Removing the rechargeable battery warning:
Only remove the rechargeable battery when you are going to discard the appliance.
Make sure the battery is completely empty when you remove it.
To remove the rechargeable battery, you need a flat-head (standard) screwdriver. Observe basic safety precautions when you follow the procedure outlined below. Be sure to protect your eyes, hands, fingers, and the surface on which you work.
To deplete the rechargeable battery of any charge, remove the handle from the charger, turn on the Philips Sonicare and let it run until it stops. Repeat this step until you can no longer turn on the Philips Sonicare.
Insert a screwdriver into the slot located in the bottom of the handle and turn counterclockwise until you see a gap between the bottom cap and the handle (Fig. 15).
Insert the screwdriver into the gap and pry the bottom cap out of the handle (Fig. 16).
Hold the handle upside down and push down on the shaft to release the internal components of the handle (Fig. 17).
Insert the screwdriver under the circuit board, next to the battery connections, and twist to break the connections. Remove the circuit board and pry the battery from the plastic carrier (Fig. 18).