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Unyalli's avatar
Unyalli
Explorer
Jan 29, 2014

Ideas needed for 12v systems if I do 24v

I want to do a 24 volt system so I can use the Magnum MSH4024M Hybrid inverter instead of the MSH3012M. The question is how to power the existing 12 volt stuff.

1) Use an MPPT solar controller to keep my existing group 27 Interstate battery charged off my GC2's?

2) Use a Samlex SDC-30 24VDC to 12VDC converter?

Other ideas?

Jeff
  • 2oldman's avatar
    2oldman
    Explorer II
    Jan 29, 2014
    I'm not sure I understand #1.

    I have a 24v system. 800+ watts of solar at 100+vdc, tied to an Outback 60a controller running 24v to 8-12v Lifeline AGMs at 640ah. Samlex 2kw 24v inverter, and this little guy:



    That's a Victron DC/DC converter with rheostat controlled variable output from 10-15vdc. I keep it at 12.5-12.6 all the time. I can find the model number if you need it. I believe it's rated 25a. I read the specs on your Samlex, and I don't think I saw that the output was configurable. I'd rather see you do that.

    I'm really happy with this system, and, the smaller wire is so much easier to work with. And with these new AGMs, no more watering!! woo hoo

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