Charging a Caravan Lithium Battery - DC-DC, Solar and Mains

Charging a Caravan Lithium Battery - DC-DC, Solar and Mains

Intro
Correct charging is the key to reliable LiFePO4 performance. Use matched chargers and cables, and your system will recharge quickly and safely.

DC-DC Charging From Your Tow Vehicle

  • Why DC-DC - stabilises alternator output and provides a proper lithium profile.
  • Location - mount close to the caravan battery to reduce voltage drop.
  • Cabling - size cables for the charger’s full current over the full run.


Solar With MPPT

  • MPPT regulator tuned for lithium improves harvest.
  • Fixed roof + portable - combine for shade resilience at camp.
  • Wiring - keep panel-to-regulator and regulator-to-battery runs appropriately sized.


240V Mains Charger

  • Use a charger with a lithium mode and correct current for your battery bank.
  • Follow the manufacturer’s instructions and relevant electrical standards.


General Tips

  • Use correct fusing near the power source and at distribution points.
  • Keep cable runs short and terminations clean and tight.
  • Confirm charger settings after any firmware updates or resets.


Bottom line
Match DC-DC, MPPT and mains chargers to LiFePO4 settings, size cables correctly, and you will recharge quickly on and off the road.

See caravan lithium batteries compatible with DC-DC and MPPT charging

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.