If you mean the bell jar display case that can recharge the drone, I have one and have never used it, for either purpose. In fact I had forgotten I had it lol.
I have seen them but honestly can’t imagine I would ever use it. I never leave or charge batteries in my drone and I store the drone itself in my case ready to go fly…
I have the charging bell and it more or less is a conversation piece when company visits.
When charging, the base ring glows white and dims, an eye catcher.
Admitted, it is pretty kewl.
Also, mine is for sale.