Product Datasheet · Off-Grid Inverter-Charger

Victron
MultiPlus-II 48/5000

5kVA / 4000W Pure Sine Wave Inverter-Charger with Anti-Islanding
Issued 2026 Model: MultiPlus-II 48/5000/70-50
Type: Inverter + Charger + Transfer
Application: Off-Grid / Backup / ESS
Origin: Victron Energy (Netherlands)
The industry standard. The Victron MultiPlus-II is the most widely deployed off-grid inverter-charger in South Africa, trusted on farms, lodges, remote homes, marine, and mobile installations across the continent. This datasheet covers the 48/5000/70-50 model we hold in stock — the workhorse configuration that anchors most Victron-based off-grid and backup systems.

Key Advantages

→ 01

All-in-One Design

Combines inverter, battery charger, and high-speed AC transfer switch in a single robust steel enclosure.

→ 02

PowerAssist Technology

Boosts the capacity of a generator or shore power by adding extra power from the battery when demand peaks.

→ 03

ESS & VRM Ready

The heart of any Victron Energy Storage System with free cloud monitoring via the world-class VRM Portal.

→ 04

Scales Up Massively

Parallel up to 6 units for 30kVA single-phase, or configure for split-phase & three-phase systems.

Inverter & Charger Specifications

Specification Inverter Mode Charger Mode
DC / AC Voltage 48V DC (range 38–66V) 187–265 VAC input
Continuous Output @ 25°C 5000 VA / 4000 W —
Continuous Output @ 40°C 3700 W —
Continuous Output @ 65°C 3000 W —
Peak Power 9000 W —
Max Efficiency 96% 94%
Zero-Load Power Draw 18 W (12 W AES mode) —
Max Battery Charge Current — 70 A (adaptive 4-stage)
Output Voltage / Frequency 230 VAC ± 2% / 50 Hz ± 0.1% —
Absorption / Float Voltage — 57.6 V / 55.2 V

System & Mechanical

System Capabilities

Transfer switch time< 20 ms
Anti-islandingBuilt-in (grid-code compliant)
PowerControl / PowerAssistUp to 50A external CT
Parallel operationUp to 6 units
3-phase / split-phaseFully supported
ESS compatibleYes (Victron ESS)
Battery typesLithium & Lead-Acid
Programmable relayYes (general alarm / DC UV / genset)

Mechanical & Environmental

IP ratingIP22 (indoor)
Enclosure materialSteel
CoolingVariable-speed smart fan
Operating temp−40°C to +65°C
Dimensions (W × H × D)323 × 565 × 149 mm
Weight30 kg
CommunicationsVE.Bus / Bluetooth (dongle)
Monitoring optionsCerbo GX / VRM / VictronConnect

Warranty & Support

5yr
Standard Warranty
∞
Free VRM Cloud Monitoring
96%
Peak Efficiency

Certifications & Compliance

CE · RCM · NRS 097-2-1 (South Africa) · VDE-AR-N 4105 (Germany) · AS/NZS 4777.2 (Australia) · G98/G99 (UK) · ENA EREC G99 · IEC 62109-1/2

Ideal Applications

Rural & remote off-grid homes · Farms & agricultural operations · Game lodges & eco-tourism · Marine & mobile installations (motorhomes, yachts) · Workshop & backup power · Telecoms remote sites · Small commercial backup · Critical-load UPS replacement · Hybrid grid-tied ESS with Victron MPPT solar chargers or Fronius/PV inverters