Renogy 40A DC-DC On-Board Battery Charger with MPPT
The best of both worlds for van builders and overlanders — a 40A DC-DC charger that handles alternator charging AND includes a built-in MPPT solar charge controller. One unit manages both your driving charge and your solar input, simplifying your electrical system without sacrificing capability.
Protection: Over-voltage, over-current, reverse polarity, short circuit, thermal
Operating Temp: -4°F to 131°F
Why It's the Right Choice for Full-Time Builds
At 40A from the alternator plus solar input, this unit can put serious power into your battery bank on driving days — and keep charging from panels when you're parked. The built-in MPPT controller means you don't need a separate charge controller for smaller solar arrays, saving money and wiring complexity.
Not sure what size you need? Use our free Power Station Size Calculator to get a personalized recommendation in under 2 minutes.
