I have a 2021 Grandby with a Maxxaire fan with remote. My camper has seen several days of operation with the solar system putting out 14.6 volts for several hours (due to battery already at or near full charge) with the fan on and off. I subsequently dialed the charging voltage down to 14.2. It’s also briefly seen 14.8 volts a couple of times from the Iota shore power charger before I realized how high that device would push the voltage trying to force 30 amps into an already charged lithium battery when it first comes on in bulk charge mode. The 14.8 exposures were with the fan off. (I now use the Iota only as a 13.4 volt shore power converter and not regularly as a charger. )
My fan and remote control have been unaffected by this so far.
Edited by Jon R, 24 February 2022 - 07:13 PM.