We recommend the smallest unit whose continuous rating covers everything you tick running at once. Victron rates output at 77°F and again at 104°F. When your load is close to the limit, we say so and show the next size up, so you can decide based on how long those loads run and how hot the space gets.

• Sizes and weights for Victron units come from Victron datasheets. Older units use manufacturer or dealer specs.
• The fit check compares box dimensions only. Leave room for cable bends, airflow and service access, and measure before you buy.
• Wattages for appliances are typical figures. Check the label on yours if you're close to a size limit.
• We pick a unit we have on the shelf when one fits. Special-order units come from Victron in about 5 business days, and we show one when it's the right size or the only fit.
• We only recommend a Quattro when no MultiPlus is big enough. Its second AC input lets shore and generator both connect, but most boats already have a selector switch that does that job.
• Prices and stock are from onboardmarinegoods.com and may change. The product page is always current.