Man this is Dyson hardcore! I love it!! You have replaced the Dyson with a Tyson!

Careful everyone, you need to consider the draw rate, not just the capacity.

Love how you omit all the actual work required.

FIRE HAZARD!! In the video, he does not solder balance wires to the control circuit board. These lithium cells must stay balanced or eventually one will be over charged to the point of failure. By looking at the OEM battery pack you can figure out where the balancing leads should go. Do not omit them.

Thank you very much. Wife bought this vacuum. House and three dogs far too much for vacuum.This is a great upgrade. Owned photo business using 100+ rechargeable battery packs. Often replaced the 3 lead cell batteries inside. Dropped a new box of batteries "Once". Within seconds the box was on fire. Thankfully no one harmed. Extra, cautious after that. Thanks again.

Cool mods. I also want to extend the battery life of my V6. The main thing to watch out for is you gotta choose cells with low internal resistance or else most of the energy will get wasted as heat (Dyson was right to warn you). But I haven't seen the resistance specified in any datasheet, leaving you to measure it yourself. Plus, power tool cells usually hold less charge. Other improvements I'd like to see: 1. power from AC adapter. 2. reverse switch to turn it into a blower. 3. disable annoying automatic cutoff when clogged - this stopped me from using the V6 for my DIY vacuum former.

You should ask someone to 3d print you a new battery housing.

Hi Please accept my apologies first. Your battery modification is ill-advised. Both type of replacement batteries you suggested are not suitable for the application. The original cells used by Dyson are Sony VTC4, which have a continuous discharge rating of 30A, also they are more expensive then the Panasonic ones you suggested. Panasonic make excellent batteries but not for high discharging applications, which is why you never see them used in power tools. Both Panasonic 18650 and 26650 cells you suggested are only rated below 5A. Dyson DC motor is rated at 350W, simple calculation suggests your cells are going to be able to deliver 111W continuously. (3.7V nominal voltage x 6 cells =22.2v, 22.2V x 5A=111W). Although they may work for you initially, your cells will overheat and degrade rapidly over short a period. More suitable replacement options are, LG HG2, SONY VTC6 or Samsung 30Q cells. These are rated at 20A and 15A respectively, unfortunately even these ones have lower ratings than the original Sony cells used. Although I personally do not condone Dyson's b*lls**t marketing tactics at all, their choice of components are excellent. I suggest if you want your Dyson vacuum to last longer, use 12 x 18650 high discharging cells in 2 parallel banks instead of 6 26650 cells. Let me know if you believe my comments are out of line, I will be happy to remove them Regards

good idea... just please re-connect the balance wires (links to from the pcb to the cell-cell solder tabs). Cells tend to go out of balance over time if not managed... and will not tolerate it like nimh or nicad

I don't want to live in a world where I might have to vacuum for full hour in one go

Awesome upgrade! Never thought it would be that simple and easy. Thanks a bunch for sharing and great job on the video! Cheers!

After watching this video I decided to go one better, I attached a car battery to my cordless Dyson, and now it lasts for three weeks on a single charge, it's a bit heavy but I think it was worth it.

You are my hero now I have an old dyson unit that needs a battery replacement where I live the battery cost 70% of a whole new dyson cleaner. I will try to replace the battery on my own Thank you

I have the 21.6V 3000. It was easy to replace thanks to your video.

just bought my V6 today, will definitely look into this mod after I've depleted the current cells. thanks for the video!

Dyson got some of those consumer screwing things going on with their batteries that ink jet printers have with cartridges. Batteries should be separately replaceable from the BMS and you should just be able to stick new 18650s in there or change out the BMS with a few screws if it goes out. Dyson has so much trouble with the batteries working. Congrats. Thanks for this video.

Lithium cells are generally a little more volatile than previous battery techs. It goes for the original 6 in the dyson as much as the upgraded/replacement cells here. Having them put in a pack with a decent charger by dyson doesn't automatically make them any safer. Get good quality cells, decent balance charger and there's zero issue with this. 18650's run at 3.7v up to around 4.2v fully charged, so long as the ampage output is at least as good as the originals, there will again be no issue. I'm another user who'd appreciate a bigger battery pack. My solution is likely to be a belt clip with a larger battery pack and the battery modified to just be a plug for the belt pack. Will see though :)

It's a missed opportunity not making those batteries swappable like a cordless drill with a separate drop-in charger for the battery pack. But this looks like the next best thing :)

Modded my old DC34 animal pro with the battery meter. Also refitted a dying after market battery pack with 6 Samsung INR18650-25R. Only 65 watt machine, so 20A discharging rate should be safe. 2.5 Ah instead the 1.3 of the original doubles capacity. And this choice made it a cheap mod. Thanks for the inspiration!

