How many solar panels and batteries do you REALLY need — and can your van actually carry them?
Solar Needed (W) = (Daily Wh × 1.2 buffer) ÷ Peak Sun Hours
Battery Needed (Ah) = (Daily Wh × Autonomy Days) ÷ 12V ÷ 0.8 (DoD)
Estimated System Weight = (Solar panels ≈ 0.7 lb/W) + (LiFePO4 battery ≈ 0.5 lb/Ah) + inverter (~15 lb)
💡 Pro Tip: Most van lifers need 400W–600W of solar for full-time living.
Our AI spreadsheet includes solar sizing, battery bank calculator, weight monitor, and wiring diagrams — customized to your exact van and appliance list.
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