Victron help, all in one place
Free guides and tools for planning, sizing and setting up a Victron system on your boat, from the team that installs them in Marathon. Pick where you are in the project, or just call us.
Choose your equipment
Figure out what your boat needs before you buy.
Replacing a Magnum, Xantrex, ProMariner or AIMS unit, or starting fresh? Answer a few questions and we'll match you to the MultiPlus we'd install ourselves, plus the parts to finish the job.
Find my inverter → Comparison Victron Inverter LineupEvery Victron inverter and inverter/charger for your battery voltage, with real continuous ratings, sizes and weights side by side.
Compare inverters → Calculator MPPT Sizing CalculatorWhich Victron solar charge controller do you need? Enter the numbers from your solar panel label and we check cold-weather voltage, current and more.
Size my MPPT → Guide Do I Need a Cerbo or GX Device?When a Cerbo GX is worth it, when you can skip it, how it works with Starlink, and an example wiring diagram of a typical boat system.
Read the guide →Set up and program
Get the settings right once it's installed.
Pick your MultiPlus, MultiPlus-II or Quattro and what's connected to it. We'll show the exact way to program it and flag anything that method can't do.
Find my setup path → How-to Program a BMV-712 for Epoch LithiumStep-by-step settings so your Victron BMV-712 Smart shows an accurate state of charge with 12V Epoch lithium batteries.
See the settings →Talk to someone who installs these.
Tell us what's on your boat and what you want it to do. We'll help you pick the right parts and get them set up. Call, text or WhatsApp, Monday to Saturday, 8 to 5 Eastern.
These guides are general planning help, not installation drawings. Always check the current Victron manual for your exact product.