Description
xVictron MultiPlus-II 12/3000/120-32 230V Inverter Charger
The Victron MultiPlus-II 12/3000/120-32 is a 3000VA inverter charger operating on a 12V battery bank with a 120A battery charger and 32A AC current limiter. It is designed for off-grid installations, marine and vehicle applications, and backup power systems where a single, integrated unit is needed to handle both inverting and charging duties.
Key Features
- 3000VA continuous inverter output with a 12V DC input, suitable for moderate to heavy AC loads.
- 120A multi-stage battery charger with adaptive charge algorithm, compatible with a wide range of battery chemistries including lithium, AGM, gel and flooded lead-acid.
- 32A AC input current limiter, allowing the unit to supplement shore power or generator input with battery power when the source is limited.
- PowerControl and PowerAssist functions prevent overloading of a limited AC source by drawing additional current from the battery bank as required.
- Built-in transfer switch with a typical switchover time of less than 20 milliseconds, maintaining continuity for most connected equipment.
- Two AC outputs: AC-out-1 remains live during a mains failure; AC-out-2 is disconnected when running on inverter, allowing non-critical loads to be shed automatically.
- Compatible with Victron VE.Bus for system integration, remote monitoring via GX devices, and configuration through VEConfigure software.
- Supports parallel and three-phase operation when multiple units are used together.
Product Overview
The MultiPlus-II combines a sine wave inverter, a multi-stage battery charger, and an automatic transfer switch in a single enclosure. The 120A charger output is substantial for a 12V unit, making it practical where fast battery recovery is a priority, such as after a generator run or when connected to shore power with limited availability. The adaptive charge algorithm adjusts charge parameters based on battery behaviour over time, which is particularly useful in installations where the battery bank is not always fully discharged before recharging.
PowerAssist is one of the more practically useful features for installations with a constrained AC source. When the connected load exceeds what the shore power or generator can supply alone, the unit draws the deficit from the battery bank rather than tripping the source breaker. This is especially relevant on boats, in campervans, or in off-grid cabins where the generator or shore supply has a fixed current limit. The 32A input current limit on this model is configurable, giving the installer control over how much of the source capacity is reserved for charging versus load supply.
The dual AC output configuration adds practical load management without additional switching hardware. AC-out-1 is always live when the unit is operational, while AC-out-2 drops out when the inverter is running on battery alone. This allows non-essential loads such as water heaters or air conditioning to be wired to AC-out-2, reducing battery drain automatically without any manual intervention.
Technical Specifications
| Parameter | Value |
| SKU | PMP122305010 |
| Inverter Output Power | 3000VA / 2400W |
| DC Input Voltage | 12V |
| Battery Charger Output | 120A |
| AC Input Current Limit | 32A |
| AC Output Voltage | 230V |
| AC Outputs | 2 (AC-out-1 always live; AC-out-2 disconnects on inverter) |
| Transfer Switch Time | Less than 20ms (typical) |
| Communication | VE.Bus |
| Weight | 20.5 kg |
| GTIN | 8719076048916 |
Applications
- Off-grid cabins and remote properties requiring reliable AC power from a 12V battery bank.
- Marine installations where shore power is supplemented by battery during peak demand.
- Motorhomes and large campervans with significant AC load requirements.
- Backup power systems for critical equipment where fast transfer and continuous AC-out-1 supply is required.
- Hybrid off-grid systems paired with solar charge controllers and a GX monitoring device.
- Parallel or three-phase configurations where multiple MultiPlus-II units are combined for higher output.
What Is Included
- 1 x Victron MultiPlus-II 12/3000/120-32 230V inverter charger unit
Installation Notes
The MultiPlus-II 12/3000/120-32 handles high DC currents at 12V and must be installed by a qualified electrician or accredited installer. Cable sizing, fusing and battery connections must be rated appropriately for the current involved. For any grid-connected or shore-power-connected installation in the UK, compliance with current wiring regulations (BS 7671) is required. Configuration via VEConfigure is recommended before commissioning to set battery type, charge parameters and AC input current limits correctly. For marine installations, follow applicable marine wiring standards. Do not attempt installation without appropriate electrical competency.
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Non-faulty items returned after 14 days and/or not in their original, undamaged packaging can only be exchanged for store credit - 15% off the items returned.
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.