After opening it up, manually moving the plastic cogs and lubricating with some light bicycle oil, I got it working again. I have kept your very good instructions in my web Favourites since I last used them to replace the battery in my Braun Oral B 3000 toothbrush two and a half years ago. Good morning. Thank you for the battery and guide. I need to work on my soldering technique though, its certainly not winning any beauty awards! Brilliant, thanks for this tutorial. Toothbrush now with big battery installed and charging! The first piece to remove from the internal assembly is the power switch plate. This guide is for educational purposes only and is offered without guarantee or liability. At first I saw this as a challenge but actually the instructions make the job of replacing the battery quite easy. Imho, NOTHING that is battery-powered should have a design that requires an extensive teardown in order to replace the battery, be they toothbrushes, mobile phones, laptops. It has one tabbed AAA size NiMh cell 450mAhr, replaced with same size cell, 850mAhr. Do use a very small soldering iron tip. I replaced the battery with the longer battery. Thats another one saved from landfill the 1400mAh 4/5 AA replaced with a 2700mAh full AA. Hi Jim, it sounds like it could be water ingress that has damaged the motor. Many thanks Ionic. bruan Thanks for all the useful information. I think the thing I enjoyed most (other than restoring my toothbrush to working order) was the feeling of fighting back against that damned planned obsolescence!

Stand the toothbrush tip-first in hot water (60 degrees C) for 5 minutes to soften the plastic and make the ring easier to remove. I have successfully replaced the battery in my Professional Care 3756 with the optional longer battery and like other respondents would like to mention the the very helpful Ionic Industries detailed guide. In general, bleeding should stop after a few days. The second one took about 15 minutes including cutting away for the larger battery. Klaus. The pressure sensor LED will only illuminate if the wires are connected with the right polarity.

You can use the very tip of the scissors to snip in part of the way but this relies on the scissor blades being sharp enough and tight enough! Along with another repair of hands, a multi-meter is your friend here!

Spot on, run the battery down way beyond the flashy LED nag, be cruel to be kind. The new battery had enough power to run the motor so I know the batter was soldered on properly. Ive just got my battery, Im going to replace it this week. It works without it as well. Is this possible to fix? More businesses should be aiming for reuse/repair like this, rather than throw away and buy new. Oral-B 1000 CrossAction Electric Toothbrush, Black, Powered by Braun, Oral-B Pro 500 Precision Clean Electric Rechargeable Toothbrush, 1 Ct, White, Oral-B Vitality Flossaction Rechargeable Electric Toothbrush, Pink, Electric Toothbrush, Oral-B Pro 7000 SmartSeries Black Electronic Power Rechargeable Toothbrush with Bluetooth Connectivity Powered by Braun, Oral-B Genius 7500 Rechargeable Electric Toothbrush, Rose Gold, Oral-B Pro 500 Sensitive Gum Care Rechargeable Electric Toothbrush, Powered by Braun, Oral-B Pro 1000 Power Rechargeable Electric Toothbrush Powered by Braun - Color Shipped May Vary (Bl, Oral-B Pro 1000 Rechargeable Electric Toothbrush, Pink, Oral-B Genius 6000 Rechargeable Electric Toothbrush, Rose Gold, 1 Ct, Oral-B Smart 3000 Rechargeable Electric Toothbrush, White, 1 Ct. I was quite careful, did not do too much desoldering, dont have the pressure sensor in my model 3754. Any ideas? So chuffed was I, that I bought another from you a fortnight ago, and Ive just done, unknown to her, the wifes, green LED happily blinking away. Hi For me the desoldering took much, much longer than putting it back together. Hi Dave, I think the first thing to do would be to run through our trouble-shooting tips, particularly the ones about the soldering and coil wires. Its happily charging. I just reassembled my toothbrush after following your instructions. P.S.

