Flip device upside-down so the plastic white board is facing the ground.
Locate the four feet in the corners of the Balance Board.
Unscrew the three 12.7 mm Philips screws from each foot cover.
Remove the grey plastic ring from the actual foot by lifting it up.
Separate the loose foot from the device by lifting it up.
Repeat steps two and three on the remaining four feet.
Unscrew the ten 12.7 mm #1 screws.
Lift off the gray back cover.
Locate the grey battery compartment.
Push the tab on the bottom and lift up completely to remove the cover to the batteries.
Unscrew the two 6.35 mm #1 screws.
Slide the battery case out.