Not on the 13" but on the 15" you need to get the battery out which uses tri-wing screws.
Tri-Wing magnetic bits can be ordered from Christensen Tools, sizes 0-5 R7.90 exVAT each, sizes 6-9 R10.70 exVAT each. Just need a hexagonal driver handle for the bits to fit in which many people already have.
You don't need to remove the battery on the 15" either.