Didnt charge. If I can do it anyone can. The red charge indicator light starts blinking when the rechargeable battery is low.Pressure SensorFor optimal brushing results, Oral-B Professional Care has a pressure control feature to help you brush gently. Any damage to yourself, your toothbrush or anything else is entirely your responsibility. Just succeeded replacing my battery! A tip from my dad, who did the soldering work: it can help to desolder the coil first, so the black plastic wont melt when you desolder the battery. Any act carried out by yourself is entirely at your own risk. Now, if only you did a battery replacement for the Philips Sonicare flosserits already taken apart, just need a battery. But still not charging & no light. The green charge indicator light flashes while the handle is being charged, and when the handle is fully charged the green charge indicator light shines continuously. Many thanks for your guide. I charge at full and lasted 10 days again, with the same battery, but the second cycle lasted 2 The toothbrush doesnt allow to charge the battery fully if you dont disconnect it from the circuit. Should it persist after two weeks, please consult your dentist or hygienist. Hi. Finally, remove the battery from the toothbrush. At first, the battery charged then very quickly the charge went dead. Hi Martin, It sounds like either the battery is not getting a full charge or that the battery is failing. Desoldering braid might also be useful for this. I modified the battery carrier following your instructions to take the longer battery and reassembled with no problems and no glue required. I followed the instructions and cut across first, this required enough scissor pressure to start the cut which then cut right across. The hot water tip was good and saved my base clip. It means we dont need to take the charger in the camper van anymore. I can add a few pointers to the very easy-to-follow instructions. I did leave the toothbrush on the charger for 24 hours but no joy. Then unclip the switch and put it to one side. For me it was not an easy job, but my toothbrush is running nicely again. Not the slightest motor sound. I tried switching it on again after only a moment and the motor now worked, so maybe the charger reset something. Great stuff. Wonder how long itll take for her to cotton on , it was down to a 3 day charge cycle! 3756/54. Maybe there is a way to bypass it? I would not, however, recommend this as a first attempt at repairing anything. Also useful, a big blob of blu-tak to bed the chassis when soldering. Some times I can only get one or two, 2 minute brushing sessions. Everything went according to plan and I am now getting the full use of the higher capacity battery. I just finished installing your longer battery into our 3756. Send us an email if this doesnt get you working. I think if you were careful, the board and coil could come out together?

Any suggestions.?

A long stuttering sound indicates when the dentist recommended 2-minute brushing time has been reached.Both timers memorise the elapsed brushing time, even when the handle is briefly switched off during brushing. Thats fixed my toothbrush, now to do the wifes. The battery itself seems to be charged up properly. The Professional Care 3000 rechargeable toothbrush has a waterproof handle, is electrically safe and is designed for use in the bathroom Any ideas, please? The melted plastic near the charging coil is not a problem, but both coil wires must be soldered to the PCB and there cannot be any breaks between the solder points and the coil itself. When put on the charger, BOTH the red and green lights are blinking fast. Second, is there specific guidelines to ensure max battery life? Also, the red light flashes (the one that indicates the battery needs recharging) after every use even though the battery seems fully charged. Knowing you repaired the brush yourself makes toothbrushing so much more enjoyable! I was able to resurrect 2 3756 brushes that were all but dead. 1 x Professional Care 3000 rechargeable toothbrush, 2 x Precision Clean brushhead - Surrounds each tooth for a complete clean, 1 x ProBright brushhead - Rubber polishing cup for naturally whiter teeth, 1 x Sensitive brushhead - Softer Bristles for sensitive teeth and gums. It should show signs of life before re-assembly. No matter. First I got a false green charging light indicator, then re-soldered the coil wires more aggressively and now its working like new. braun vguc Note that the ring is stepped so you might need to press down into the soft coloured surrounding material to lever the ring from underneath. The charging indicator would keep flashing as normal, so it appears as if its charging normally. I followed the guide and replaced with a larger battery. I tried the battery replacement in one of my Braun 3756s some time back and it didnt work, even though everything looks OK. Today I did the second of the pair and this one appears to be working fine. So satisfying to renew this battery. It seemed a daunting task to replace the battery. Thanks a lot for this excellent initiative and website to fight reckless consumerism ! Push there with a small screwdriver or the like while pulling back in the charger. We have a new guide to opening and repairing the Type 3766 and 3767 brushes in our list of battery replacement guides. It sounds like a bad connection to the battery. This makes it more difficult for the toothbrush to be repaired (see below.). If you use a small enough amount the base can still be removed next time you want to replace the battery. Cheers, the tags on my battery were long enough, even with the bends so I am happy I kept the bends.

