Eco Flow Wave 2 powered by non Eco Flow portable battery?

[Ryan Frost Outdoors]

My wife has me looking at AC options for our camping trips and I've found a few options. One of them is this Eco Flow Wave 2. But the big question I have is if you can power this from a different brand portable power station, or do you need to use the Eco Flow ones?

 

[Adam Hoover]

We bought one and I was trying to call them to find out about a hose connection on the front to recirculate the air, was on hold for 58 minutes with answer, then the line just got dropped.