Off-grid your way.
Start with Custom Lithium.
Work out how much battery your caravan needs to run the things you love.
Air-con, coffee, induction or just the fridge and lights: tell us what you run and how long you stay out, and we’ll match the right battery.
Four questions. Your results show real products and prices.
Big loads need big power
Air-con changes everything
A caravan air-conditioner can draw around 100 amps while it runs. A few hours a day needs a serious battery.
Solar helps, but not at night
Around 200W of solar can put back roughly 60 to 70Ah on a good summer day. Overnight, it’s all on your battery.
Built for caravans
Our Caravan & RV batteries come in 400Ah, 550Ah and 620Ah, built to handle the big loads.
Full by dark.
Solar tops the battery up through the day, so it's ready when the lights, fridge and coffee machine come on.
Size your battery
Your match
A starting point based on typical power draws, not a quote. Real use depends on your appliances, climate and charging. Our team will confirm before you buy.
Caravan questions
Can a lithium battery really run caravan air-con?
Yes, with enough capacity and a suitable inverter. Air-con is the biggest load in most vans, so it usually decides the battery size.
Will it fit in my van?
Our Ultra Slim range is designed for tight spaces like under beds and seats. Tell us your measurements and we’ll confirm.
Who can install it?
Most auto electricians can, and we work with 500+ installers and partners across Australia. Call us for your nearest.
Talk to the people who build it.
Installation. Adding a dual battery or auxiliary power system is a modification to your vehicle, and most installs involve some changes to wiring, trim or mounting. We recommend having a qualified auto electrician install your system.