Doesn't the 5000mAh battery option completely banjax the wall-holder/charger functionality?

Dyson, hire this man.

That’s cool, I’m thinking of putting that on my V6, I have the exact same Dyson V6 as yours, colours on it is so similar to mine

Nice video. I think I would replace the cells with Sony VTC6 cells which at 1320mAh would increase capacity by another 50% and enable you to still use the wall charger fitment.

I would love to make the awesome upgrades, but I keep getting flash backs of scenes from " Tim, the Tool Man Taylor, in the old Home Improvement series..." the vacuum taking off through a window, and fire everywhere!

I Love that idea....what awesome guy....

very useful information, ill take a look on the battery once it not working well

You understand those 2000mah cells will withstand a much greater amp discharge rate and therefore make a more powerful suction or possibly less likely to explode unit and as they're running in series I can say it'd be much safer leaving it stock

Great mod. Thank you for sharing. I am curious if you would consider a mod using the Ryobi One+ batteries. The reason is, they are pretty popular and easily available and it also has a battery meter built in. Most people that have it usually has a few around and the charger chages way faster.

Why am I watching this?!? I don’t even own a Dyson.

Just ordered some 8800MaH batteries for my conversion. gonna last all day! Great video. you can find the batteries on ebay for about $4 each

How are the new larger batteries connected to the circuit board? I don't see the original metal prongs soldiered to the new batteries. I wish u could have shown the process how u disconnected the old batteries & connected tge new ones. Could u do a follow video? A demonstration of the vacuum sucking

Are you, by any chance, still in possession of the original cells? I'd like to know, which ones come with the original battery pack. Upgrading to 3Ah-cells seems like a good Idea but I guess they have to provide at least 24Amps at max mode so having a look at the original cells data-sheet would be a nice start for figuring out which 18650 cells to replace them with. Thinking Sony VTC6 should be on the safe side but maybe there's something cheaper or with more capacity that gets the job done. On the other hand I don't want that thing to blow up right into my face.

Love it love it love it!!! VERY nicely done! I am one to mod things, but to mod a vacuum?...That's a smart MOD!!!👍🏻👍🏻👍🏻

Like your product placement (operation Christmas Child)

If you're going to build or modify batteries you really need a battery tab welder. There's a reason that the tabs are welded and it isn't just for ease and speed of manufacture. Heat degrades the life of Li-ion cells. The heat generated by soldering the tabs can almost kill the cells. You'll stand back and be pleased with yourself not realising that the 'new' cells you've just fitted may well have as much life as old ones getting close to the end of theirs. A battery tab welder spot welds the tabs with intense but very short and localised heat, thus not damaging the cell. A crude battery tab welder can be made from a car battery, but that's another video!

Interesting idea, I was thinking though that a neater solution might be to upgrade the cells to 3500 mAh, but extend the pack to contain two extra 18650 cell wired parallel with the last two. You could then simply make an extended rear shell case for the extra two cells with very little hacking (maybe even 3d print it). An even better hack is to lose the front retaining screw and replace the rear one with a screw that has an extended thumb wheel on it. Then you can quickly swap out the battery :^)

You NEED to control EACH cell asking for trouble

Keep at it m8 mabye next time a temp gauge and a weight comparison of the different battery install well done!

In this video it is not used the original Dyson BMS ( batter manager system). I can tell by the position of the thermistor. I believe it's not safe to charge a pack with no connections to each individual cell, if one cell will get unbalanced it will overcharge and damage the cell. If you attempt to remove the cells from the original Dyson BMS, it will lock with the 32 red lights. There is a fix for that, in case you locked your BMS, to reset the lock by using a PICkit programmer to access the microcontroller in the Dyson pack. see my other comments

I did buy 6 cells 3400mAh in China and started following the instructions. The battery meter worked like a charm (drilled hole in the plastic). But as I managed to open the battery after over one hour I was confrontec with the battery pack with no way to open it the easy way...I am not afraid of soldering, but had no clue how to losen the contacts from the battery...indeed it also was incredibly difficult to unsolder the circuit board since the metal is so soft and leveraging does not work simple as that. Also when trying to lever the contacts on the board after removing solder paste, I somehow shorted the board, there were sparks and I was not sure anymore if I did not damage the board for good... end of story: bought 3rd party 3000mah replacement battery :-( So the video should be extended how to replace the 18650 batteries also.

Thanks for this video. Purchased a display off Amazon cut a hole in the back and it fits flush with wires inside. Programmed it to 6 cells works great!

