Ep 33 Electric Toothbrush Battery Replacement/Upgrade

[@nospammike]

Many thanks Simon! Recovered 3 of these Braun and they used to open at the base. Fitted an NiMH after opening at the top as per your video, and it didn't run. Few mins on the charger, back and working. Another gadget saved from landfill. Cheers!

[@PowerOn-]

Good work Mike, keep it up!

[@richardappleton9544]

Thanks so much for this very helpful procedure. I have just replaced the original 700mAh NiMh battery with at 2200mAh NiMh. I found the new battery on e-bay and it had the solder tags pre-fitted, although they needed a little trimming prior to installation. The whole job took me around an hour, I could probably have done it quicker but as this was the first time I had attempted it I exercised a little caution along the way, and also cleaned the brush before re-assembly. Well done Simon!

[@PowerOn-]

Well done Richard. Another toothbrush given an extended life 😁

[@elmerm9327]

Hi, what voltage did you go for ?

[@joeroganpodfantasy42]

700 NiMH to 2000 is amazing

[@tekboyg]

Just did my one! This has bugged me for ages, so good to keep using a perfectly good toothbrush! Down with planned obsolescence!

[@PowerOn-]

It's definitely a "first world problem" but I agree with you, it's great not to have to recharge the toothbrush every few days

[@ib9rt]

@@PowerOn- I use the one that takes two disposable AA batteries and put two Eneloops in it. That way I never have to worry about an internal battery wearing out.

[@__________f9433]

Yeah I have same model. to be honest it’s amazing electric toothbrush the quality that can last for so long. Unfortunately for me. I’ll just have to spend the $37 to buy a new one.

[@eolguing]

I just did it today. I couldn't solder the tabs to the battery, but just used masking tape and that's it. It is working again after almost 8 years of storage.

[@MemerDad]

I’ve had mine for about 11 years and only a few weeks ago it started acting up.

[@ivokouters3415]

I recently replaced the battery of my toothbrush with the help of this video. I used to get 2-3 days of juice out of it. After replacement I've been using it for more than two weeks now without recharging! Thanks a lot!!

[@magicdave93]

What I cannot understand is why they don’t make them so you can just replace the battery like you can with a light. Great video buddy 👍🙂

[@Arthurk346]

to make people go and buy a new one

[@anelkobalic1574]

So you buy a new one. It is a world of consumerism mate

[@lindsay5985]

@David Thompson, if they had invented flashlights this millennium then you wouldn’t be able to replace the batteries! You would simply have to throw it away and buy a new flashlight every time the battery died. Built in failure and prevention of service and repair should be outlawed in my opinion.

[@lindsay5985]

So we should continue to make rubbish that breaks - for factory workers? I think it’s better to make products serviceable - then people can be employed to service them instead of making even more crap that breaks and has to be put in landfill.

[@Ermes17]

Because they are a little bastards

[@yfw888]

Very helpful and great video to demonstrate the steps. Bear in mind that don't try to solder the terminal on the battery, as explosion may happen due to overheat the battery seal(s). Simon used correct method/tool (spot welding) to do the great job. Thanks Simon.

[@PowerOn-]

Glad to be a help

[@bobsoft]

@@VIKINGNATURALSOAP No, and soldering is fine also if you are not heating it up too much. Clean the ends with sandpaper, use some flux and a large soldering tip and tin both surfaces you will be connecting

[@teck49]

Ya, what if you don't happen to have a battery spot welder handy???

[@jhamm15]

Just did this to a couple oral-b’s that had old ni-MH batteries. video was great, thanks!! I did not have de soldering bulb so I attached a straw to a vacuum which sucked solder right up! Also vaseline/petroleum jelly works well as a flux replacement!! 😎

[@PowerOn-]

Lots of great tips!

[@uranium5694]

Thank you so much for this video! I replaced the battery in my toothbrush! Feels so good that in this case I'm not a victim of planned obsolescence!

[@yeehawongi4920]

Hi, which rechargeable battery you now have it in the toothbrush? I would like to have mine replaced as well.

[@MemerDad]

It’s really hard to call it planned while it works for about a decade. I used mine for over a decade.

