Installing Caravan Lithium Batteries - Wiring, Fusing and Mounting

Intro
A tidy install is safer and performs better. Focus on correct cable sizing, fusing near sources, and secure mounting.

Location and Mounting

• Mount securely on a flat surface with appropriate brackets.
• Avoid direct engine bay heat - most caravan installs are inside cabinetry or lockers.
• Allow access to terminals, BMS reset points or display if fitted.

Cable Sizing and Voltage Drop

• Size for maximum expected current and the full cable length (there and back).
• Keep runs short and use quality lugs with proper crimping.
• Route cables to avoid chafe - use conduit and grommets where needed.

Fusing and Isolation

• Fit main fuses as close as practical to the battery positive.
• Fuse branch circuits to suit cable size and device ratings.
• Include an accessible isolator for maintenance and storage.

Charger and Inverter Placement

• Keep chargers close to the battery to reduce voltage drop.
• Provide ventilation around inverters and high-current equipment.

Note
Mains-voltage work must follow relevant regulations. Consult a licensed professional for 240V wiring.

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