Now if you could show how to convert the dyson to run off dewalt 20 volt max battery... I need for my cabin.

Top Marks very good project

Awesome! Smart guy.even looks good.

Once completed to your mod can this be inserted in your wall charger? From what I can see the wall unit is designed in a cozy figment but not sure. Would love to try but yeah just asking. Thanks and also great work👍🏽

Dear Dreamsci - great video - great idea - I like the phase/stage1 approach as it keeps the same physical form factor etc.... is there any chance you could upload a video show the high level steps to make the mod as you commented is need soldering etc? I'd just like to understand what is involved before I start. And from a safety perspective I work with lithium cells at work, just a lot larger i.e. 48v 756amph, so will take the necessary steps. As for AskDyson comments, please don't insult our intelligence. You have a product development plan and strategy. If you made the V6 the best it realistically could be, then you couldn't sell the V7, V8 etc.. I worked for the worlds largest manufacturer of off highway diesel engines..... this difference between 150hp and 200hp was software (and the price). Don't use Safety as defence to justify market based pricing (which is fine), but not at the expense of undermining TRUE safety.

Hello, has anyone done this and had some good/bad experiences with changing the batteries?

did you try to replace a V6 batteries with a more powerfull V8 ones?

I might mod mine by replacing the battery problem with a long cable plugged into a wall socket..that way this will work all day ! might even send my idea in to Dyson.

please make a video with step bye step instructions on battery assembly. glue/soldering/prep/materials required. thanks

I'm also guessing newer models will act like laptop batteries. The control ic goes into die mode if any cell fails and replacing cells simply wont work if the thats the case or you dont make sure voltages are kept to control cct while replacing cells. My dc35 battery does not have the die protection but not sure about other newer models

Thanks for sharing this! Planning to extend my vacuum’s battery

Had a battery issue on my v8, it started dying then it just wouldn't work. So i went ahead and bought some sanyo 20700 4250mah batteries (top of the line at the time) to replace the current dyson labeled 20700's. Soldered everything up and no go, same issue as before. Turns out I have a bad controller. So i went the cheap rout and got they china 28$ battery replacement and the casing started to melt on the first go from poor wiring, needless to say that was a bad idea and I got my money back. So I gave up and bought an authentic dyson v8 replacement battery and all was good, for about 3 months. It would be fully charged but still wouldn't work. So I said fuck it and swapped the Sanyo's over from the bad controller one I had with the new v8 battery that just started failing and Bingo! Now I have a modded Battery for the v8 and works so much longer on high! If this fails again it's going in the trash. I really like the power of the dyson, but it's not worth buying a 70$ battery every quarter.

Excellent.

brilliant modification

Fantastic Video, I might try this with my V8 I just purchased 5 mins ago.

Your the man. Great idea. This would be the perfect project for me.

I have a spare damaged battery pack, could you combine the two? Piggie back one on the other?

You should *really* balance-charge them and make sure they can deliver the right current

Great video! Thanks for blazing the trail for mods on this product! As I watch the battery mods, I keep thinking about the Bosch Battery packs I bought recently (5Ah and 6Ah). They are 18V (20V Max). I could not find the discharge current anywhere, but one site suggested it was 25-30A. I'm wondering if this Bosch battery pack is close enough to the 21.6V Dyson battery requirements to use in the cleaner and avoid any damage. Does anyone have an opinion on this?

I'd like to point out that if you attach the battery meter to the removable battery part, you would not need to modify the vacuum unit itself. Should be a safer mod. You only get the ability to monitor the charge level of your modded battery, then, of course.

Excellent DIY video! What is the battery type of the original battery? I’m looking to get the 3250MAmp batteries and do a straight swap.

Awesome mod! Great work!

well done! great video

Hey, I have a V7 that just doesn't switch off. I need to remove the battery just to turn it off. Do you have a solution for this? Thank you!

very good～thank you

The newer V6 Absolute has a rear HEPA filter which is not compatible with this battery gauge mod. There's a much easier way to increase operating time - buy a larger capacity battery off ebay.

just Awesome 😎

Hi, great upgrade, I tired to change batteries for 3500mAh but after soldering them together I got red light flashing about 20times and then green. Dyson doesn't work, isn't charging. What did you do with temperature sensor which was located in original battery pack, pls? thanks

My warranty was expired 3-4 years ago! :)))

Good mod, but why didn't you add the leveling circuitry? The original controller monitors each cell individually, but yours does not. At least as far as I can tell.