[@CrackedPi]

Batteries just go bad over time

[@MemerDad]

@@CrackedPi exactly

[@riverrage]

@@CrackedPiWhich is why it should be replaceable.

[@terrywills6093]

Many thanks for such a clear video. I've been wanting to replace the battery in mine for ages, but didn't want to break it taking it apart. Gone from the 700mAh cell that never worked well , even from new, to a new 2800mAh battery that lasts for ages!

[@PowerOn-]

Well done Terry, I find that the higher capacity cells can work for a few weeks untill a charge is required.

[@musicantd]

Doing this today. I replaced the battery before but that one's almost totally gone. 1/2 the time I turn it on it only has 1/2 second action. Other times it's good for 2 minutes and dies, right at the end. I'm replacing with an Eneloop this time, figure it will last way way longer than the NiMH replacement I had in there before. The original was a NiCad. I did something similar with my Oral-B Triumph toothbrush around a year ago, replaced that one's battery with an Eneloop, it's been going strong ever since. Not having a spot welder, I used a regular solder iron. The connection seemed less than reliable but so far so good. Yes, down with planned obsolescence! Thank you for this excellent video. FYI, all, another video showing similar fixing of one of these types of battery operated toothbrushes advised wiping the outside of the unit dry after each use, saying that the death of these is frequently due to water seeping inside. I towel off mine after rinsing these days. So, after writing the above I started the process of changing the battery for an Eneloop AA that had a decent charge on it. It succeeded but there were a couple problems I had to deal with. I removed the battery that was in there. It was a NiMH I'd bought off the internet and it said on the side that it was 2200mah capacity. Of course, that is very doubtful. I then tested its voltage and to my amazement it was quite high, over 1.37 volts. But the toothbrush only worked sometimes in the last 1/2 year or more and would rarely work at all after 2 minutes and lately it wouldn't turn on for more than 1/2 second. So, what could be wrong? I decided to put the Eneloop in there anyway. I tore the tabs off the battery that had been in there and soldered them on the Eneloop. The one on the negative end wouldn't stick, so I roughed up that end of the battery using a dremel. Then the tab stayed soldered on. I assembled the toothbrush but encountered a problem in that the shaft at the top came loose from the rest of the internal unit. I persisted and managed to get it back on, completed assembly. It did not turn on, as Simon experienced and I put it on the charger for a couple minutes and then it turned on. And boy did it go! It had far more power than I'd had from the other battery and after a 2 minute usage it kept going like it never wanted to stop. I have it on the charger now, mission accomplished. I have no idea why it wasn't working with the previous battery. Maybe that was defective even though the voltage looks good using a multimeter.

[@korishan]

Nice upgrade :) The onboard controller IC needs to be externally energized after the battery is removed. Once it's turned on, it then turns on the fet to power itself from the battery. This is partially for shipping purposes as the battery should actually not be energized during shipments. That's why they say "Charge device before using" ;) it really just turns the unit on fully. Thanks for the tip on the spot welder and being resistive welding. There's another user who was having issues with that and I passed on the info and see if they get better results now.

[@PowerOn-]

Thanks for the reply and explanation Korishan, it's nice to have the gaps in my (limited) knowledge filled! As for the spot welding I see lots of videos with people pressing really hard and it really makes the weld worse not better.

[@kb24theMVP]

Hi What do you mean by externally energized? Do you mean I should put it on it's original charger for it to work? Thanks in advance

[@djbradz7453]

@@kb24theMVP yes

[@nickevans417]

Thank you very much Simon, very useful! I had the same problem with not turning back on but when I had done nothing more than remove the insides from the casing, no desoldering, nothing. Happily, putting it on the charger for a minute worked. This device obviously doesn't like any tampering! I thought I must have cracked the PCB at first. Mine wasn't a battery issue but the underside of the rubber on/off switch cover was worn away, making it hard to turn on when assembled. A bit of silicone sealer has filled the gap and will hopefully work when it's cured. I do love fixing stuff.

