Anyone have any experience with these things? Here’s one that I found for a reasonable price on Amazon: https://a.co/d/aJs06Eg

I saw one over the weekend and it was a larger device with four blades and intended to be mounted over people’s heads and plugged into a wall outlet and I was intrigued enough to look closer into these devices to see if there was anything that might be useful for a convention table display that I could mount on my cubicle panels. The trouble is that all the search results that I’m coming across are of a similar nature: Asian imports where the reviews say the instructions aren’t in English and the item description doesn’t give enough breakdown for me to know what the electrical requirements are. Since this would be used at my convention table I would want to get something relatively lightweight with a USB power cable that I can plug into my portable battery power bank rather than going into a wall outlet. I do have a cable converter to make a USB cable compatible with a barrel jack (https://a.co/d/dejaLUI) but I don’t know enough about electrical details to be sure that any fan display I might buy will be properly powered from my battery bank and not suffer a short circuit in the process. What I would *LOVE* is to find a store that sells these so I could see them in person and ask questions from a sales person but again, all search results point to these being Asian imports so I’m left with questions. Maybe someone reading this can offer some advice?

Thanks in advance!