Thanks for the reply. I know the power requirements are low and what can be used.
I was secretly hoping for an answer like "connect it to the GEN ATS 12v dry contacts on the inverter and click this option on the display to make the contacts fire off permanently".
I don't have any nearby power points so was trying to find an easy way to power the fans if I went the same route.
Dont feel like wiring in another plug socket or running an extension.
Lol perhaps I should wire 4 fans in series and then connect directly to the battery