Better fixed than in the trash. I know my family is impressed by my ability to fix stuff. Nice to learn different electronic skills from a very experienced technician.

Very nice work. I had to fix three of these, and in every case the top and bottom were stuck together with old toothpaste. Your video gave me the confidence to go after the shell with a vise to get the bottom off. The top ring was cemented in with old toothpaste, and I had to dig all that out of the ring channel, to make for an easy reassembly. I used a deep socket to push the top ring back on.

My battery drains in 3 days now much quicker than before. I was thinking of buying new one but I guess I'll see on battery replacement. Had my Triumph for over 8 years.

I was fixing a slightly more recent OralB model recently. And it became a future project to finish 😅. I found out I also need to change the pushbutton switch and didn't have one that would fit at the time. Newer models are even cheaper, the cell is soldered to the PCB, no springs. And they are a little harder to take apart too. Made even cheaper if you can believe it 🤷

Very interesting. Last year my old Braun Oral-B type 4728 toothbrush died, same thing, battery didn't hold any charge, so out of interest, took it apart to see what's inside. While turning the bottom peace, somehow the charging coil got damaged, so it was lost case anyway. I guess otherwise I could've just replaced the battery like you did and still use it. Before I recycled it, took some parts from it, like the electric motor, which has metal gear in it, good one as most have just plastic gear. Also the rubber o-ring, spring and maybe some other small parts I have forgotten by now. I then bought new tooth brush which is using ordinary AA batteries that can easily replaced. I was thinking to use re-chargeable battery, but even regular battery seems to last pretty good amount of time as well.

That's a long time for that battery. My Oral B is going on 12 years and I was wondering when the battery was going to need replacing. I guess I have another 10 years to go?

How did you know I was about to do this exact thing with a Oral B? Nice work

I have changed battery in 2 different Braun Oral-B units, but without the sensor in the brush heads. Had to scrap another because it had leaked "toothpaste" and was a total rusty mess inside

Nice, good work! In 2019 I replaced my old Braun and got one that uses a lithium battery, maybe it lasts longer than the older one that used a nickel metal hydride battery.

I want to replace battery, what exactly were the numbers on the one you removed? I’m not sure which one to purchase from Amazon. Thank you

very useful information !!!! that one is fancy with the screen on it LOL

Im surprised to see one of those toothbrushes still going. I replaced the battery in mine around 6 years ago, but after a couple of months the rubberised parts on the handle started to break down and go sticky, so I peeled it all off. Then it began to leak and was dead again for good after 6 months from corrosion.

oh they made it so easy to get that battery out LOL

Does the coil at the bottom to charge the battery have a diode to keep from discharging or not I can make a curcuit of a julethief to a 5v.please let me know.

That toothbrush is impeccably clean for its age. If you take one apart that isn't and where toothpaste has leaked inside, the smell will be from another dimension. 😅

Lol I have the same, but I never liked it. The separate LCD station is cute tho.

Tooth brush, it's a big process to take apart

I always preferred the two stroke model. Darn emissions control legislation! Seriously though l had one of these but lost interest before the battery ever died. My Norelco rotary style electric razor though is another matter. Fantastic little device! Im only on my 2nd one in over 40yrs. I can tell the battery is starting to go. Won't be long.... I hope I'll be able to replace the battery when time comes!

They don't make them like they used to!

24V Lithium Ion is the way forward when repairing these