The MultiPlus-II adds PV inverter support to the proven MultiPlus platform, working seamlessly alongside AC-coupled solar without a separate inverter, whether feeding excess solar into the battery or exporting to the grid. It combines a true sine wave inverter, an adaptive battery charger, and a high-speed AC transfer switch in a single enclosure, and can be paired with MPPT solar chargers or grid-tie PV inverters for a full Energy Storage System.
Uninterrupted AC power (UPS function): if grid, shore or generator power is lost, the inverter takes over the connected loads in under 20 milliseconds, fast enough that computers and other electronics keep running without disruption.
Remote monitoring and control: monitor and control the system locally or remotely from anywhere via the free VRM app and VRM portal, from a phone, tablet, laptop, or PC, with a Cerbo GX or Venus GX for full control including automatic generator start.
Specification

Battery voltage: 12V nominal
Continuous power (25°C): 3,000 VA / 2,400 W
Continuous power (40°C): 2,200 W, (65°C): 1,700 W
Peak power: 5,500 W
Maximum efficiency: 93%
Maximum battery charge current: 120A, adaptive 4-stage charge algorithm
Charge voltages: absorption 14.4V, float 13.8V, storage 13.2V
AC transfer switch rating: 32A, max AC input current 32A
DC input voltage range: 9.5-17V
AC output: 230V, 50Hz
AC input voltage range: 187-265V, frequency range 45-65Hz
Zero load power: 13W (9W AES, 3W in Search Mode)
Communication port: VE.Bus
Number of AC outputs: 2, plus auxiliary output
Protections: output short-circuit, overload, high/low battery voltage, over temperature, AC voltage on inverter output, excessive DC ripple
Operating temperature: -40°C to 65°C, fan-assisted cooling
Protection category: IP22
Dimensions: 546 x 275 x 147 mm
Weight: 19 kg
Material: steel, blue (RAL 5012)
Compliance: EN-IEC 60335-1, EN-IEC 60335-2-29, EN-IEC 62109-1, EN-IEC 62109-2
Warranty: 5 years standard (extendable to 10 years); lead-acid batteries 2 years, lithium batteries 3 years

Recommended DC fuse: 400A. Use two 50mm² cables each way (positive and negative) for runs up to 5m, or two 70mm² cables each way for 5-10m; battery connection is via M8 bolts.