SKU: 16861042739

Victron 48V 4500W MultiPlus-II 48/4k5/55-32 Inverter/Charger

Sale price$481.65 Regular price$535.17
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Description

Victron 48V 4500W MultiPlus-II 48/4k5/55-32 Inverter/ChargerVictron MultiPlus II 48V Inverter Charger with PowerAssist and ESS Integration Professional Grade Inverter Charger for Demanding Off Grid and Backup Power Systems The Victron MultiPlus II is a high performance multifunctional inverter charger designed for demanding marine, mobile, and off grid applications. Combining a robust 230V pure sine wave inverter with a powerful adaptive battery charger, this unit features Energy Storage System (ESS)

Victron MultiPlus-II 48V Inverter/Charger with PowerAssist and ESS Integration

Professional-Grade Inverter/Charger for Demanding Off-Grid and Backup Power Systems

The Victron MultiPlus-II is a high-performance multifunctional inverter/charger designed for demanding marine, mobile, and off-grid applications. Combining a robust 230V pure sine wave inverter with a powerful adaptive battery charger, this unit features Energy Storage System (ESS) capabilities, allowing seamless integration with solar, grid-tied, and generator systems for intelligent energy management. Delivering continuous output of 4 kW and peak power of 7 kW, it ensures reliable operation for critical loads even during high-demand periods. The integrated 55 A charger rapidly replenishes your battery bank, minimising generator run time and maximising solar utilisation.

PowerControl & PowerAssist – Intelligent Energy Management

The MultiPlus-II’s PowerControl feature allows precise limitation of AC input current, preventing overload on generators or the grid. PowerAssist extends this functionality by supplementing limited grid or generator power with stored battery energy during peak loads, then recharging the battery once demand decreases. This maximises system efficiency and guarantees uninterrupted power to essential loads, making it ideal for sites with limited shore power or generator capacity.

Seamless AC Supply & Dual Output Functionality

The main AC output delivers uninterrupted power during grid or generator outages, with transfer times under 20 milliseconds, keeping sensitive electronics operational. The secondary AC output is live only when input power is present, ideal for non-critical loads such as water heaters. Both outputs integrate with PowerControl and PowerAssist for smart load management, ensuring critical loads always have priority.

Scalable & Flexible System Configuration

Up to six MultiPlus-II units can be connected in parallel for expanded power capacity. Three units of the same model can be configured for three-phase output, and up to six sets of three units can operate in parallel for very large installations. On-site configuration is simple via VEConfigure software, while real-time monitoring is available through Cerbo GX, Ekrano GX, Digital Multi Control Panel, VictronConnect, or the VRM Online portal.

High Efficiency & Robust Design

With a maximum efficiency of 95%, the MultiPlus-II minimises energy losses while delivering reliable AC power. Its rugged IP21-rated steel enclosure and fan-assisted cooling allow safe operation in temperatures from -40°C to +65°C. Compatible with lithium, lead-acid, and zinc-bromine batteries, it provides flexibility for diverse energy storage systems. The internal transfer switch is rated at 32 A, ensuring safe passage of grid or generator power.

Key Features

  • Pure sine wave inverter with 4 kW continuous output and 7 kW peak power
  • Powerful 55 A adaptive battery charger for rapid recharging
  • PowerControl and PowerAssist prevent AC input overload and supplement limited sources
  • Ultra-fast <20 ms transfer switch for uninterrupted UPS-grade backup power
  • Parallel and three-phase capable for scalable system design
  • Wide -40°C to +65°C operating temperature range with fan-assisted cooling
  • Compatible with lithium, lead-acid, and zinc-bromine battery chemistries
  • Integrated ESS functionality for advanced solar and grid energy management
  • Remote monitoring and control via VictronConnect, VRM portal, or GX device

Applications

  • Marine and yachting systems requiring uninterrupted AC power
  • Mobile vehicles and off-grid installations
  • Residential and commercial solar + battery setups
  • High-demand off-grid energy storage and backup power
  • Critical load support in professional energy systems

Equip your installation with the Victron MultiPlus-II for advanced energy management, high-efficiency AC power, and seamless support for critical loads in demanding off-grid, mobile, and professional environments. Order your Victron MultiPlus-II inverter/charger today and take control of your energy independence.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 16861042739