[@user-px6zb8kk5j]

Good man. Great to see videos like this. I try to fix everything I can, but don’t always know how. The hardest part can sometimes be diagnosing a faulty part or component

[@beemergb]

Brilliant Thank You !! Just unscrew it and found the fault ! The rubber that you push down onto the on button had a split in it ! Inside full of sticky toothpast ! WD cleanup bit 0f grease on the gear in the head !AND Ive got my lovely leky toothbrush back running again ! Thank you again from a very white smile !!🙂

[@PowerOn-]

...even I might be thinking about a replacement when something like that happens! 🤣 Anyway, good on you for resolving the issue. Maybe the split rubber could be resealed, possibly a smear of silicone sealer if you have some?

[@GamingPlanet8291]

Excellent, i had mine now for nearly 10 Years and now it was time for a new battery! Grat tutorial.

[@PowerOn-]

I hope the 'upgrade' goes well!

[@SteenPedersen]

Thanks, just did this. The connector on the original battery was broken, thats why I ended up here. I didn't know how to open the case :-) Now the toothbrush has been repaired and upgraded. The original 700 mAh battery has been swapped with an Ikea 2000 mAh battery :-)

[@PowerOn-]

Well done Steen. Another upgraded toothbrush!

[@harsancatalin]

Nice video. Just changed a battery on my toothbrush and I'm so excited that in The end guided by The steps you showed IT works again. Thanks

[@landydoc]

Thanks for your tutorial. I could revive the brush. That is the sort of sustainability I really like.

[@LeadingMotive]

Thank you, just got mine working today again, the battery was completely gone after 10+ years. The soldering spots are pretty hard to get desoldered, I recommend adding some fresh solder on top first as it makes desoldering easier. About charging times: The charger's specification is 1.3 Watts. Assuming the old battery had around 1.3 Volts, this means it charges with 1 Ampere (1000 mA). If the new battery holds 2000 mAh then a complete charge would take approximately 2 hours. As we don't know whether the electronics stop the charging at any point, it is probably advisable to not charge much longer than that.

[@PowerOn-]

Whilst I didn't check i'm pretty sure there will be a charging chip inside controlling the process, particularly the termination of charge. Also, the charging rate will be at least 20-30% below the input power as wireless charging has greater losses compared to wired. Thanks for taking the time to comment.

[@LeadingMotive]

Good point, I just realized there is a loss due to induction charging. Also there's heat losses. Yesterday I found the instructions leaflet and it states 16 hours of charging time, and that's for the small 600 mAh battery! So there must be some function to slow down the charging. I assume that's because most people leave the toothbrush in the charger anyway.

[@tonicipriani]

I'm not sure what type of solder they used, but it won't get wicked up properly with the copper braid. And there was a LOAD of solder on it already, the factory solder was pretty bad on mine, was like a ball and had a load of flux spilling out when heated. Ended up sticking a small screwdriver behind the board and solder away until it popped out.

[@biomorphic]

I had the same problem, I used the tester, and it was OK. So I did what you did, I put the toothbrush under charge. Unfortunately I watched just half of your video, so I didn't know you had the same problem. When I finished watching your video; it gave me hope. By the time the video was over, I checked the toothbrush: it was working. My battery is much bigger, I used a 2700 mAh battery, so I had to cut all the plastic that holds the battery, and just leave the black part at the end. With a bigger battery is not necessary, it just stays in place. The charge should last much longer. The battery I bought came with the connectors, because without that solder you have, it's tricky soldering a connector to the battery, very tricky.

[@MrPye]

Just done mine. Had two to re-battery but one did not have the access using the charger peg and the top broke off when twisting it. However, I have got the other working again using the charger route and now have a spare PCB/motor should it be needed in 10 years time! Thank you for the video, and for those who pointed out the charger trick

[@abdoskitchen5643]

Good job Simon and thanks for the video upload. I have the same brush and before watching this video I was trying, unsuccessfully, to open it from the bottom.

[@PowerOn-]

Thanks for the comment Abdo. The technique for opening is a little counter intuitive. I'm glad you found the video useful.

