Victron Energy MultiPlus Series Victron Multiplus 800VA 12V Inverter/Charger Pure Sine Wave | 35A Adaptive Charger | 16A Transfer Switch The Victron Multiplus 800VA 12V Inverter/Charger (Model: 12/800/35-16, MPN: PMP121800000) is a versatile all-in-one power solution designed for reliable energy management in various UK applications. This compact unit seamlessly integrates a powerful 800VA (700W) pure sine wave inverter, a sophisticated 35A adaptive battery charger, and a high-speed 16A AC transfer switch. It's engineered to provide uninterrupted 230V AC power from your 12V battery bank, making it ideal for caravans, boats, motorhomes, and off-grid setups. Experience consistent, clean power that safely operates sensitive electronics and ensures your batteries are optimally charged and maintained. The Multiplus simplifies your electrical system by combining three essential devices into one robust enclosure, offering both space-saving benefits and enhanced performance. KEY BENEFIT: Combines inverter, charger, and transfer switch for a compact, efficient, and reliable power system. Key Product Features ▶ 800VA Pure Sine Wave Inverter — Delivers clean 230VAC power for sensitive electronics, with 700W continuous and 1600W peak output. ▶ 35A Adaptive Battery Charger — Intelligently charges 12V batteries with a 4-stage adaptive algorithm, extending battery lifespan. ▶ 16A AC Transfer Switch (UPS) — Ensures seamless power transition (<20ms) from grid/generator to battery, preventing interruptions. ▶ PowerControl & PowerAssist — Manages limited AC input and boosts capacity by adding battery power during peak loads. ▶ Parallel & 3-Phase Capability — Expandable system allows up to six units for higher power or three-phase configurations. ▶ Remote Monitoring Ready — Compatible with Victron GX devices for local and remote system control via VRM portal. Technical Specifications Parameter Value Inverter Output Power (Cont. @ 25°C) 800VA / 700W Inverter Peak Power 1600W DC Input Voltage Range 9.5 - 17 VDC AC Output Voltage & Frequency 230 VAC ± 2% @ 50Hz ± 0.1% Max. Efficiency 92% Zero-Load Power / Search Mode 7W / 2W Charger AC Input Voltage Range 187 - 265 VAC House Battery Charge Current 35A Starter Battery Charge Current 1A Transfer Switch Current 16A Internal DC Fuse 150A Operating Temperature -40 to +65 °C Protection Category IP21 Dimensions (H x W x D) 360 x 240 x 100 mm Weight 6.4 kg Charging & Output Modes The Multiplus 12/800/35-16 features an advanced 4-stage adaptive charge algorithm that optimises battery charging for various battery types (Wet, AGM, GEL, Li-ion). This intelligent system adjusts the charging process based on battery usage, ensuring a longer lifespan and efficient energy storage. It includes a main output for the house battery and a 1A trickle charge output for a starter battery. The pure sine wave inverter output guarantees high-quality 230V AC power, identical to grid electricity, making it safe for all types of appliances, including sensitive electronics. Its high peak power capability (1600W) allows for starting demanding loads like electric motors. Key charging modes include Storage Mode to minimise gassing and corrosion during inactivity, and BatterySafe Mode to prevent overgassing during fast charging. Temperature compensation, via the included sensor, further refines charging voltage for optimal battery health. Typical Applications Application Description Off-Grid Systems Provides reliable AC power for remote cabins, small homes, or workshops without grid connection. Mobile & Marine Power Ideal for caravans, motorhomes, boats, and RVs, offering mains-like power and efficient battery charging on the move. Backup Power Solutions Ensures uninterrupted power for critical loads during grid failures, acting as an effective UPS. Work Vehicles Powers tools and equipment from a 12V battery bank in service vans and mobile workstations. Built-In Protection Functions The Victron Multiplus 12/800/35-16 is equipped with comprehensive safety features for reliable operation. These include protection against output short circuits, overloads, battery overvoltage and undervoltage, overheating, accidental 230 VAC on the inverter output, and excessive input voltage ripple. The unit has an IP21 protection category, indicating protection against solid objects over 12.5mm and vertically falling water drops. Common Questions What is the difference between VA and W for this inverter? VA (Volt-Amperes) is the apparent power, while W (Watts) is the real power. For the Victron Multiplus 800VA, it provides 800VA of apparent power and 700W of continuous real power at 25°C. The Watt rating is generally more relevant for powering resistive loads like heaters, while VA is important for inductive loads like motors. Can this Multiplus be used with lithium batteries? Yes, the adaptive 4-stage charger of the Victron Multiplus 12/800/35-16 can be configured for various battery types, including Lithium-ion (LiFePO4) batteries, as well as lead-acid (wet, AGM, GEL) batteries. Proper configuration is essential for optimal performance and battery longevity. Are connecting cables included with the unit? No, connecting cables are not included with the Victron Multiplus 12/800/35-16. For the DC (battery) connection, Victron recommends 25mm² cable protected with a 150A mega fuse for run lengths up to 5m. Always refer to the user manual for detailed cable sizing and installation guidelines. How does the UPS function work? The Multiplus features an integrated 16A AC transfer switch that provides an Uninterruptible Power Supply (UPS) function. If the grid power fails or shore/generator power is disconnected, the inverter automatically takes over the AC supply to connected loads in less than 20 milliseconds. This rapid transfer ensures sensitive electronics like computers continue to operate without interruption. Installation Notes Installation should be carried out by a qualified professional to ensure safety and compliance with local regulations. Ensure adequate ventilation around the unit for optimal cooling, especially in warmer environments. Use correctly sized DC and AC cabling, along with appropriate fusing, as specified in the Victron user manual. Consider a Victron GX device (e.g., Cerbo GX) for advanced monitoring and remote control capabilities. Before You Buy Verify the 12V DC input and 230V AC output are compatible with your existing battery bank and appliances. Confirm the 800VA/700W continuous power rating is sufficient for your intended loads, considering peak power requirements. Review the Victron Multiplus user manual for detailed technical specifications and installation requirements. Ensure you have the necessary connecting cables and fuses, as these are not supplied with the unit. All specifications are based on verified manufacturer data. Please consult the official Victron Energy documentation for the most current and complete information. This product comes with a 5-year manufacturer warranty.
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