Victron Quattro Inverter/Charger 48V DC - 5000VA - Dual 100A 120VAC Inputs - Auto Transfer Switch - 70AMP Charger

The Victron Quattro Inverter/Charger 48V DC – 5000VA represents the gold standard for serious cruisers and liveaboards who demand reliable, uninterrupted power at sea. Built for vessels that operate far from shore power, this dual-input inverter/charger seamlessly transitions between onboard battery banks, shore power, and generator sources—critical capability when you're anchored for weeks or running extended offshore passages. Whether you're powering air conditioning, refrigeration, navigation electronics, or galley equipment, the Quattro 48/5000 delivers consistent 5000VA output while simultaneously charging your battery bank at up to 70 amps, ensuring you never sacrifice performance for battery replenishment.

This inverter/charger accepts dual 120VAC inputs with an integrated automatic transfer switch that intelligently selects the strongest available source—whether shore power or a backup generator—without manual intervention or power interruption. The 48-volt DC architecture supplies the high-capacity battery banks typical of modern cruising sailboats and trawler yachts, where traditional 12V or 24V systems cannot sustain multi-day autonomous operation. Victron's proven engineering ensures extreme reliability in corrosive marine environments, with robust internal protection against voltage spikes, reverse polarity, and overload conditions that would disable lesser equipment. At 78.9 lbs and compact dimensions (17 x 14 x 21 inches), the unit fits into engine room or electrical locker spaces aboard mid-to-large cruising vessels without dominating precious real estate.

Cruisers upgrading from older single-input chargers or those building custom electrical systems will find the Quattro's dual-input flexibility indispensable when operating between marinas, anchorages, and backup generation. Professional marine electricians and experienced DIY installers specify Victron Quattro units for superyachts, expedition vessels, and charter fleets where downtime equals lost revenue and guest satisfaction directly impacts reputation. The automatic transfer switch eliminates the need for manual switching between power sources, reducing operator error and ensuring seamless transitions during dock departures or generator activation. Proper battery bank sizing (typically 400–600 amp-hours of lithium or lead-acid capacity) maximizes the charger's 70-amp capability and enables the full 5000VA inversion capacity under real-world cruising loads.