The whole Fediverse is still a little on the niche side, but if growth continues, I think this is exactly another development. When you work for Company X, your work email is usually somebody@companyx.com, likewise I would expect official Fediverse presences.
Where it will probably take off though is when somebody starts selling corporations a turn-key solution. Kind of how products like Outlook took over corporate email.
In theory, higher voltage × lower amps = same power (W=V×A, you can double V and halve A and get the same power). Or in this case, double the double the voltage, same current, double the power maybe?
There is still some voodoo happening with the batteries to be able to take the charge so quickly. More battery cells charging in parallel is probably part of it, but it couldn’t be all of it.
Really tough to speculate off of this thin announcement.