Great to hear about your repair Steven, and thanks for the tip about the plastic lugs at the ends of the coil wires. Ive just successfully replaced the battery in my 3756 toothbrush (which was so poor that I was having to charge it every night) with the larger one. During the time I was fixing it, by manually spinning the plastic cogs, the motor seemed to warm up quite a bit. (will measure voltage when I can) Any thoughts? Terms of Use I can trigger the motor if I hold the battery so that one pin touches the motor outing and one pin touches one of the motor pins So I guess I either I heated something up or there is an excess of lead/tin somewhere. Anyway, it was the first time for me I used a soldering iron and the complexity was like 4 on a scale 1-10 :). The Professional Care 3000 rechargeable toothbrush has a waterproof handle, is electrically safe and is designed for use in the bathroom. However using the toothbrush leads to the flashing pressure sensing light situation again so that the toothbrush will keep running (for a relatively long time such as using it for a week or so) until the battery gets drained again. To start off, remove any brush heads from the top of the handle.

This is documented in detail below along with lots of pictures. In retrospect, Im not sure that the coil needs to come off. 2100mAh are 2100mAh, it is possible that it only lasts one cycle? If it hasnt already fallen out remove the spring from inside the coil in base of the handle and put it somewhere safe. Speed seems fine on first use after full charge. Just replaced the battery in our 2 toothbrushes. I have thrown away two brushes in the past, but no more! I now have an almost new toothbrush with an elongated battery life! Many thanks for the excellent guide and replacement battery. Very pleased with the result thank you again & keep up the good work. I could have bought a new toothbrush, but exchanging the battery and doing some handwork was/is much more fun!

Sounds like you got your beard trimmer up and running again. You can also try leaving it running until it shuts off then give it a full 24 hour charge. Your enemies are years of old toothpaste gunge & a dull brain cell. I could not fix it so I did not apply it again. Shipping & Returns I have just fitted an upgraded battery to the older of the two, and it all seems to be working fine. Makes a pointless hole requiring a tiny bit of Araldite or the wet stuff will get in. However, I noticed that red light was blinking when I pressed the button on the PCB (before re-assembling) but I do not see it when I pressed the button after I re-assembled. Nestor. It the pcb version with sop-20 housing chip so it differs from yoursmaybe older but its an 3756 model. I replaced the battery a few years ago with the larger type and it worked well. I didnt need the solder sucker or copper braid, just some flux & the original solder which probably avoided a number of problems. The + end of the battery is closest to the motor. Kim. Does the replacement battery has memory? If you have sensitive teeth and gums, Oral-B recommends using the sensitive mode.Box Contains: PLEASE NOTE THE PLUG ON THE CHARGER IS A TWO PIN PLUG SUITABLE FOR A BATHROOM ENVIRONMENT. I have now repaired my toothbrush (since my wife got a new one!) Well done. The resistence of motor in dc is only 0.16ohmi. Thank you for your feedback Jan! I have checked. Hi Ill do a bit more experimenting to see why the charging circuit is apparently not working (the time pressure is off since my wife insisted on having a replacement toothbrush!! My question is, its due to the quality of the battery? Another one saved from the landfill! Thats when I would have to allow uninterrupted charging. I re solder, now red light blinking only when I press the power button. Have a look through our troubleshooting tips here. I did put mine into a standard battery charger for a few hours as I knew the old one could take 20+ hours to fully charge. Excellent and clear instructions, both visually and written step by step. Anyway. As considerable force is required to cut out the battery carrier to take the larger battery this is easily done be warned! Thanks again! The spring might fall out so dont lose it! The internals are made of a very easily melted plastic and it is looking a little messy now that it is on its second replacement battery. But finally I was able to proceed as instructed. Mine is 1mm. If the charging light is not illuminating please read the help available on our support page. And more, it works well. However, its more likely with yours that one of the charging coil wires has come off. Philips plainly designed the innards for two AAA cells, plenty of room inside so two paralleled up would go in easy. The motor is moving the gear from side to side but Im not getting any movement above that. See the picture below for (left to right) replacement 42mm battery, original 42mm battery and replacement 49mm battery.

