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PNW Fireguy · 04-10-2022, 05:17 PM

40v is pretty low and if I read your post right, you are measuring 36v at the MPPT input…so you are losing 10% of the PV array voltage. 3S would get you up to 60v.

04-10-2022, 05:17 PM	#15
PNW Fireguy Montana Master Join Date: Nov 2015 Location: Arlington Posts: 1,523 M.O.C. #18081	40v is pretty low and if I read your post right, you are measuring 36v at the MPPT input…so you are losing 10% of the PV array voltage. 3S would get you up to 60v.