SKU: 21449249935

Victron MultiPlus 12/500 - 20-16 - 120V - VE. Bus UL Approved [PMP121500100]

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Description

Victron MultiPlus 12/500 - 20-16 - 120V - VE. Bus UL Approved [PMP121500100]MultiPlus 12 500 20 16 120V VE. Bus UL Approved The MultiPlus is a powerful true sine wave inverter, a sophisticated battery charger that features adaptive charge technology, and a high speed AC transfer switch in a single compact enclosure. Next to these primary functions, the MultiPlus has several advanced features, as outlined below. Parallel Operation and Three Phase Capability Up to six Multis can operate in parallel to achieve higher power

MultiPlus 12/500 - 20-16 - 120V - VE. Bus UL Approved

The MultiPlus is a powerful true sine wave inverter, a sophisticated battery charger that features adaptive charge technology, and a high-speed AC transfer switch in a single compact enclosure. Next to these primary functions, the MultiPlus has several advanced features, as outlined below.

Parallel Operation and Three-Phase Capability

Up to six Multis can operate in parallel to achieve higher power output.  In addition to parallel connection, three units can be configured for three-phase output.  

PowerControl - Dealing with Limited Generator, Shore Side or Grid Power

With the Multi Control Panel, a maximum generator or shore current can be set. The MultiPlus will then take account of other AC loads and use whatever is extra for charging, thus preventing the generator or shore supply from being overloaded.  

PowerAssist - Boosting the Capacity of Shore or Generator Power

This feature takes the principle of PowerControl to a further dimension. It allows the MultiPlus to supplement the capacity of the alternative source. Where peak power is often required only for a limited period, the MultiPlus will make sure that insufficient shore or generator power is immediately compensated for by power from the battery. When the load is reduced, the spare power is used to recharge the battery.  

Four Stage Adaptive Charger and Dual-Bank Battery Charging

The main output provides a powerful charge to the battery system using advanced ‘adaptive charge’ software. The software fine-tunes the three-stage automatic process to suit the condition of the battery and adds a fourth stage for long periods of float charging. The adaptive charge process is described in more detail on the Charger datasheet and Victron's website under Technical Information. In addition to this, the MultiPlus will charge a second battery using an independent trickle charge output intended for a main engine or generator starter battery.  

High Start-Up Power

It is needed to start high-inrush loads such as power converters for LED lamps, halogen lamps, or electric tools.  

Search Mode

When Search Mode is ‘on’, the power consumption of the inverter in no-load operation is decreased by approx. 70%. In this mode, the Multi, when operating in inverter mode, is switched off in case of no load or very low load and switches on every two seconds for a short period. If the output current exceeds a set level, the inverter will continue to operate. If not, the inverter will shut down again.

Programmable Relay

By default, the programmable relay is set as an alarm relay, i.e. the relay will de-energize in the event of an alarm or a pre-alarm (inverter almost too hot, ripple on the input almost too high, battery voltage almost too low).  

Remote On/Off/Charger On

Three pole connector.  

On-Site System Configuring, Monitoring, and Control

After installation, the MultiPlus is ready to go. Some settings can be changed with DIP switches. 500/800/1200VA models: remote switch/battery charge voltage/inverter frequency/search mode. 1600/2000VA models:  battery charge voltage/search mode. For more settings use VE-Config or the VE. Bus Smart dongle.  

Remote Configuring and Monitoring

Install a Cerbo GX or other GX product to connect to the internet. Operational data can be stored and displayed on Victron's VRM (Victron Remote Management) website, free of charge. When connected to the internet, systems can be accessed remotely, and settings can be changed. 

Specifications:

  • PowerControl: Yes
  • PowerAssist: Yes
  • Transfer Switch (A): 16

Inverter Specifications:

  • Input Voltage Range (V DC): 9,5 – 17 V
  • Output voltage: 120 VAC, ± 2% / Frequency 60 Hz ± 0,1%
  • Continuous Output Power at 25°C (VA): 500
  • Continuous Output Power at 25°C (W): 430
  • Continuous Output Power at 40°C (W): 400
  • Continuous Output Power at 65°C (W): 300
  • Peak Power (W): 900
  • Maximum Efficiency (%): 90 / 91 / 92%
  • Zero Load Power (W): 6 / 6 / 7W
  • Zero Load Power in Search Mode (W): 2 / 2 / 3W

Charger Specifications:

  • AC Input: Input voltage range: 120VAC / Input frequency: 55 – 65 Hz
  • Charge Voltage Absorption (V DC): 14,4 
  • Charge Voltage Float (V DC): 13,8
  • Storage Mode (V DC): 13,8 
  • Charge Current House Battery (A): 20 
  • Charge Current Starter Battery (A): 1A (12 V and 24 V models only)
  • Battery Temperature Sensor: Yes

General Specifications:

  • Programmable Relay: Yes (1x)
  • Protection: a - g
  • VE.Bus Communication Port: For parallel and three-phase operation, remote monitoring and system integration  (RJ45-splitter ASS030065510 needed for 500 / 800 / 1200 VA models)
  • Remote On-Off: On/off/charger only
  • DIP Switches: Yes
  • Internal DC Fuse: 125 / 60 /30 A
  • Operating Temperature Range: -40 - +65°C / -40 to 150°F (fan-assisted cooling), Humidity (non-condensing) max 95%

Enclosure Specifications:

  • Common Characteristics: Material & Color: aluminum (blue RAL 5012) / Protection category: IP 21
  • Battery-Connection: 16 / 10 / 10 mm²
  • 120 V AC-Connection: G-ST18i connector
  • Weight: 4,4 kg
  • Dimensions (H x W x D): 311 x 182 x 100 mm / 12.2 x 7.2 x 3.9 in.

