Description

MultiPlus-II 48/5000/70-50 230V GX — Inverter/Charger with Built-in Smart Monitoring

A powerhouse for serious off-grid, hybrid and backup systems. The MultiPlus-II GX combines Victron’s proven 5 kVA pure-sine inverter/charger with an integrated GX device (Venus OS), so you get advanced control, data logging and remote management without needing a separate Cerbo GX.

Why installers and power users choose it

• All-in-one, done right: 5 kVA inverter + 70 A charger + 50 A transfer switch + built-in GX.

• UPS-grade continuity: Sub-20 ms transfer keeps sensitive loads (IT/AV, fridges, pumps) online.

• PowerAssist™ boost: Supplements weak grid or generator to handle start-up surges.

• Two AC outputs: Prioritise essentials; shed non-critical loads automatically.

• Smart energy system ready: Works with PV inverters and Victron MPPTs for self-consumption and backup (ESS).

• Remote everything: VRM Portal access out of the box—live data, alerts, firmware updates.

• Open, modular ecosystem: VE.Bus, VE.Direct, VE.Can, USB/Ethernet enable flexible system growth.

Key features

• 5 kVA / 48 V pure sine wave inverter (high surge capability for motors & compressors)

• 70 A adaptive battery charger with selectable profiles (LiFePO4, AGM, GEL, custom)

• 50 A automatic transfer switch (-50 variant)

• Integrated GX computer (Venus OS) for:

  • Live dashboards (local & remote)

  • Data logging to SD/VRM

  • Generator auto-start logic

  • DVCC battery management (with compatible BMS)

• VictronConnect app via Bluetooth (through attached Victron devices) and full VRM cloud control

• Programmable relays & digital inputs for automation (genset, contactors, load control)

• Parallel & three-phase capable (with additional units)

Ideal for

• Whole-home backup with essential/non-essential circuits

• Off-grid cabins, sheds & small businesses

• Hybrid self-consumption with PV inverter or Victron MPPTs

• Mobile & marine power where reliability matters

What’s in the box

• MultiPlus-II 48/5000/70-50 230V GX unit

• DC and AC terminal hardware

• Quick start & safety documentation

Technical highlights (at a glance)

• Battery voltage: 48 V nominal

• Inverter rating: 5000 VA (approx. 4000 W continuous)

• Charger current: up to 70 A @ 48 V

• AC input/output: 230 V, 50 Hz

• Transfer switch: 50 A (-50 model)

• Interfaces: VE.Bus, VE.Can, VE.Direct (x2), USB, Ethernet (GX)

• Monitoring: Built-in GX (Venus OS), VRM cloud, VictronConnect

• Protection: Overload, over-temp, short-circuit, low/high battery, programmable alarms

• Warranty: 5 years (Victron standard)

Installer notes

• Configure with VEConfigure/GX for ESS/off-grid modes, grid codes and charge profiles.

• Supports parallel and 3-phase systems—use matched units and follow Victron wiring guidelines.

• For lithium systems, enable DVCC and use a compatible BMS for precise charge control.

Bring your system online in minutes, then fine-tune from anywhere. The MultiPlus-II GX is the cleanest path to a professional-grade energy system with best-in-class reliability and control.