Van electrical system


July 1st 2026

Inside this newsletter👉

Good morning from a cold wet rainy Adelaide!

It's the start of the next financial year, and until I started my own business I never really took any notice of it. Now the paperwork seems simply crazy! However, something that doesn't need to be overcomplicated is your vans electrical system. Here, Tim breaks down all the info you need for the complete system:

Your electrical system.

It sounds complicated, but once you understand the basics, it all makes sense.

240V vs 12V — here's the simple version

Every caravan has two electrical systems running side by side.

The 240V system works just like your home. Plug in your kettle, coffee machine, laptop, Starlink — anything you'd normally plug into a wall. You get this power from a caravan park hookup or a generator when you're off-grid.

The 12V system runs from your on-board batteries. It powers your lights, water pump, fridge, diesel heater, and USB outlets. How long it lasts depends on the size and number of batteries you have — measured in amp hours (Ah). The higher the number, the longer you've got

We get all of our supplies from Caravan RV Camping, they've got a great range, quick delivery and awesome prices

How do the batteries recharge?

Three ways:

  • Solar panels — fixed to the roof, charging automatically whenever the sun's out. Most of the time you don't need to do anything.
  • Your tow vehicle — as soon as you connect the plug and start the car, it's charging. Just don't leave the caravan connected for too long with the engine off or you'll flatten your car battery.
  • 240V charger — once you're plugged into mains power, your batteries start charging automatically.

Some vans have a smart management system that handles all of this and shows you exactly what's happening. Others are more manual. Worth knowing which one yours is.

When the two systems connect

Some caravans have an inverter — this converts your 12V battery power into 240V, so you can run 240V devices even when you're off-grid with no generator.

It's a handy bit of gear, but be aware: if your inverter is connected to all the GPOs throughout the van, it's easy to accidentally run too many devices at once and drain your batteries fast.

Take the time to understand what's set up in your van. Find out what turns on automatically, what's permanently plugged in, and how much draw your devices are putting on the system.

If you're interested, here are a few articles to have a read:

Your Caravan Electrical System Simply Explained​
Read More
​

If you still find you need more power in your van, have a look at these generators with My Generator. We've used our generator many times, especially when we're off grid for extended periods of time in cloudy weather!

The other option is a portable battery pack. Bluetti has one of the best ranges we've seen. It's for that peace of mind for backup power - or, like I (Margie) does, work on my computer away from the van (and kids!). My laptop has terrible power consumption, so my Bluetti power station helps give me an hour or 2 peace! (PS it's up to 40% off this week!)

Have a lovely day

Tim & Margie

PS Tim has created a great maintenance schedule guide checklist - from pre and post trip checks, 6 monthly checks and professional checks to help find any possible problem while you're in your driveway (and near a Supercheap or something!) and not in the middle of nowhere! Check it out here ​

PPS If you're thinking about the budget planner, I've been adding some more tools, like an interactive tool where you enter your savings goal, then it produces a page to print for the front of your fridge! (If you've already bought the planner, check out your login page, you'll find the new tools there)

​Margie and Tim Travel and Adventure​
​Unsubscribe Preferences​

Please add me to the Caravan | Destinations community


Some of the links inside this email may contain affiliate links. This means we may earn a small commission if you purchase through these links. It is of no cost to you, and often we get to offer you great discounts. By purchasing through these links, you help to keep these emails free for everyone. Thank you for your support.