How did you get the battery meter flush against the back cover? The connector for the wires sticks out too far and I don't see how you made it fit on your mod, and I purchased the same exact battery meter that you used from Ebay... can you explain how did you make it fit on the back cover??? This is an edit. I removed my max button to make the wires go through the existing hole where the button was. I have no use for the max because it uses way to much battery power. Turns 20 minutes into 2 minutes. So my battery meter sits where the max button was.

Excellent video, thank you.

Surely with the bigger battery it wont fit into the charging unit anymore?

You forgot to mention one major thing!!!!!!!!!!! If you do this modification, forget about using the wall mount for the unit because you have altered the size of the battery housing! :0)

May I ask how to just change those 6 batteries to the same size 18650 lithium ion cells 3500mah. (phase 1) ? And how much longer battery life you will gain by doing that only phase 1? Thanks

Hi - great idea - and a pain in the *** to get the battery unit open but I stopped short of cutting up the module and replaced the 2200MaH with 3500MaH batteries. All went back together well and charged. Trouble is the Dyson (DC59 in this case) shows a red light on the battery when the trigger is pulled. Is this because the circuit is incompatible or something else? is there a way of resetting either the battery or the DC59....? ta

Surely though the hoovers battery life is all dependant on the motor life etc. Putting batterys in a hoover that should only work 20mins on the single charge for one full usage. And ramming it up to a hour is possibly not the best idea for the motor and all the other parts of the hoover overheating and causing a short life span? ... I have a dyson v7. It has 30mins on a single charge and I think it's perfect! Clever bloke though. I like people who can be very handy and clever like this.

Hi i've done modification for V8 battery package following your video. I' ve seen that u made Wire connection with + pole and - pole of the entire package. ( Serial connection of batteries). When i connect package with dc recharger, nothing happens. No light blinking. As u know, the electrical circuit has 7 cables connected with batteries but in the new package ( the powered one made by 26550 type) has only 2 connection. Could you help me?

Interesting idea. In upgrading the capacity of the cells, do you need to worry about the specific type of Li-Ion chemistry used? I thought some types were better suited (safer?) for higher current draw which I assume a Dyson is. While others were better suited for higher capacity. Maybe there's a reason Dyson only included 2000mAh cells? Can anyone knowledgeable comment more on this?

i did the changes you suggested, and replaced the batteries with LG ones, but when i installed them i got the red light starting to flash. before that it was blue. Any suggestions?

Which mode I have to select for the display? Those sellers write, that you have to select the amount of batterys, so should select for the usual v6 battery 6 or 1?

Great video! What battery meter did you buy? Do you have a Type/part number?

Hello - good idea - been thinking of a simillar mod, being a model aviator....well !.. more a builder and repairer, so am aware of the problems/dangers with Li-ion & Lipo's. Did try to modify the old battery of my DC35 Animal a year or so back but damaged the charging cct PCB, so gave up, I've probably got a few more months left in the present 1300mAh battery pack but will attempt your mod when they die. The difficulty I had in my 1st attempt was opening the Battery case your video does help with this, it's always the case when trying to repair household equipment you never know where the little clips are and whether to push, pull or squeeze the casings, just like car trims. So is your mod viable for a DC35 animal...joe

You don't get any overheating, or error lights, or strange functioning?

Why doesn't Dyson gives you the chance of replaceable batteries and the option for a bigger more lasting one?

I want to modify my v6 accu, after changing the cells always the redlight is on! What can i do?

How did you solder the wire to the battery terminal?

Nice Work, i will try it, when my V6 battary starts loosing some Power, but for now 15+ min its enough to clean my Apartment.

Do you know if a Dyson absolute main body with the hepa filter will retro on a v6 animal cyclone housing and dustbin

What do I do with an old battery that no longer works

Question were an you buy this modification from and that meter any info would be helpful thank youn

Next video, V8 Twin Turbo swapping my Dyson vacuum cleaner 😂

After modification Dyson V6 is charged by a regular charger? Or need more power?

great ideea i will do this when my battery is going to die

Is it possible to modify a non hepa Dyson V6 to a hepa filter?

That's why the batteries for my e cigarette are sold out :D

Great mods! I going to do this! 1 hour run time instead of the normal 15 minutes. Cannot wait to use my V6... after the mods.

Fantastic video. I have a question. I recently got the red light of death by using the vacuum after it shut off, twice in a row. I took the battery apart, and charged it using an appropriate charger, and it's now resting at 25v. The battery however still flashes red. Is there a way to reset the circuit board? I'm ready to buy new cells, but I don't know if my board is bad, or why it still flashes red after the cells are up to the right count. Any suggestions?

Hey, which setting do you use on the battery indicator? I'm using 6c at the moment, but unsure if it's the right one, cheers for the video!