Double-check the fit and alignment of your new battery before sticking it down.

On earlier models, be mindful of the battery data cable and make sure it doesn't get pinched or trapped under the battery board.

If your battery came with adhesive pre-installed on the bottom, flip it over and carefully peel away the liner to expose the adhesive. If your battery did not come with adhesive, apply a thin double-sided adhesive tape such as Tesa 61395 to keep your battery in place.

Carefully position the battery and set it into place.

Press and hold each cell firmly for 5-10 seconds to secure it to the lower case.