12V camper van build

How much battery and solar does your van need?

Check off what you'll run, adjust the hours, and get a battery, solar, and inverter size with a rough parts cost. The list starts with a typical weekend setup.

What you'll power

Your trips

Days without sun or hookup: 2 Cloudy-day backup. Two is a common choice.

Where and when you travel Peak sun hours per day.

Battery type Lithium costs more up front but weighs about a third as much.

Your system

Daily energy use

0watt-hours per day

One day of useBackup days

Battery bank–

Solar panels–

Inverter–

MPPT controller–

Estimated parts cost
Before wiring labor. Prices vary by brand. –

Parts for this build

As an Amazon Associate I earn from qualifying purchases. Some links on this page are affiliate links, which pay a small commission at no extra cost to you. Sizes are estimates for planning; have a qualified installer check your final wiring and fusing.