Sorry, I did a cut & paste, and for some reason it would only show as dots. i was trying to say:
Very nice! But if you have something else that could/should go in the 3rd hole I have heard somewhere (nyuk nyuk) that you can flip the jackplate 180° laterally & 180° longitudinally, so it's an outie rather than an innie, and you can put the battery in the cavity & still have the jack there.
Peter (who seconds Bill's "caiman" suggestion; good one, Counselor!)