Victron Energy

Victron Energy is a Dutch marine and off-grid power specialist, and the brand we recommend for boat electrical systems – inverters, battery chargers, battery monitors and DC-DC converters built to run reliably on a boat’s 12V/24V system.

An inverter/charger combines two jobs in one unit: it inverts battery power to run mains appliances aboard, and charges the battery bank when you’re connected to shore power – worth choosing over separate units if space and simplicity matter more than flexibility. A standalone battery charger suits boats that don’t need an inverter but want reliable, battery-friendly charging from shore power or a generator. A battery monitor tracks state of charge, voltage and current in real time rather than leaving you guessing from voltage alone – genuinely useful once you’re relying on the battery bank for more than engine starting.

Lithium batteries hold more usable capacity for their size and weight and charge faster than AGM, but need a charging system and battery monitor specifically compatible with lithium chemistry – don’t assume an existing AGM-configured system will charge lithium safely without checking compatibility first. AGM remains a solid, lower-cost option for boats with modest power demands.

Frequently asked questions

Do I need an inverter/charger, or a separate charger and inverter?

A combined inverter/charger saves space and wiring complexity for most boats; separate units suit boats needing more flexibility or higher individual capacity in either function.

Is a battery monitor worth adding to my boat?

Yes, if you rely on your battery bank for anything beyond engine starting – it shows real state of charge rather than the rough guide voltage alone gives you.

Can I switch from AGM to lithium batteries without changing anything else?

Not usually – check your charger, inverter/charger and monitor are all rated for lithium chemistry before switching, as an AGM-only charging profile isn’t safe for lithium cells.