VanSpark 12V Pro
VanSpark guides
Campervan electrics, explained properly.
Every guide ends with a live, pre-configured calculator so you can check the numbers against your own build.
Campervan Cable Size Chart: What mm² Do You Actually Need?
The complete 12V campervan cable size chart. Worked out on the full round trip — positive out and negative back — keeping voltage drop under 3%.
What Size Leisure Battery Do You Need for a Campervan?
Work out exactly what size leisure battery your campervan needs: daily watt-hours to amp-hours, depth of discharge, autonomy, and LiFePO4 vs AGM.
What Size Inverter Do You Need for a Campervan?
How to size a campervan inverter: add your 240V loads, apply the surge margin, then cable and fuse the DC side properly — the part most guides skip.