Done the battery change already, not so simple as the vid would lead you to believe. Removing the back cover takes a lot of patience and effort as it is damn tight, the plastic removal kit that came with the battery is good for one battery change only, even broke one of the plastic piece. Also,, for my set, the original battery was glued onto the back of the assembly, I was wondering why it simply doesn't come off as easily as the vid.
I disconnected the Antenna though I don't see how it would block or prevent removal of battery. Now, my pointer finger hurts because of all the force I'd used on the plastic piece to pry open the case.....charging my Mi Pad 4 now, hopefully, battery is good for at least 2 years of usage, by then, I'd be ready to consider upgrading to a more powerful tablet.