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Old 11-30-2020, 08:07 PM   #1
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1986 29' Sovereign
Chanhassen , Minnesota
Join Date: Sep 2010
Posts: 78
Integrated Inverter / Charger recommendation? – Magnum?

Integrated Inverter / Charger recommendation? – Magnum?

It is time to choose a charger and inverter for the 1986 29’ side bath Sovereign renovation and I’m looking for recommendations on Magnum or an alternate integrated model.

I have a 29’ 1986 Sovereign side bath model with front accessed battery boxes. There is a space between the battery boxes where I plan on putting the inverter/charger. (21.5” w, 11” h, 16” d). This is the original location of the converter/charger and thermal breakers. My batteries will be two 12V Lifeline group 27 or 31’s (100 – 130 Ah x 2). I rebuilt the boxes and confirmed the 31’s will just fit.

So far we have done little boondocking and estimate one to two days of it in a trip would be a lot. I’m upgrading to the group 31’s to add some capacity. I felt we could get by with a 1000W of inverter for (TV, charging phone/computer, Keurig coffee and occasional blender use).

Inverter / Charger selection parameters
1) Integrated inverter / charger with simple integration to control panel, battery monitor.
2) Pure sine model
3) Future expansion to solar is preferred.
4) US or European suppler (no Chinese)
5) Power 1000 – 1500W inverter output and a 50A min battery charger.
6) A model that fits in my allocated area.
7) So far I like what I have seen from Victron however the integrated product solutions are generally higher power and mostly 230V.

I was about ready to settle on the small Magnum Dynamics (MMS1012) unit until I read some negative comments on it.

* Is the Magnum MMS1012 a reliable product?
* Should consider the Magnum MS2012?
* Is there a better Victron or Xantrex integrated solution?
* Should I give up on the integrated inverter/charger in the sub 2kw range and go to separates, like the Victron Phoenix charger and Phoenix inverter?
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Old 11-30-2020, 09:23 PM   #2
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2020 30’ Globetrotter
2014 23' International
Dadeville , Alabama
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Victron MultiPlus 3000 is just about the only way to go.
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Old 11-30-2020, 09:36 PM   #3
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Jamestown , Rhode Island
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Our trawler uses a Magnum inverter charger and although it has given us 4 heavy seasons of good service, I’ve chosen the Victron MultiPlus for our new Airstream. Victron has a very good reputation! I’d personally avoid Xantrex... We have owned that companies product in the past and the failure rate is just too high.
Hope that helps...
Patiently waiting for our Globetrotter 25 to be built and shopping for the next tow vehicle breaking in our new GMC 2500 Sierra Denali Duramax.
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Old 12-04-2020, 09:07 PM   #4
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1986 29' Sovereign
Chanhassen , Minnesota
Join Date: Sep 2010
Posts: 78

I made some last minute design changes to my electronics cabinet to allow room for both 12V 2000 + 3000 VA Victron MultiPlus products (21.5”w x 11” d x 24” h.). I lost some storage but this gives me more capability. At this point I should be able to “mechanically fit” either the Victron MultiPlus 12/2000/80, 12/3000/130 or the Magnum MS2012.

What about a good electrical match? Since I have only two AGM batteries at 105 – 125 Ah each (either group 27 or 31) is this enough for the inverter? The Victron recommends a min of 300 Ah. I was planning on wiring these in parallel with #4 AWG wire from each battery (& 125A breaker) to a post. The link from the posts to inverter would be larger. Can you limit the demand from the inverter?

I’m in Minnesota and we don’t appear to have a Victron dealer / installer except for the typical RV service center. Since I would do the actual install is there a recommended national supplier who would sell me the equipment and make the component recommendations / schematic? I reached out to AM Solar as they appear to have good engineering capabilities.

I appreciate your comments!

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Old 12-04-2020, 10:53 PM   #5
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Battle Ground , Washington
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AM Solar is a good source, I used them myself for my original install. You might also try PKYS (pkys.com) they're in MD. I used them for an upgrade to my system that I'll install this winter.
Harold & Rebecca

Our thread:
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Old 12-05-2020, 02:23 AM   #6
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1986 29' Sovereign
Chanhassen , Minnesota
Join Date: Sep 2010
Posts: 78
Thanks for your recommendation and thread link. I just finished going thru your thread and got a bunch of ideas. What great work you are doing on your project.

I will reach out to PKYS as they look very capable.

Thanks again!
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Old 12-06-2020, 01:12 PM   #7
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2019 30' Flying Cloud
Grass Lake , Michigan
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We installed a Xantrex 2000w inverter/charger and are happy with it. Have owned that brand previously on boats. I think it meets most of your stated requirements.
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