreme environments, the charger features fully sealed, potted electronics that resist water, dust, and temperatures up to 176 F. Whether you’re crossing deserts, camping off-grid, or managing power for critical equipment, REDARC’s 40A DC-DC charger delivers dependable, efficient energy wherever the road takes you. REDARC is more than in-vehicle battery chargers. We build a complete ecosystem of off-grid power charging solutions, including car power inverters, battery chargers, battery management systems, solar panels, vehicle trailer brake controller solutions, and auto accessories—all trusted by adventurers worldwide. Power your journey with The Power of REDARC: Confidence for The Long Haul.