question

Herb avatar image
Herb asked

Can I use a multiplus to charge another multiplus?

I’m a Victron fanatic. I have an old 12/1200va multiplus connected to 180x 2 batteries which are charged with 150/35 victron mppt. I recently purchased a 48/ 3000va multiplus with a 200ah battery bank. Can I use 12/1200 power output to connect to 3000v so that I can the 48v battery bank?

Thank you in advance.

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2 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

It should work but you have to adjust the input current limit of the 48/3000 to not overload the 12/1200.

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Herb avatar image Herb commented ·

Thank you.

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JohnC avatar image
JohnC answered ·

Hi @Herb

If that bank is 200Ah at 48V, then you'll have the tail wagging the dog. You could consider charging the 48V bank with that 150/35, 4 times the grunt, but may need panel restringing.

Then charging the 12V bank with the 12/1200 Multi. Good match, and no worries overloading anything..

Just sayin - fellow fanatic.. :)

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Herb avatar image Herb commented ·

Thank you so much, my 12/1200VA battery bank is charged with 3x series by 2 parallel (6x160w panels). So I don’t have enough panels to charge the 48v setup due to space issue. I was hoping to dump access once the 12v system is fully charged.

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