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Mismatches Solar Panel array

true north

New Member
Joined
Jul 22, 2024
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4
Location
winnipeg
I am buying a 2005 dodge sprinter with a unknown 200w solar panel fixed to the roof.

I am planning and have purchased a lot of equipment to 'upgrade' the solar system to the 12V system. I have purchased 2-100amp LiTime Lithium batteries, 2000w Renogy pure sine inverter, Renogy 40A MPPT charge controller, Renogy 20a DC to DC charger, Renogy Battery Monitor, 20A Battery Charger, plus 12v components for circuits.

I have purchased 2 - 100w renogy solar panels (24.3VOC, 5.21 Amps Open current).
I am thinking/(hoping???) the 200W solar panel fixed to the roof will be around the same as other 200W panels with specs of (23VOC, 11.05 amps open current)

My question is to maximize my solar input efficiency and safety to my 40amp MPPT Renogy Charge Controller.

Can I connect the 2 - 100W panels in parallel, then connect the 200W panel in series?

my calculations would give me 47.3 VOC and 10.42 Amp open current.

Would anyone be able to provide some technical advise?
I have also purchased 3 - 125W panels from Costco that i am planning on returning. They show on the box a 7.3amp rating. But, i am not sure how the math would work out to be efficient.

thanks a lot in advance
 
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