How do I design an overland power system?

Start with your vehicle, battery chemistry, battery capacity, charging sources, and daily equipment loads. The OverlandWatts Rig Builder estimates runtime, recharge time, cost, weight, warnings, and a complete system diagram.

What size battery do I need for truck camping?

Battery size depends on daily watt-hours, days off-grid, battery chemistry, and charging sources. The Rig Builder updates usable watt-hours and runtime as you add fridges, Starlink, heaters, lights, laptops, and other loads.

Interactive Rig Builder

Design a professional overland power system visually.

Configure your vehicle, battery bank, charging sources, and real camp loads. The build score, runtime, cost, solar recovery, warnings, diagram, and shopping plan update live.

Start building

Configure

Build specs

Vehicle

Vehicle platform

Battery bank

Chemistry

Battery count Capacity each

Charging

Solar watts DC-DC charger

Equipment loads

System diagram

Tacoma Basecamp System

Vehicle Alternator

DC-DC Charger 30A

Battery Bank 200Ah

Bus Bars

Fuse Block

Loads 6 circuits

Build A

Current build

Build B

Expedition upgrade

Battery bank Bus bars Fuse block DC-DC charger

This mode gives a simplified depth-style component view of the selected battery bank, bus bars, fuse block, and charger layout.

Community mode

Clone a popular build.

Start with a proven mission profile, then tune the system around your real gear.