[@Kangaroo_Caught]

I bought a Pro 2 unit pack years ago, only used 1 handpiece until it seemed to be down on power and charge duration. Put that aside for about 5 years until the 2nd handpiece slowed similarly. Was looking for exactly this type of information. Charged the original up and it's still working well another 3 years later. Original battery.

[@AtmaS]

Thank you for sharing. An informative video to replace a battery. Video gives me the confidence to replace a battery. The difficult part is to get the cell and motherboard out of the casing.

[@PowerOn-]

Thanks for the comment Atma. Good luck!

[@unclemunter]

Planned obselecence averted! Thanks, just did mine now 😁

[@grgmetube]

I followed your video to replace the battery. I was able to get the same battery at a local Jaycar store. The toothbrush is working and charging fine again. When I was unsoldering the negative battery terminal from the circuit board, I lifted the pad off the board at one edge. I was using too small sized soldering iron tip and applying too long on the board because the solder would not melt. When I changed to a thicker tip it melted quickly with no further damage, Thanks for your video.

[@rosecastillo-favio4412]

thank you, just got one, it is hard to get open for me, but thanks to you I got it . Much appreciated!

[@asinbluesky]

YEESSS Great video! Crucially including the trick to restart the chips by putting the toothbrush briefly on the charger. I had followed a different video previously, which missed this bit out, and assumed wrongly I had overheated or blown the board. Just done two units upgrading from 700mAh to 2600mAh so should get mega time now :-)

[@Channel-tr1hx]

Seriously it had 700mah????

[@chrisharris3414]

Well done Simon, thanks for the video, it worked for me. To think I was going to throw the whole thing away just because the battery died!

[@PowerOn-]

..and well done Chris!

[@steamy_creamy423]

"Toothbrush manufacturers hate him" find out how this man got 5 more years out of his toothbrush-

[@bigboldbicycle]

Probably longer as the new battery has higher capacity and better chemistry.

[@NighTHunteRX1300]

I have same toothbrush and is it working all the time 13 years, YES its no joke! I nothing change just brush, no change batery and all time is ok :) Amaizing

[@krisgasiorowski6608]

@@NighTHunteRX1300 Same with mine!! But I only brush my teeth twice a month.

[@derekbaall]

@@krisgasiorowski6608 ?? WHAT

[@derekbaall]

@@krisgasiorowski6608 ONLY TWICE A MONTH?

[@madvelila]

I just did this upgrade following your video. Thank you. :)

[@brendonv101]

Thanks for this mate. This is on the agenda for tomorrow.

[@PowerOn-]

Good luck!

[@brendonv101]

@@PowerOn- Update - Went well. I got a battery with tags already spot welded on so it was super easy to do.

[@RichRich1955]

I'm on my second one. After 2--3 years the part that the brush head slides onto becomes worn so the head vibrates when it should be snug. This reduces the orbital action significantly. Time for a new brush. I noticed it on my first one when I removed the head every time. I thought not removing the head would prevent this problem but it doesn't. I have it wrapped with electrical tape now.

[@rogeriodesousa157]

Very simple and useful... From Portugal/Porto, THANK YOU

[@PowerOn-]

No problem Rogerio, thanks for your feedback ....from Sydney Aus!

[@AntoniusFM]

Thanks mate, still an accurate solution, fixed our toothbrush.

[@PowerOn-]

Thanks for the feedback Ton.

[@featherbrain7147]

I've got two of these! One works long enough to charge the other...I'm off to try this. Thanks!

[@georghemondeo9080]

Dude thanx I brought alive my 5 year old oral B!

[@erikbruner]

Gotta hand it the guy for not editing out that WTF moment..... anyone who as ever worked on or in electronics has had many of them. So, Kudos to you sir! My purpose here today was to see how to get it apart, obviously. But, my plan was to use the case for my new 40mW laser module. Sadly, it requires a minimum of 3.7 volts. Oh well, plan B. PVC tubing. Good luck to all with your adventures.

