Plan your van’s electrical system without the guesswork.
OhMyVan turns your daily loads into a complete 12 V or 24 V system: battery bank, solar array, MPPT controller, inverter, DC-DC charger, cable size, voltage drop, main and branch fuses — with the math shown for every number.
Loads → Wh/dayDC and AC kept separate, with presets for real gear.
Battery & solarLiFePO4 or AGM, autonomy, local peak sun hours.
Wire & fusesVoltage drop and ampacity, main fuse at the battery, branch fuses at the busbar.
Gear listSearch links for the parts, built from your own numbers.
Built to explain itself
Every result has a “How we calculated this” panel with the formula, the inputs and the assumptions. Warnings are written in plain English.
OhMyVan is a planning aid. It is not a substitute for a qualified electrician or an ABYC inspection. Verify every wire, fuse and battery choice before installation.
As an Amazon Associate, OhMyVan earns from qualifying purchases. See the disclosure.