question

caki avatar image
caki asked

Panel configuration for 24V Battery charging

I have a MPPT 100/30, an EG4 24V 200Ah LifePo4 Battery https://cdn.shopify.com/s/files/1/0559/2147/5789/files/24V200AH_LIFEPO_-_5YR_WARRANTY.pdf?v=1631731279
and three Solar Panels Q.PLUS L-G4.2 330 panels.

I'm wondering what is the best configuration for the panel wiring. I was considering the 3 in parallel, but I'm unsure the voltage is ideal. Panel specs are attached.
The coldest that get in my place is around 0F/-18Cq330.png



MPPT SmartSolar
q330.png (158.9 KiB)
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2 Answers
kevgermany avatar image
kevgermany answered ·

Parallel is your only option. In series, they are well over the 100V limit of the MPPT

Adding a panel won't help, you're already over the capacity of the MPPT

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caki avatar image
caki answered ·

Let add that the panel is a 72 cell. The charging voltage for the battery is 29v, so with the panels in parallel the voltage may be around 35v. I certainly can't put them in series with 3, so would I need an additional panel to make a pair of panels in series, i.e. 70v?

Thanks

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