[@theoneohmresistor]

Oral B

[@nc6826]

I have replaced my battery and you have saved my 28 teeth 😬. Thanks my online dentist.😊

[@DanafoxyVixen]

Great video. ive got a slightly earlier version of this toothbrush with a mechanical on/off switch and no timer. I bought it 11 years ago but its really been within the last 6 months ive had to charge it twice a week.. when it was new i charged it once every 3 weeks. I never knew the trick to get inside them, but now i'll have ti give it a go and change that battery

[@PowerOn-]

Hope it works out well!

[@musicfashioncarascompany9773]

Dobry DIY, zrobiłem identycznie i działa !! Wielkie dzięki !

[@PowerOn-]

...and a hello from Australia to a Polish viewer! Dziękuję za pozytywny odzew.

[@madvelila]

I'm having similar problem with my cameras focus. Have you solved the problem or purchased better camera?

[@madvelila]

Me too

[@crispinswainstonharrison9042]

Thanks. It took me two failed attempts to get it right, but now I’ve got it. I’ve done two successfully so fR and another 5 to go.

[@PowerOn-]

Sounds like an upgrade for the whole family 👨‍👩‍👦👨‍👩‍👦‍👦👨‍👧‍👧👩‍👦👩‍👦‍👦

[@MirceaD28]

I have an identical toothbrush. Now I know what to do thanks to you. So yes. Thank you!!

[@PowerOn-]

Hope you manage to change the cell!

[@adramytteion10]

thanks dude, it's so helpful video for all of us. greetings from Turkey :)

[@PowerOn-]

And hello from Australia!

[@sreflectionbg]

Thanks for the video! Ilike repairing stuff, not throwing away. Unfortunately this tutorial seems to be not working for the newer nodel (with timer) They are basicly the same, but those dheads from Braun changed the locking mechanism on the cap. Its now not L shaped latch, but click and done one. Once the ears are pressed down and latch, there is no way to retract them.

[@IIIPronGIII]

I'd been wanting to replace the battery on mine but didn't know how to open it, I've replaced mine now and had the same problem you did but works great now. Thanks for a great vid.

[@mr.berlingo8211]

Some of the instructions describe the disassembly, in order to remove the battery before disposal.

[@pingpong5000]

Very useful, good video warts n all. Thanks Simon Jowett

[@hkastelein5141]

straight push at the end, I made the same mistake. Good Video THX

[@PowerOn-]

Thanks for the feedback 😀

[@minduton]

Hi, i replace the accumulator by your guide. Do you know, what is on the bottom of the plastic engine block? It looks like two spare motor carbons or something. I had the same problem. After the replacement of battery, tootbrush didnt work. After a few minutes he miraculously worked.

[@Jc4dint]

I swapped a type 3756 with an eneloop aa. The original battery was shorter, so I had to cut some plastic bits, but it fits. I soldered the AA battery with the old metal bits.

[@claudenewbolt2659]

I MUST TRY REBUILDING MY BATTERY TOOTHBRUSH!

[@David-dz8jb]

Just done mine by following your instructions- the old battery had a corroded positive post and the tag just snapped off but I found that a piece of 5mm de-soldering braid was perfect for the job….I had the same issue with it not working afterwards but a quick sit on the charger and hey presto off and running.Wonder if the battery will now outlast the motor? There must be many hundreds of these brushes in landfill all for the sake of a new battery..

[@andrewallan6802]

I wish i'd found this and learned about the twist before I did mine! I made far more noise than your little grunt at 1:27! :-D Thank you.

[@PowerOn-]

Yes, the dissassembly technique is a bit counter intuative. It reallt feels like the plastic casing is about to break permanently!

[@andrewallan6802]

@@PowerOn- It does! Not to mention not gouging plier marks in the top plastic bit where the metal shank comes through. One thing I did notice when I took the innards out is that on the back of the case there's a small hole about an inch up from the bottom of the rubber grip. It’s covered by the rubber but with a bit of prodding you can find it. It seems to be made to engage with a long rod and catch that's part of the motor assembly. When the battery i've ordered turns up i'll try pushing it in while pulling the top off and see if it releases any easier :)

[@pyrofful]

Awesome job just got this brand as a free new member deal at my dentist. Brand new now but this is really fun to watch and maybe attempt to fix when the new battery gets "tired". Thanks and great job.

[@PowerOn-]

Thanks for the nice comment TJ.

