The Victron MultiPlus 12V 1600VA/70A represents the professional standard for combined inverter-charger systems, integrating pure sine wave inversion, sophisticated battery charging, and automatic transfer switching in a single unit that eliminates the complexity of separate components. This compact powerhouse delivers 1600VA of inverter capacity alongside 70A of charging current, making it the backbone of serious motorhome, marine, and off-grid electrical systems where reliable power conversion and battery management are non-negotiable. The unit operates as three distinct systems - a pure sine wave inverter for running 230V appliances from battery power, an intelligent battery charger when connected to mains or generator power, and an uninterruptible power supply that switches between sources automatically.
The inverter section uses Victron's proven full-bridge toroidal transformer topology that delivers clean sine wave output capable of running sensitive electronics, induction motors, and variable-speed drives without the compatibility issues found with modified sine wave alternatives. Peak power reaches 2800W for starting inductive loads, whilst continuous output maintains 1300W at 25°C, dropping to 1100W at 40°C and 800W at 65°C as thermal protection manages component temperatures. Zero-load power in search mode drops to just 3W by monitoring for loads and automatically switching the inverter on when demand is detected, extending battery life during periods when no AC loads are connected.
The charging section delivers 70A to your main battery bank through a fully adaptive 4-stage algorithm that adjusts charge profiles based on battery type - whether wet lead-acid, AGM, gel, or lithium chemistries. The microprocessor-controlled system monitors discharge patterns and automatically varies absorption time to prevent overcharging shallow cycles whilst ensuring deep discharges receive complete charging. A secondary 1A output provides trickle charging for starter batteries, maintaining them without overcharging. Storage mode drops float voltage to 13.2V for extended periods without mains connection, significantly extending battery life compared to continuous float charging at 13.8V.
The automatic transfer switch function operates as a true UPS system, detecting loss of incoming AC power and switching to inverter mode in under 20 milliseconds - fast enough to keep computers, medical equipment, and other sensitive loads running without interruption. When AC power returns, the system switches back to charging mode and resumes battery charging whilst passing AC power directly to loads. This seamless operation makes it ideal for applications where power continuity matters, from marine installations where shore power connections are unreliable to motorhomes where generator runtime needs minimising. Installation requires substantial DC cabling because the unit draws approximately 130A at full inverter load, necessitating 50mm² cable with 200A fusing for runs up to 5 metres to prevent voltage drop and heat generation. The AC connections use G-ST18i connectors that require hard-wiring into your electrical distribution system by qualified personnel. Configuration options include remote panels, computer interface via MK3-USB, or Bluetooth control through VictronConnect app using the VE.Bus Smart Dongle, allowing complete system customisation for specific battery types and load requirements.
The main limitation is the 16A transfer switch rating, which restricts total AC load to 3680W even when connected to higher-capacity shore power or generators - loads exceeding this must be switched off during transfer operations or connected through separate transfer switching. At 10.2kg and requiring adequate ventilation for the cooling fan, mounting location planning becomes important for both access and thermal management. For installations demanding reliable power conversion with professional-grade charging and seamless power transfer, this unit provides the integration and performance that separate components struggle to match, though the PowerControl and PowerAssist features require additional accessories like the Digital Multi Control Panel to fully utilise their load management capabilities.
Victron Energy MultiPlus Inverter/Charger (12V 1600VA/70A) Features
Pure sine wave output (inverter)
High start-up power (inverter)
Search Mode for reduced 'no-load' power consumption (inverter)
Transfer Switch UPS function (inverter)
Adaptive 4-stage charging (charger)
Storage mode to prolong battery life (charger)
Twin charger outputs - full current and trickle charge (charger)
Battery temperature sensor (charger)
LED fault diagnosis
Remote On/Off switching
Programmable alarm/signalling relay
Protected against output short circuit
Protected against battery voltage low/high
Protected against power overload
Protected against over-temperature
Protected against 230V AC detected on inverter output (e.g. from another AC source)
Protected against input voltage ripple too high
5-year manufacturer's warranty
Specifications Inverter
Input voltage range: 9.5 - 17.0 VDC
Output voltage: 230VAC +/- 2% (can be adjusted to 240VAC)
Output frequency: 50Hz +/- 0.1% (can be adjusted to 60Hz)
Continuous output power at 25ºC: 1600VA
Continuous output power at 25ºC/40ºC/65ºC: 1300/1100/800W
Peak power: 2800W
Max. efficiency: 93%
No-load power consumption: 10W
Zero load power in search mode: 3W
Charger
Input voltage range: 187 - 265 VAC
Input frequency: 45-65Hz
Charge voltage (absorption): 14.4 VDC
Charge voltage (float): 13.8 VDC
Charge voltage (storage mode): 13.2 VDC
Charge current (primary output): 70A
Charge current (secondary output): 1A
Overall
Transfer switch current rating: 16A (@ 230 VAC)
Internal DC fuse: 200A
Operating temperature: -40ºC to +65ºC (fan assisted cooling)
DC (battery) cable connection: Screw clamp terminals
Max. DC cable size: 50mm²
230V AC cable connection: G-ST18i connectors (included)
Ingress Protection rating: IP21
Weight: 10,2kg
Overall dimensions: 470 (L) x 265 (W) x 120 (H) mm
Associated Products
Quick View Victron Energy Digital Multi Control 200/200A GX
Quick View Victron Energy Interface MK3-USB (VE.Bus to USB)
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For further information of how to return your item, please visit the "Returning an Unwanted/Faulty/Damaged Item" section on our Help Page.
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Victron Energy Interface MK3-USB (VE.Bus to USB)
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