Installing Caravan Lithium Batteries - Wiring, Fusing and Mounting

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.

Explore caravan lithium batteries and accessories

Why Choose VanDIY?

VanDIY is a Queensland-based supplier of quality caravan parts and accessories. We’ve been supporting Australian travellers and DIY builders since 2006, offering proven products and real local support.

  • With warehouses in Gympie, Brisbane and Melbourne – we dispatch Australia-wide
  • Authorised SJRV distributor and product partner
  • 3-year warranty on major components
  • All stock tested and backed before it reaches our shelves
  • Fast, transparent freight and reliable customer service

Frequently Asked Questions

What caravan parts do you stock?


We offer a wide range of caravan parts and accessories including windows, fridge vents, roof fans, lithium batteries, 12V fridges, hot water systems, toilets, and washing machines – all designed for Australian conditions.

Where do you ship from?


We have 3 warehouse options - Gympie, Brisbane and Melbourne - Providing an item is in stock we will ship ex Gympie or Brisbane. If not in stock here, we'll ship ex Melbourne via the SJRV warehouse with fast and reliable freight options available Australia-wide.

Do you offer pickup?

Yes, we offer pickup from our Brisbane warehouse. If the item is out of stock in Brisbane, we'll ship it up ex Melbourne to the warehouse and notify you when ready.

Do you sell to trade and DIY customers?


Yes – VanDIY supplies both trade customers and DIY builders. Contact us for wholesale or volume pricing if you’re building or fitting multiple vans.

Shop Caravan Parts & Accessories Australia-Wide


Whether you’re building, repairing or upgrading your caravan, VanDIY makes it easy to find the right parts for your project. We stock a complete range of caravan parts and accessories including windows, vents, fans, fridges, lithium batteries and more – all tested for durability in Australian conditions. With warehouses in Gympie, Brisbane and Melbourne, we ship fast across Australia, offering real local support and advice. Browse online today or contact our team for help choosing the right gear for your build.