List loads before battery capacity
Begin with refrigeration, lighting, heating controls, communications, cooking, water equipment, and the devices you expect to charge. Record how long each one runs during a normal day instead of sizing from a single peak number.
Match charging to the route
Frequent driving, long stationary stays, shade, season, and access to shore power change how the battery bank is replenished. The best charging mix follows the way the van will actually move and camp.
Keep a working reserve
A useful plan leaves capacity for poor weather, a changed itinerary, and the inefficiencies present in every electrical system. Patrol Vans can review loads, charging sources, installation scope, and current equipment together.