Repeat the battery detaching procedure for the bottom edge of the top right battery cell:

Insert a side of an opening pick 2 mm under the top edge of the battery cell.

Slide the opening pick toward the center of the battery to create a gap for the plastic card.

Slide a plastic card under the right side of the top edge of the battery cell to cut through the adhesive.

If the battery cell isn't fully detached, slide a plastic card under the left side of the cell.