Before this I checked the battery voltage on the tooth brush at full charge (1.386V) and when empty (red light, 1.232V). I have successfully changed the battery and the tooth brush now functions just like new. Thank you for all the photos and details you give to replace the battery. Thank you.

It should be above 1.0V to run. ToothbrushBattery.com 2022. Yes the pressure sensing switch is connected to the PCB very close to the positive solder tag from the battery so these can easily touch each other. However, it would only run for about 4 minutes (and rather slowly at that) before running flat and flashing red. You mention that youre looking for a battery for your Sonicare flosser. Ive replaced my battery yesterday and at first I was a bit down because I thought it didnt worked no charging light, looked dead. In summary, an excellent set of instructions that achieve the end result in a very easy to follow manner. Chichester Brilliant, thank you for a great guide, instructions clear and simple. The second lasted 2, the third cycle 2 I redo the whole work, I disconnected the battery and weld again. When I assemble it and place it in the charger the light flashes but every 4-5 flashes the flash is weak or like it does not have contact. Any ideas? It still works of course but I am wondering if original plus two long replacements is a fair life for one of these. There could be a short circuit somewhere on the PCB caused by a stray blob or whisker of solder. I have tried fullyj charging and then letting it run to a stop (about 30 minutes) this short life is repeatable. Brilliant instructions however the flashing Red Battery Flat is flashing, but no green charge light when plugged in. Fantastic. I could not remember which wire was on which soldering point, tried it randomly and luckily it worked. Thanks again! Hardest bit is getting the case apart, there are two major clips 40mm up from the USB socket to free, a plastic guitar pick is essential. But after a week, the battery would become drained, to the point where the motor would no longer operate/move. I replaced this battery about 3 years ago and has worked well up until lately. Alternatively you can use pliers with tape inside the jaws to stop them marking the ring. Soldering and de soldering frightens me to death. Great thing! Im happy to say my toothbrush is now back to full function. I bought a new longer version from yourselves and installed it according to your excellent instructions. Great to hear about your successful repairs Glenn, and thank you for the tip regarding desoldering order. I found it a bit fiddly but I did the upgrade to larger battery and it all worked first time.

