It’s quite obvious the change in performance in the mount when voltage drops and I’ve always been a bit concerned with undervoltage causing damage to the electronics…so I got one of these things that convert any input voltage between 9-13v up to 13.8v.
https://www.ebay.com.au/itm/Waterpro...154756-20017-0
I’ve been using it on my eq8 and is fantastic when running on a battery that gradually drops in output voltage as the night goes on. The voltage to the mount stays constant till the battery finally dies. I use a similar different unit on my g11 that outputs 18v.
I never share this output to the mount with any other gear. But before all of that, you need to ensure the main supply is delivering enough amps to provide for all the gear with plenty to spare.