Forum Discussion

TURNKEY's avatar
TURNKEY
Explorer
Mar 24, 2019

How to power a fan only when solar is charging.

I want to run an exhaust fan from my battery compartment to vent out hydrogen during charging cycles but I don't want it to run 24/7 as I do now. I tried powering a computer fan off my panels before t...
MEXICOWANDERER's avatar
MEXICOWANDERER
Explorer
Mar 27, 2019
If voltage series goes above 36 for MPPT get a 48 volt fan. Most "12" volt panels operate near 20-22 volts open circuit. Fan voltage maximum IS TO PROTECT THE FAN WHEN CHARGING STOPS IN FULL SUN.

Yes this works.
And it's simple.
And inexpensive.

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