Unclip the carrier for the pressure warning light wires and gently remove the carrier from the top shaft (arrowed below) then put it to one side. Thanks for the guide. I mean, the old one was 1600mAh. I appreciate the quick shipping to the USA and will be purchasing another battery for an older model we have sitting around. For more information see our Privacy Policy. I was stumped for awhile It seems to charge normally, with the light turning off upon charge completion. I looked at the online copy of the instructions, but there is no info on a faster blinking. All good. Unfortunately in trying to remove the charging coil the wire to the PCB has broken. Many Thanks. I agree with the other comments a solder pump was much easier to use than desolder wick. If its over 1.2V the motor should run. great guide! I found the plastic of the battery holder to be harder than I expected and, although I removed most of the webs with a scalpel, I found a Dremel was good at removing the last pieces. Just replaced battery supplied by you using your very clear instruction guide. What can I have done wrong? It already had the long battery so I did not have to cut out plastic. If youre measuring continuity between the two motor terminals it is normal that this will show as a short. With the pressure switch removed the light will stay on all the time, so check that the top end of the pressure switch is clipped correctly in place. I should of said it the plug symbol light which is flashing red not the battery light. The new battery however will not charge, no green charging light. So, I checked the troubleshooting guide (this helped too) and reopened to check the soldering points. How do I take it apart? Strange! oral 1000 pro toothbrush professional care shavercentre oralb canada making it extremely hard to connect both to the circuit board.). Replaced the batteries on my wifes and my toothbrushes and they work! I didnt need to replace the battery, but took it apart and saw that one of the charging coil wires had broken away from the solder point. I would strongly recommend using a desoldering pump as stated in the instructions. I checked and resoldered where the + battery connector is on the side of the pressure connector soldering. You can always remove the pressure switch and see if the brush works correctly without the switch plate installed. Id suggest re-fitting the old battery and checking for shorts on the PCB a common one is the pressure sensor switch (if fitted) connection touching the positive battery connection. Not a lot to add to all that has been said before. Rick. Are you able to check the voltage of the battery? Hi Kim, great to hear about your successful repair! Having checked the battery was supplying power, I placed the handle on the charger and the green charging light started flashing. I was having to cycle 2 old toothbrushes that both only gave a couple of days use. The battery in my toothbrush was appearing to charge but would die almost immediately. Eg. Something could have moved or got damaged when soldering in the new battery. Remove the inner workings of the toothbrush by pushing the shaft in from the top. Bought your 2.2AHr NiMH AA and followed the instructions above, didnt need the solder sucker or wire braid Id got to help with the job, but did use copper-pipe plumbing flux to very successfully rejoin the existing soldered parts. is the way one solders the thin copper wires of the pressure device important? Therefore, when the initial replacement battery stared to show signs of ageing a month ago, I didnt delay in ordering a new replacement; knowing that it would be an easy task to return the toothbrush to full working order. Thanks again for the wonderful site! Hi Jon, when you press the button do you get a red flashing light? Sometimes it takes up to an hour before the toothbrush even acknowledges that its charging! I hope it would work. The only hiccup was when I had reconnected everything, nothing powered up. Healthcare4all are medical equipment suppliers in the UK, specialising in respiratory products such as nebuliser machines and pulse oximeters, for conditions such as COPD and asthma. (Only thing Ill watch out for when buying batteries next time is the orientation of the soldering lugs. Ill test it! I have since bought one for a couple of pounds. I have a problem where the pressure light is on all the time. until even the red pressure sensor light has no power to flash anymore). Youre right that theyre not part of the induction charging circuit. Customer Support I believe the two beads are a catalyst to absorb any gases (i.e. You can try leaving it running continuously with no head attached after oiling both ends of the motor shaft, to see if that helps. Privacy You people should be honoured with a Queens Awards for Enterprise and manufacturers who do not commit to the Green Agenda should be levied with crippling sanctions or put in prison IMVHO. If this just a replacement battery? Thanks for the help! If the pressure sensor light is permanently on there is probably a short circuit somewhere. My wife is jealous as her younger brush doesnt last that long! Glad the toothbrush repair went well Brian! can I use an off-the-shelf double A rechargeable battery with tabs? I lost one but the other was fine. Another toothbrush is kept running! I did not bother and had no problem replacing the battery. I bought a battery from you a few weeks ago, the larger capacity one, I followed the excellent guide, and in no time, the brush was back on its base, green LED blinking away. Just wanted to say thank you for the guide. Over the years the motors can wear too, and can then draw higher current from the batteries which runs them down faster. If fitted, locate the solder point for the pressure warning switch (arrowed below) and desolder it. I purchased a battery from you for my 3756.

Nothing at all. this time absolutely remembering the correct battery polarity! But.the difference now is the battery reaches a full charge. Measure your battery and if it is 42mm long you might have the option of fitting a longer battery instead. Ionic is providing a valuable service to consumers and the environment THANKS! Hi Antonio, it could be a faulty battery but run through the checks on our toothbrush trouble-shooting page and see if that helps. But interestingly, once the toothbush is turned on, the unit would behave normally no flashing pressure sensor light when normally operating the motor. Just posting this here in case sombody else has the same issue. Could you please help. However, after 24 hours, when fully charged, the toothbrush does not work at all.

I successfully rebatteried my wifes fancier Braun last year, so this is beginning to become a habit for me, thanks to Ionic. Replacement battery delivered very quickly and is not to expensive. Since its not that important, im just going to desolder the connection to the light. 1. I dont know how. I hade some problems with desoldering the battery from the charger coil. So Im very happy with my first attempt. Dont do as I did and put the battery in the wrong way round! Its 2022 and we can repair an electric toothbrush with thanks to TBB.com :-}. God bless you! Youre welcome James. All I get is the flashing red light when the power switch is pressed. oral triumph professional care braun toothbrush charger electric



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