Standards:

  • Safety: EN-IEC 60335-1, EN-IEC 60335-2-29, EN 62109-1
  • Emission, Immunity: EN 55014-1, EN 55014-2, EN-IEC 61000-3-2, EN-IEC 61000-3-3, IEC 61000-6-1, IEC 61000-6-2, IEC 61000-6-3 
  • Automotive Directive: ECE R10-5
Please contact your dealer for any returns, repairs or support issues related to this product.
Quick Guide (pdf)
Owner's Manual (pdf)
Brochure (pdf)
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: 21449249935

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4.7 ★★★★★
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Verified Purchase
JFH
Dallas, US
★★★★★ 5
High quality and incredible customer service
Color: Black Full Mesh, Style: Executive
This is an extremely well made chair at a very competitive price. The packaging, assembly instructions, as well as the way the hardware was packaged and labeled is probably the best I've seen. I'm particular about tools, and the included allen wrench was better than the normal "included tools" so much so that i actually used it rather than one of my own. The assembly was easy, and the chair itself looks and feels very high quality, and is very comfortable. Perhaps best of all was the level of customer service. I emailed on a weekend to activate the warranty and request the free cushion they offer. I got a personal response in less than a day and they offered upgraded wheels for free as well. This is a company worth doing business with.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
M
Verified Purchase
Michael Verbeke
New York, US
★★★★★ 5
Great product AND customer service!
Color: Black Full Mesh, Style: Executive
I'm having a hard time writing this review because I can't tell which one I like better: the product or the customer service! I work on a computer all day, so a comfortable office chair is critical for me. This chair is great - it's adjustable in every way I need it to be, especially the armrests. The breathable mesh is both durable and supportive, and is more comfortable to sit in than the "overstuffed" chair it replaced. Let me just say: no company provides better customer service than MOLENTS. Right after assembling my chair (which was very easy, btw), I registered for the 2 year warranty they offer. The NEXT DAY I received an email from Alice in their customer service department 1) to confirm my warranty, 2) to tell me about the free foam seat cover they were sending me, and 3) to make sure the chair was comfortable and easy to assemble. Very few companies take the effort to follow up with customers right after making a purchase like that. I'm extremely happy with this purchase. This chair is worth MORE than it's weight in gold, and I strongly recommend to anyone thinking about buying an office chair to buy it from MOLENTS - you won't regret it. Oh, and if Alice's supervisors are reading this: she absolutely deserves a promotion!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
S
Verified Purchase
S. Carpenter
Battle Creek, US
★★★★★ 5
Great value and a good chair
Color: Black Full Mesh, Style: Executive
Great chair for the price. Not as solid as an Ergo but it's not thousands of dollars either. It's pretty easy to assemble and the directions are good. It rolls well on LVP flooring and they offer 'upgraded' wheels at no cost from what I can tell. I didn't order them since the included ones work perfectly. I'm 6'4" and both the seat and arm heights can be adjusted to fit me well. The mesh seat is comfortable and the back works fine. The only downside for me is that the lumbar support doesn't adjust quite high enough to actually reach my lumbar area, but I think it would work for most folks. Overall it's hard to argue with the cost and even if it only lasts a few years it's worth the money.
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Reviewed in the United States on December 21, 2025
R
Verified Purchase
Rob
Grantham, US
★★★★★ 5
Great Chair and Outstanding Customer Service
Color: Black Full Mesh, Style: Executive
I desperately needed a new office chair. I ordered this chair with the mesh seat and it spike up my sciatica. I reached out to the company and Alice took great care to address the issue. She sent me a new seat with a foam cushion and it resolved the issue immediately. The chair is incredibly comfortable with the lumbar support, adjustability and foot support. She also sent me upgraded wheels as my chair is on a thin chair mat on hard wood floors. Alice was extremely responsive with possible options and very thorough with instructions on how to replace the seat. It is a high quality chair that I anticipate will last me quite some time. I highly recommend this company and will definitely order products from them again should the need arise. Thank you, Alice!!
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Reviewed in the United States on June 10, 2026
G
Verified Purchase
Glenn R. Miller
Draper, US
★★★★★ 5
Well-packaged, quality materials, easy to assemble, very comfortable, great customer service
Color: Black Full Mesh, Style: Executive
When I received this package, I was surprised at how small/compact it was--hard to believe a high-back office chair could fit in that box! As I unpacked it, I was impressed by two things: first, how incredibly well it was packaged with an obvious intent to protect the components; second, how solid, heavy-duty, and high-quality those components were. I got the box unpacked and read the instructions. They were simple and easy to understand, and included so many "here's a good tip" notes that it was obvious that a lot of thought and experience had gone into writing them. I found the chair simple to assemble and had it done in less than 15 minutes. The chair was very adjustable. I was able to get the height to exactly what I wanted with no trouble at all. I was also able to adjust the height of the lumbar support, and to adjust how far it extended. There are a lot of adjustments you can make, the instructions lay that out quite thoroughly, too. As a result, the chair was very comfortable and helped me sit with a healthy posture. I bought this chair because I had begun having an ache in my lower back, which I suspected was due to a chair I had been using for over 5 years. Within 3 days, the back pain was gone. I was also very impressed with the customer service. Their manual mentions in multiple places things you can try if you have any issues, and always ends with "call us". Their team reached out to me after a few days to make sure I got the chair assembled with no issues and that it was comfortable. This was all part of the all-around quality of this purchase. I'm very happy with this chair!
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Reviewed in the United States on June 5, 2026

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