[@pyrofful]

@@PowerOn- you're welcome

[@sylwiachaber9667]

Greate Job. Thx alot. I fixed my own one. In my case after fall down the negative battery bus wire was cut itself. I soldered it and all are work again. :DD thx.

[@PowerOn-]

Great work Sylwia!

[@danielwong9782]

Thank you for your video. I followed the steps and upgraded mine smoothly. Since I thought removing and soldering of the metal strip could be difficult, I used 2 thin wires instead.

[@PowerOn-]

Thanks for the comment Daniel. Using a wire sounds like a good idea....not too thin though as it will be carrying a bit of current.

[@BrainHurricanes]

I thought it had a smart charging system that only charges when needed so you can leave it on the charger ? Anyway, ours are on the charger for over 6 years now, but I wanted to take it apart to clean or solder a new switch as I have to press harder than normal to turn on/off. Thanks very much for the video!

[@freidmannguyen3430]

Just follow the instructions and successfully replace the battery for two OralB. Great video. One comment: you could you normal soldering head to solder a wire to the head of battery. There are some videos on KZbin about how to do it. Good luck to all of you!

[@elmerm9327]

Nice video, what voltage of battery did you use?

[@duncan-rmi]

wasn't the battery in my daughter's pink toothbrush- still had 1.2V on it. switching it on even without the motor connected puts a dead short across it. saved the battery, & put the empty toothbrush into the heap of toddler souvenirs. might move the battery into my own, which only runs for two days' worth of use. cheers anyway!

[@PowerOn-]

Thanks for a report back, looks like a capacitor or mosfet proably failed. Time for a new one!

[@eladeb]

I almost dumped mine.you saved my toothbrush.thanks!

[@PowerOn-]

No problem - glad to help....

[@Green-z5k]

thank you very much. your vidio is bset of best.

[@CarlosFerreira-kaiko]

Thank you! Very different from other KZbinr. I will try your process

[@АнварБускунов]

Спасибо вам большое! Всё доходчиво идеально.

[@DucKien86]

Thank for your sharing. Great video!

[@ThePakih]

Mine was full of rust on the battery and charging port as well. Now I am trying to replace and repair as needed by myself. Is it safe to change the battery using different type than the original one? Thanks for the video.

[@PowerOn-]

It must be a NiMH battery. It doesn't matter what capacity the cell is though. Good luck with the repair.

[@ThePakih]

@@PowerOn- I still curious with this. Instead of NiCd battery, why did you use NiMh? Thank's anyway for your respond

[@pihva_rusni]

Good video. I'm having problems with mine exact the same 2006. I never thought it will last that long.

[@SpikesMavic]

Excellent vid , thank you, I was thinking of trying to convert one into a little dremel !, ps: you forgot to push the pcb through the second dowel !

[@PowerOn-]

Interesting idea Stanley

[@evoke2104]

Awesome, mines on its way out, will do this soon, wish i hadn't of thrown my old one away now

[@PowerOn-]

Good luck with your repair 😜

[@zenzen9131]

A lot of 18650 battery protection chips do exactly the same on low voltage in that they shut off completely. The battery then appears dead until it is boosted by the charging circuit again :)

[@PowerOn-]

You're absolutely right....in the heat of the moment I just thought I'd bricked it 🙄

[@geofreyr]

great video man, thank you. On a separate point, I recognize that bird song - my favourite! You're in Australia?

[@PowerOn-]

Yup, Sydney

[@tonicipriani]

You actually don't need the wrench to open up the brush. There's a square hole in the back of charger that's designed for twisting and opening it up for "disposal", it's in the manual. Supposedly it's for you to twist it open, and snap the brush in half to recycle the battery and plastic parts. But still great video, I just finished replacing the 10+ year old battery on mine.

[@PowerOn-]

Thanks for the information on opening the casing Toni. I'm also impressed you have a manual after 10 years! Well done.

[@tonicipriani]

@@PowerOn- Well I don't... but the Internet did, lol.

[@christianfrancke]

I like how you honestly fail just to find a proper solution. Great transparency! Thx 🙏

[@ideaquest]

Great video. Helpful.

