If you've been researching off-grid systems for your motorhome, you'll have come across Victron Energy. It's the brand we use across our package range and it's the one most serious installers recommend. But the product range can be confusing at first glance — SmartSolar, MultiPlus, Cerbo GX, Orion XS... what does it all actually mean?

Here's a plain-English breakdown of how a Victron system fits together.

The solar charge controller: SmartSolar MPPT

The SmartSolar MPPT controller sits between your solar panels and your batteries. Its job is to take the variable voltage coming from the panels and convert it as efficiently as possible into the right charging voltage for your battery bank. MPPT (Maximum Power Point Tracking) means it's constantly optimising to extract the most power possible from the panels regardless of conditions.

Victron SmartSolar controllers connect via Bluetooth to the Victron Connect app, giving you real-time solar data on your phone.

The inverter/charger: MultiPlus-II

The MultiPlus-II is the heart of a serious off-grid system. It does three things: inverts DC battery power to 230V AC for your appliances, charges your batteries from shore power (hookup), and automatically switches between inverter and shore power so you never even notice the changeover.

The MultiPlus-II also supports your engine battery — it can trickle charge the starter battery from shore power, which is a useful bonus.

The DC-DC charger: Orion XS

The Orion XS is Victron's high-output DC-DC charger. It takes power from your vehicle's alternator while you're driving and converts it to the right voltage and current to charge your lithium leisure batteries efficiently. The XS range delivers significantly higher output than the older Orion-Tr Smart, making it particularly effective for shorter drives.

The monitoring hub: Cerbo GX

The Cerbo GX is the brain of the system. It connects to all your Victron components and gives you a single view of everything — solar input, battery state, inverter output, DC-DC charging — either on a wall-mounted Touch GX display or through the Victron VRM portal remotely. From anywhere in the world, you can see exactly what your system is doing.

How it all works together

During the day, solar charges the batteries via the SmartSolar. While driving, the Orion XS tops them up from the alternator. At night or in poor weather, the MultiPlus draws on battery reserves through the inverter. When hookup is available, the MultiPlus charges the batteries quickly and efficiently. The Cerbo GX ties it all together and keeps you informed.

It's an elegant system once you understand it — and one that gives you complete confidence in your power wherever you travel.