Do not peel the sticker away from the left EMI shield. It will expose the "VOID VOID" lettering that will void your warranty!
Use the plastic opening tool to gently peel away at the "Warranty Void" sticker. Start on one edge, as shown, and slide the tool from side to side until the sticker is removed from just the battery.
a couple of notes my cover came completely off in the beginning step without a problem or broken screws. next i didnt und the wired cabled beside the clicker and it wasnt in the way.