question

ward avatar image
ward asked

Solar charge not charging. MPPT 250/100-Tr

Hello!

Have 48 volt panels and Lithium Iron Phosphate batteries.

Fluke says voltage from panels is 49.90.

The 5 volt difference required between charger batteries won't allow the charge.

4 panels

25 ft run

#2 wire

Lithium Battery
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3 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

"The 5 volt difference required between charger batteries won't allow the charge."

That's you answer, you need a higher PV voltage.

You have to connect at last 2 Panels in series.

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Michelle Konzack avatar image
Michelle Konzack answered ·

If you have 4 panels and a 250V Charger,put the 4 Panels in series

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ward avatar image
ward answered ·

Thanks for helping this old pea brain!

Ward

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