The Victron Quattro 48/8000/110-100/100 is an 8000VA inverter charger built around a 48V battery bank, aimed at professional installers working on off-grid, backup and hybrid power installations across residential, commercial and marine applications. It accepts two independent AC inputs, so both shore power and a generator can be connected to the same unit.

Victron Quattro dual AC input and charging

• Inverter output, 8000VA continuous at 230V AC, from a 48V DC battery input.
• Dual AC input, mains grid and generator can be connected at the same time, with automatic transfer switching between them.
• Battery charger, 110A built-in charger with an adaptive algorithm that adjusts to battery condition and type.
• Two AC outputs, AC-Out-1 stays live during a mains failure; AC-Out-2 disconnects when running on inverter power, shedding non-essential loads automatically.
• VE.Bus communication, enables parallel and three-phase configuration with multiple Quattro units, plus integration with Victron GX devices and Venus OS.
• Battery compatibility, works with lead-acid (flooded, gel, AGM) and lithium batteries, with configurable charge profiles.

How the Quattro differs from a MultiPlus

Where a MultiPlus manages a single AC source, the Quattro manages two independently, switching between them based on availability and priority. A generator wired as a secondary source is engaged only when mains power is absent, with no manual intervention or external changeover switch needed. The 110A charger recharges a large 48V battery bank at a meaningful rate from either AC source. PowerAssist draws any load-spike shortfall from the battery rather than risking an overloaded generator breaker, so a smaller generator can be used safely.

Applications

• Off-grid residential and commercial installations needing generator backup.
• Marine and yacht systems managing shore power and generator automatically.
• Backup power systems using AC-Out-2 load shedding to protect essential circuits during an outage.
• Scalable three-phase or parallel systems built from multiple Quattro units via VE.Bus.
• ESS installations integrated with a Victron GX device for grid-tied battery storage and self-consumption.