The new-style MultiPlus is a powerful true sine wave inverter, a sophisticated battery charger with adaptive charge technology, and a high-speed AC transfer switch, all in a single compact enclosure. It replaces the earlier MultiPlus Compact range with the same proven full-bridge plus toroidal transformer topology, short-circuit proof and protected against overheating from overload or high ambient temperature.
PowerControl lets you set a maximum generator, shore side or grid current. The MultiPlus accounts for other AC loads and uses whatever capacity is left over for charging, preventing the source from being overloaded.
PowerAssist boosts limited shore or generator power. When peak demand is needed only briefly, the MultiPlus tops up insufficient supply with power drawn from the battery, then uses spare capacity to recharge once the load drops. This also delivers the high start-up power needed for inrush loads such as power tools or LED and halogen drivers.
Search Mode cuts no-load power consumption by around 70%, switching the inverter off during idle periods and briefly on every two seconds to check for load.
The programmable relay defaults to alarm mode, de-energising on a pre-alarm condition such as the inverter running hot, excessive ripple on the input, or a low battery.
Specification

Battery voltage: 24V nominal
Continuous power (25°C): 2,000 VA / 1,600 W
Continuous power (40°C): 1,400 W, (65°C): 1,000 W
Peak power: 3,500 W
Maximum efficiency: 94%
Maximum battery charge current: 50A, adaptive 4-stage charge algorithm
Charge voltages: absorption 28.8V, float 27.6V, storage 26.4V
AC transfer switch rating: 32A
DC input voltage range: 19-33V
AC output: 230V, 50Hz
AC input voltage range: 187-265V, frequency range 45-65Hz
Zero load power: 9W (3W in Search Mode)
Communication port: VE.Bus
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: IP21
Dimensions: 506 x 236 x 147 mm
Weight: 15.5 kg
Material: steel, blue (RAL 5012)
Compliance: EN-IEC 60335-1, EN-IEC 60335-2-29, EN-IEC 62109-1
Warranty: 5 years standard (extendable to 10 years); lead-acid batteries 2 years, lithium batteries 3 years

Supports parallel operation (up to 6 units) and three-phase configurations for scaling power output on larger off-grid or vehicle electrical systems. Recommended battery capacity: 200-500Ah, with a 200A DC fuse and 35mm² cable for runs up to 5m (70mm² for 5-10m).