[@PowerOn-]

Thanks for the positive feedback.

[@mihaipopa9414]

Awesome, thanks a lot for this tutorial!

[@PowerOn-]

No problem Mihai - thanks for your positive feedback, much appreciated.

[@アンイアイ]

Amaziinggg!! just Wondering if my bRaun oral b's toothbrush was battery is drain & it brought me to watch this video. Hope I can do this. Thank you mate!

[@PowerOn-]

Hopefully you can do the repair. Not all Braun models are like the one I have but hopefully yours is the same.

[@ECASirk]

Superb video. I have this exact toothbrush, which I think I must have purchased in 2011 or 2012 (if not earlier!). I was starting to get issues whereby when the brush would alert me two minutes had elapsed by pulsating the motor, the motor would struggle to start again, slowly dying over a ~3 second period immediately after the pulses. The toothbrush wouldn't then turn on again until it had been put back on it's charging station for a moment or more. This was becoming increasingly annoying as it would happen every time I used the brush, and I can't have the charger in the bathroom (no sockets), so I have to go into the next room to restart the toothbrush, trying not to drip toothpaste and saliva everywhere... I would also find that some days the toothbrush felt strong and powerful, and other days weak and feeble, even though I always leave it on it's charging station 24/7 (unless I'm travelling, which I to a lot). I was looking for a new toothbrush (figuring 7 or so years of use was pretty damn good) when I stumbled upon your video, which I've just executed! With nothing else wrong with the brush, why not just replace the battery (assuming that is the cause of my issues)! The only differences I found were that my battery appears slightly different to yours, in that I don't have the capacity or manufacture year marked on it, and it is NiMh, not NiCd like yours was. My circuit board is also red, not blue like yours. =) I replaced it with a Duracell 2500 mAh AA cell, which was a bit of a snug fit, but seems to work straight off (no need to tap on the charger!), although it does only report 1.2V, not 1.3V like the old battery and your Eneloop replacement. I'd love to know how you got the tabs off the terminals of the old battery. I tried to pull the tab off the negative terminal and it broke at the welds, so I didn't attempt the positive terminal, instead replacing it with some multi-core wire on my replacement Duracell battery (fortunately there was enough of the negative tab left to use it again on the Duracell). Thanks or saving me £35 or so on a new toothbrush! Here's to another 7 years of good use! (and fingers crossed I don't post another comment tomorrow saying it burnt my house down overnight ;) ).

[@PowerOn-]

Wow. I'm glad helped you to fix your toothbrush. Hopefully you'll get a few more years of use. Try fully charging it then switch off the charger and see how many days usage you can get before you feel you need to recharge. You will notice that the "speed" reduces to a plateau after a few uses then it should be good for a while. As for removing the tabs it's best using a rolling motion....perhaps its in an early video of mine on recycling laptop battrries. Thanks very much for the feedback

[@ECASirk]

@@PowerOn- I replaced the battery on a Saturday, left it to charge overnight, then didn't charge it again, and found it was the following Sunday (so a week later) that it felt like it was about to die. Not quite the 2 weeks some report, but I do tend to ignore the 2 minute timer and brush for 4-6 minutes, so I guess I would get a shorter overall battery life. In any case, 1 week is a significant improvement over the old battery! Thanks again.

[@BoomBrush]

It should be illegal to manufacturer and sell items like this with completely sealed enclosures with no easy way to replace the battery. I don't see why seals can't be used to retain the waterproof-ness in combination with a removable battery. Thank you for this video mate.

[@PowerOn-]

I share yourviews and frustration, there is a good o ring seal at the top of this device so making the cell replacement a doddle if the'd mounted it in with spring contacts. Join the "right to repair" movement!

[@martinlewis1015]

Missed out one important note....static can destroy electronics so you must earth yourself before working on device

[@johnmay469]

Great video. Job done thanks to this. Many thanks. Best. J.

[@PowerOn-]

Glad to be able to asss John.

