Description
xVictron MultiPlus Compact 12/800/35-16 230V VE.Bus Inverter Charger
The Victron MultiPlus Compact 12/800/35-16 is a combined inverter and battery charger in a single compact unit, designed for 12V DC systems with 230V AC output. It is suited to marine, vehicle, off-grid and backup power installations where space is limited but reliable AC power and efficient battery charging are both required.
Key Features
- Combined inverter and charger in one unit, eliminating the need for separate devices and reducing wiring complexity.
- 800VA continuous inverter output at 230V AC, suitable for powering essential loads from a 12V battery bank.
- 35A multi-stage battery charger with adaptive charge algorithm, compatible with lead-acid and lithium battery chemistries.
- 16A AC transfer switch allows connection to shore power or a generator, with automatic switchover when AC input is available.
- PowerControl function limits the total AC current drawn from shore power or a generator, preventing overload of the supply.
- PowerAssist function supplements AC input with inverter power during peak demand, allowing a smaller generator or shore supply to be used.
- VE.Bus communication interface enables system integration, remote monitoring and configuration via Victron GX devices and VEConfigure software.
- Compact form factor and 11.5 kg weight make it practical for installation in confined spaces such as boat engine rooms or vehicle lockers.
Product Overview
The MultiPlus Compact 12/800/35-16 operates as a true sine wave inverter, converting 12V DC battery power to clean 230V AC. The 35A charger uses an adaptive three-stage algorithm (bulk, absorption, float) that adjusts to battery condition over time, which extends battery life compared to fixed-voltage chargers. The unit accepts a wide DC input voltage range, protecting the battery bank from over-discharge while maintaining output to connected loads.
The 16A transfer switch is at the core of the unit's dual-mode operation. When shore power or a generator is connected and within tolerance, the MultiPlus passes AC through to the loads and simultaneously charges the batteries. If the AC input fails or is disconnected, the unit switches to inverter mode in under 20 milliseconds, fast enough to keep most sensitive equipment running without interruption. PowerAssist allows the inverter to top up an undersized AC source during load peaks, which is particularly useful on boats with limited shore power connections or when running a small generator.
VE.Bus connectivity means the unit can be integrated into a wider Victron system. It can be monitored and configured remotely via a Victron GX device (such as a Cerbo GX), and settings including charge current, AC input current limit and battery type can be adjusted using VEConfigure software. The MultiPlus Compact range is the space-saving variant of the standard MultiPlus line, sharing the same core functionality in a reduced footprint.
Technical Specifications
| Parameter | Value |
| SKU | CMP121800000 |
| Battery Voltage | 12V DC |
| Inverter Output Power | 800VA |
| Charger Output Current | 35A |
| AC Transfer Switch Rating | 16A |
| AC Output Voltage | 230V AC |
| AC Output Waveform | True sine wave |
| Communication Interface | VE.Bus |
| Weight | 11.5 kg |
| GTIN | 8719076065067 |
Applications
- Marine installations requiring shore power charging and inverter backup from a 12V battery bank.
- Motorhomes and campervans needing 230V AC output and battery charging from a generator or hook-up supply.
- Off-grid cabins and small remote installations with a 12V battery system and occasional generator input.
- Backup power systems for critical loads where fast transfer from mains to battery is required.
- Vehicle-based power systems (ambulances, specialist vehicles) requiring both AC output and battery maintenance.
What Is Included
- 1x Victron MultiPlus Compact 12/800/35-16 230V VE.Bus inverter charger unit
Installation Notes
Installation should be carried out by a qualified electrician or accredited installer familiar with DC battery systems and 230V AC wiring. The unit must be connected to an adequately rated 12V battery bank with appropriately sized DC cabling and fusing. AC wiring must comply with current IET Wiring Regulations (BS 7671). For marine installations, compliance with relevant ISO and ABYC standards is recommended. This unit is not intended for grid-tied or G98/G99 export applications. Configuration via VEConfigure software requires a VE.Bus to USB interface cable (sold separately).
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:
- 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.