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4.7 ★★★★★
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Verified Purchase
Janice A. Obrien
Fort Morgan, US
★★★★★ 5
Large time, date, and day of the week, with indiglo too! But band doesn't hold up.
Color: Pink/Rose Gold-Tone, Color: Pink/Rose Gold-Tone
I am used to keeping my watch on all the time, so always buy “water resistant” ones. This one seems to be holding up well to using in the shower, but time will tell — I’ve only had it a month and a half so far. [My last 3 (one a Casio; two different Timexes) stopped working after a year or two, and either you couldn’t change the battery or it didn't help for long.] It’s not overly big / i.e. feminine enough, yet easy to read with my older eyes. I like the rose gold, fleshy pink color, and the strap works great - no links to remove or stretch to find difficult to get over my fist, and it doesn’t roll so much to my pinky side that I can’t see it when I rotate my wrist to see the time or date (like my last . The indiglo works well too. I’m very happy with it! I will update my review if it doesn’t last long. Update: I love this watch, as it matches my skin color pretty well (which makes it less obtrusive) and is waterproof. I've gone through two of them now, though. Each only lasted 9 months, but the watches themselves were still working. I was doing chores involved with taking care of my goats, and ripped the area where the watchband attaches to the watch, and unfortunately, that rip keeps the pin from securing. Nevertheless, I might buy one again. My husband says it's the nicest one I've had and is okay with buying a new one every 9 months. Picture of the small rip on the right side.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 12, 2024
A
Verified Purchase
Adham
Phoenix, US
★★★★★ 5
Nice Simple Watch
Color: Pink/Rose Gold-Tone, Color: Pink/Rose Gold-Tone
Nice simple watch. Bought it for my 11-year-old daughter so she can keep time while running. Her wrist is 5 inches, and the watch tightens up enough on her wrist for a decent fit. She is able to use the watch easily. Note, no directions on how to set up, but I as able to figure it out. Recommend 5 stars.
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Reviewed in the United States on June 2, 2026
A
Verified Purchase
Andres Monroy
New York, US
★★★★★ 4
Very good watch
Color: White/Chrome-tone
Was a gift for my girlfriend. I even liked it has a mode for two different times sets. The strap does get dirty fast. But its really useful this watch and very good in estetics.
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Reviewed in the United States on October 24, 2025
A
Verified Purchase
Ashley
Houston, US
★★★★★ 5
Very nice feminine quality watch
Color: Pink/Rose Gold-Tone, Color: Pink/Rose Gold-Tone
I purchased this watch for work. As a nurse, I need the exact date and time in military time and seconds, so this watch is perfect. It’s the 3rd of this kind that I’ve ordered over the years and this one is definitely my favorite. Much easier to program than previous models and the look is very feminine and cute. Of course being water resistant is important since I have to wash my hands a million times a day. I’m hoping it will last a long time as previous models have. Usually the plastic band breaks from daily wear and tear before the battery has ever stopped, but that’s after years of daily use. That’s why I prefer to stick with this brand. They’ve always been very durable, lightweight, and effective for what I need it for. I would definitely recommend. This version is the cutest, like I would wear it even when not working. So I’m very happy with it. *** Update: 2 years later I still wear this watch everyday, at work or not. Has never broken, battery still going strong and still so pretty. Awesome 👏🏻
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Reviewed in the United States on June 13, 2024
C
Verified Purchase
California customer
Whiting, US
★★★★★ 5
Great modest, minimalist digital watch: 2 time zones, Indiglo, subtle hourly chime
Color: Purple/Silver-Tone
Great value and this is nice, low-key but functional and sleek timepiece. I bought it to replace an older Ironman (bulkier) watch that finally reached end of life after LOTS of adventures (still functions, but strap and face just really couldn't be taken into corporate or social settings without expectation of some heckling). I REALLY like most of the new features (especially the dual time zones, hourly chime (can toggle on/off), and Indiglo applied to the numbers/text rather than as background), I probably would have switched to this earlier if I had known of them. Slight negative that the hourly chime toggle is nested within the time setting workflow, so can't just nearly instantly switch it when heading into movie/performance/other setting where want to silence it fully. I can't speak to the water resistance of this one yet, have been taking it off to shower and haven't been swimming yet. (Taking it off to shower in part because had seen other reviews noting that the trim around the dial may not be long-lasting. So out of caution to extend its appearance, I'll probably remove it for salt/chlorinated water swims (not timing laps)). Only other aspect should note is that the feature that helps to "lock" the strap band at end (bit of a nub to catch) is bit tricky when putting it on / taking it off, may be even more so for those with arthritis or other condition that would make it extra challenging/frustrating to maneuver and engage. Quite happy with it overall though, just a slight annoyance when putting on / taking off (which may not apply for most if they just leave it on).
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Reviewed in the United States on January 17, 2023

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