Translating step 6
A quick twist and the battery connector is disconnectored.
Despite the Coriolis effect, for screwdrivers it is still righty tighty and lefty loosy—even down under. So for those who were wondering—yes, we still twisted to the left.
Once inside, we find, as we hoped, Phillips screws. We're glad Apple limits the inclusion of Pentalobe screws solely to the bottom of the rear case.