Introduction

The battery can be bought either on ebay or amazon. Verify with your old battery before purchase as Oral-B uses shorter battery outside of USA. The one sold in USA is 48mm L x 17mm D. The other size is 42mm L x 17mm D.

There are couple YouTube video which can help you visualize also

History: I have bought that toothbrush in 08/25/2009. I have replaced the battery in 07/07/2012. I am replacing again on 08/30/2014.

Remove plastic ring by prying it off with large screwdriver. Be careful not to damage rubber handle top or the ring. Remove plastic ring by prying it off with large screwdriver. Be careful not to damage rubber handle top or the ring.
  • Remove plastic ring by prying it off with large screwdriver. Be careful not to damage rubber handle top or the ring.

Add Comment

To remove the base of your handle place triangle shaped knob on your charger into hole at the bottom to unscrew and remove a small plastic screw. Turn clockwise You might use a flat screw driver to help separate the bottom
  • To remove the base of your handle place triangle shaped knob on your charger into hole at the bottom to unscrew and remove a small plastic screw. Turn clockwise

  • You might use a flat screw driver to help separate the bottom

Add Comment

Do not pull the coil ring as the wire will break away from the the circuit board With flat screw driver, slide down along the case. Gently push both plastic tab toward the center
  • Do not pull the coil ring as the wire will break away from the the circuit board

  • With flat screw driver, slide down along the case. Gently push both plastic tab toward the center

  • To help you removing the inner part, you can insert another screw driver here and pull gently toward you while you try to free the plastic tab

Add Comment

Be careful not to break those wire as they are very fragile Use a T6 screwdriver to remove the screw You can also grease the gears
  • Be careful not to break those wire as they are very fragile

  • Use a T6 screwdriver to remove the screw

  • You can also grease the gears

Add Comment

Pull the plastic clip and lift the LCD screen a little bit on both side so you can free the LCD screen from the bottom
  • Pull the plastic clip and lift the LCD screen a little bit on both side so you can free the LCD screen from the bottom

  • After you have remove both plastic clip away from the circuit, slide the LCD screen up. You will fee the LCD screen from the top

Add Comment

This is the positive tab
  • This is the positive tab

  • This is the negative tab

Add Comment

Remove the spring
  • Remove the spring

Add Comment

Remove the battery tab from the circuit board Remove the battery tab from the circuit board
  • Remove the battery tab from the circuit board

Add Comment

Make sure you respect the polarity when you are placing the new battery (see step 6)
  • Make sure you respect the polarity when you are placing the new battery (see step 6)

  • You might need to trim the battery tab

  • Solder the battery tab on the circuit board

Add Comment

Conclusion

To reassemble your device, follow these instructions in reverse order.

8 other people completed this guide.

Shinn Chyang Chen

Member since: 09/14/2011

1,847 Reputation

3 Guides authored

5 Comments

Tip: The 8mm Hex Bit (from the macro bit kit) can replace that silly triangular plastic tool molded into the power adapter.

While trying to do this "repair" to replace my battery, the bottom screw was in so tight that I stripped out the plastic tool.

Lacey Clifton - Reply

I have just replaced the new battery on Triumph Professional Care 9000, followed all of the instructions. I charged the battery to full 100% but when I switch it on, the motor doesn't turn, it's just dead silence. The LCD displays correctly with different brushing modes but the motor and brush is not turning. I'm wondering what steps I may have missed and if you can provide some guidance on how to fix this problems. Look forward to any helpful hints and suggestions. Thanks in advance.

alfredchwong - Reply

You can try to measure the current with a multimeter on the motor when it is turned on.

Shinn Chyang Chen -

To get the screw out on the circuit board, I used a small screw driver, just had the grind it slightly so it would fit into the torex. Hardest part of the whole operation was getting the small blue ring off. The battery I bought was about 3/8 in longer than the orig, course I didn't know this till I opened the case. I used it anyway. Where the spring is used to tension between the battery and motor, because this was 3/8 in smaller I had some neoprene that I cut in a circle and inserted. I still used the plastic piece to hold the neoprene away from the motor shaft. Time will tell if this is an issue.

Overall very good instructions., and things went as described.

Tks Jack D

jack demille - Reply

It is a Ni-MH battery, NOT LITHIUM. Check also the linked video for confirmation.

Be careful!

Olaf Marzocchi - Reply

Add Comment

View Statistics:

Past 24 Hours: 42

Past 7 Days: 226

Past 30 Days: 985

All Time: 20,540