Simple campervan electrical system builder
Add your devices and the calculator will estimate daily energy usage and suggest a battery + solar array size.
12 V off-grid
Camper / van / bus
Approximate results (must be verified by an electrician)
Step 1 – devices in your camper
Usage (W × h/day)
No devices yet. Add something above.
Tip: you can take the power from the rating label (W) or from the power supply (e.g. 12V × 5A = 60W).
Step 2 – system parameters
Battery + PV
How many days without sun / charging.
Result – system overview
Approximate values
Your system – estimated size
Waiting for input…
Daily energy usage
0 Wh / day
Add devices to run the calculation.
Suggested battery capacity
–
Depends on battery type and autonomy.
Estimated solar array size
–
Assumes approx. 3.5 h of effective sun.
Comment
No data yet.
Results are indicative only. Always have your system checked by a qualified electrician / engineer.