POWER
THE
DREAM
A campervan's electrical system is its heart. From 12V DC circuits to 230V AC mains, we break down the logic of safe, reliable, off-grid power.
Storage
Choosing between Lead-Acid, AGM, and Lithium. Why LiFePO4 is the only choice for modern builds.
Generation
Solar, Alternator (DC-DC), and Hookup. Managing your energy harvest for true off-grid freedom.
Distribution
Inverters, fuse boxes, and the essential safety math behind cable sizing and protection.
The 12V vs 230V Debate
In a UK campervan, you are managing two distinct systems. The **12V DC** system runs your lights, fridge, and pumps directly from your leisure batteries. The **230V AC** system provides domestic-style power sockets, either from an external hookup or via an **Inverter**.
Solar: The Harvest
MPPT vs PWM
Always choose an **MPPT controller** (like the Victron SmartSolar range). They are up to 30% more efficient than PWM, particularly in the overcast conditions common in the UK.
Sizing Your Array
For a year-round UK van, we recommend at least **200W - 300W** of solar to keep your fridge running during the shorter winter days.
Safety & Protection
Fuses are for Wires, Not Devices
A fuse protects the cable from overheating and starting a fire. Always fuse as close to the battery as possible.
The Voltage Drop Trap
Thin 12V wires cause voltage to drop over distance. Always size up your cables using a technical calculator.
Deep dive resources
SPEC YOUR
SYSTEM NOW
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