1.set of 2 joy-con battery packs for the nintendo switch system.Attach a battery pack to the joy-con controller to extend battery charge and play time.4 AA battries included
-inserting the batteries
2.press both tabs to remove cover.Insert batteries (-) side first.To avoid depleting the batteries,remove the battery pack from the joy-con,(or remove the batteries) when not in use.Remove batteries (+) side firts
-attaching
3.move the release lever as show,then align the joy-con and slide it down until you hear a click.To remove,pull the released lever and slide the joy-con off