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The Renogy IP67 50A DC-DC charger tops up a house battery bank from the vehicle alternator while you drive, and includes an MPPT solar controller so panels feed the same bank. The IP67 rating means it tolerates a harsh, damp install location.
How it helps on the road
Driving days become charging days. A DC-to-DC charger is the piece that turns the alternator into a reliable way to refill the house bank, which matters most in winter and on cloudy stretches when solar alone falls short. Folding solar into the same unit keeps the wiring tidy. This is core wired-system gear — the off-grid power and solar sizing guide explains where it fits, and the high-current install is the kind of work the Tri-Span guide covers handing to a professional.
This is one of the items on our Amazon.ca kit list.