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SJ-Chris's avatar
SJ-Chris
Explorer II
Mar 13, 2022

MPPT solar charge controller with 12v panels...

I wanted to share an MPPT observation/experience (some of you likely are already aware, but many others maybe not...) I just completed my 3rd solar install on my 3rd RV. (I enjoy these projects, a...
CA_Traveler's avatar
CA_Traveler
Explorer III
Mar 15, 2022
The controller input voltage maximum MUST be greater than the panel Voc or the controller can be damaged. This is especially important for SERIAL connected panels. The difference should include the voltage change due to the temperature compensation factor.

On a sunny day Voc can be caused by "cloud edge effect" and other transistional shade conditions like driving.

Updated At 0F each of my panels Voc will increase 5V or 15V total for 3 panels.

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