Philips Sonicare Optimal Clean HX6829/76 Manual page 32

32 English
4 Remove the end cap from the toothbrush handle. If the end cap
does not release easily from the housing, repeat step 3 until the
end cap is released.
5 Holding the handle upside down, press the shaft down on a hard
surface. If the internal components do not easily release from the
housing, repeat step 3 until the internal components are
released.
6 Wedge the screwdriver between the battery and the black frame
at the bottom of the internal components. Then pry the
screwdriver away from the battery to break the bottom of the
black frame.
7 Insert the screwdriver between the bottom of the battery and
the black frame to break the metal tab connecting the battery to
the green printed circuit board. This will release the bottom end
of the battery from the frame.
8 Grab the battery and pull it away from the internal components
to break the second metal battery tab.