Dismantling the Oral B Vitality.

Unlike many other models in the Oral B range the vitality's body tapers down to the base.  Therefore  whilst the other models need the base removing in order to access the battery this model requires the top removing.  To do this you will need to grip the plastic spigot that the brush head fits onto and rotate the top anticlockwise.  In order to minimise the possibility of damage to the spigot it is best to shape two small pieces of MDF or softwood match its contours, which can then be held in a vice.  When rotated the top will be forced out of the body by the oblique angle of the joint.

Step 1: Oral B Vitality - Dismantling.

Once you have loosened the top the brush mechanism can be drawn out from the case.  You can then see the battery, which is attached to a circuit board.  The three metal tabs which connect the motor and switch to the circuit board have the  to be un-soldered  in order to remove the board and battery from white plastic inner housing.  This can be done with a solder removing tool or de-soldering braid.

Step 2: Oral B Vitality - Removing the Battery.

When the battery and circuit board have been removed from the white plastic inner housing, the battery can be removed from the circuit board by de soldering the tags.

Step 3: Oral B Vitality - Replacing the Battery and Reassembly.

The battery in this model is the same size as a standard AA cell (50mm long x 14mm diameter.) so you have a wide choice of replacement cells.  In this case I have used a NiMh cell and soldered copper tags on to it to enable connection to the circuit board.
The board and battery are then relocated in the white plastic inner housing and the connections to the motor re-soldered. The spring is then placed inside the charging coil and the outer case aligned and slid down on to the inverted inner mechanism.  Once the top and base are correctly aligned they can be pressed together by hand.
<p>It is the first time I have soldered, but managed to change the battery. My problem is that I cannot get the thing back into the toothbrush. I lined everything up and pushed and pushed, but I just can't get it to close. HELP!</p>
<p>Hey, thanks for this. I just successfully replaced the battery of my 6 year-old Vitality! Few suggestions. I didn't have a pump for the un-soldering, so I just melted the solder and... blew it off the PCB. Then, I didn't want to replace the tags attached to the battery so I just pulled them off the old battery with some pliers and re-soldered them onto the new battery. Saved &euro;20 and some electro-waste :)</p>
Worth noting that the charging base station on the vitality model I have has a hole in the back of it that perfectly fits the plastic spigot, and can be used as a tool to remove the top, instead of using pliers and risking damage to the unit. <br>
<p>Definitely worth noting! thanks for that timesaver.</p>
<p>This is good info thanks. Some Vitality's have a longer PCB which extends further up the handle. These are type 3709 according to the number on the base. Anyway, I found another guide for these with more detailed photos here:</p><p>http://toothbrushbattery.com/guides/braun-oral-b-vitality-battery-replacement/</p>

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