[@kevindarkstar]

Easy to see why no one does this, clearly made to be hard to change

[@PowerOn-]

Yes it wouldn't be that hard to make it changeable. It's just the way manufacturers work these days. Also even many of the commenters here just think it's best to just replace the whole unit "it's just cheaper/easier". Oh well I'll do my thing and they'll do theirs

[@pancellorum1]

@@PowerOn- Sorry to pick you up on the English but if your going to do public things like youtube..... Its theirs not theres.

[@PowerOn-]

@@pancellorum1 edited for YOU'RE pleasure (sic)

[@DungHuFlung]

Thanks for that, I had a 2009 battery which I just replaced with an enloop, I soldered everything, and came against the same problem: after battery replacement, the unit wouldnt switch on until I placed it on the charger, then removed it. After that everything functioned normally

[@halilakkaya7970]

Helal Ossun bu kadar güzel anlatılır.Tesekkur ederiz

[@GertvandenBerg]

Interesting, mine that looks similar has a NiMH battery according to the recycling label.

[@PowerOn-]

Yes, they changed, I think due to the fact that NiCd have been banned in a lot of countries. Luckily the charging voltages and current algorithms are the same so they can be used interchangeably

[@SebaDreamAngel]

Hi, is it really a good idea to replace the NiCd by NiMh ? The charging system might by different? Otherwise, very usefull Video!

[@PowerOn-]

The charging algorithms for NiCd and NiMH are the same, in this case I prefer the higher energy density and the lack of Cadmium!

[@Emmanuel_youtube]

Thank you. I have changed the battery and it works perfectly

[@PowerOn-]

Well done Emmanuel,. Another toothbrush saved from landfill!

[@daweitowalk]

Hi Simon, I just replaced the battery in my exactly the same oral b model with a 2500mah ni-mh battery following your video instructions. From 600mah to 2500mah is more than four fold jump. I wonder if it will also take 4 times amount of time to fully recharge the new battery? I think it is important to get the charge time right to maximise the lifespan of the new ni-mh battery. What did your experience with Sanyo 1900mah tell you? Thanks.

[@raphaelvictoratanacio5362]

just what i needed to do. thanks for this

[@PowerOn-]

Thanks Raphael.

[@xaxaxa-w6i]

Is it ok to replace ni-cd with ni-mh ? Could it be charged ?

[@PowerOn-]

Yes, the charging voltages and algorithm is the same

[@lyndongaming]

hows the waterproofing after opening? do you need some kind of sealant on it?

[@PowerOn-]

No sealant required.

[@lyndongaming]

@@PowerOn- wow amazing! you still use it as normal? like getting it wet?

[@damzelfly]

Can you tell me how many days of battery life you got from that eneloop battery?

[@PowerOn-]

Not actually timed it but I seem to go easily a couple of weeks before recharge seems necessary. I then put it on the stand overnight and switch it off in the morning.

[@damzelfly]

@@PowerOn- Couple of weeks sounds great. Thanks.

[@nickevans417]

Often with items nowadays the hard part is getting the case open without breaking everything.

[@kjsciacca]

Mine is only 6 months old and isn’t fully charging. It runs for about twenty seconds before it stutters out. Do you think it’s the battery? The charging case gets slightly warm when I use it as well

[@PowerOn-]

6 months old, something is wrong. Time to exercise the 12 month guarantee if it applies in your jurisdiction?

[@kjsciacca]

@@PowerOn- thank you

[@spudpud-T67]

6:51 I see you are also a fan of AvE

[@EVOLVED-q1q]

Hi Simon, i have this same model... voltage seems right but won't turn on even after charging...any help would be much appreciated... thank you

[@PowerOn-]

@@EVOLVED-q1q Well that's annoying! Can you try it out of its case? I did once have a slight misaligment of the button.

[@lucemmanuel86]

You are a life saver

[@MrCkkwok456]

Thank you, After watch you video, I do the same thing.

[@yasming3979]

My toothbrush has been smelling weird for a while and I know it was coming from the inside. Now I know how to dismantle it and clean the insides and replace the battery if I need to. Now I won't need to replace the entire thing

[@sajidkhanmahmood]

before watching this video i had the intention to attempt a battery change on mine but halfway through reconsidered.