Dyson v8 Battery Swap and Teardown
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- เผยแพร่เมื่อ 7 มิ.ย. 2021
- Dyson v8 Battery Swap and Teardown
If your handheld vacuum is starting to misbehave or run out of juice too quickly it may well be time to replace the battery. Fortunately in the Dyson v8 it is a pretty easy process to service the whole thing!
Amazon sell the aftermarket batteries:
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I have dismantled over a dozen used V6 "2ah" batteries and a few non-Dyson "4ah" equivalents. The used Dysons had >2ah and sometimes 3ah capacity and the copies
These are basically impossible to rebuild without special equipment.
Meaning all this ends up in a landfill…. I love how companies pretend to give a shit about the environment while putting out products like these.
Their products are absolute crap
I'm using a $35 charger/tester and some wires to check capacity on each battery cell while still in the pack (it's jank but safe). They're 3000mAh cells like shown above, and the 3 I've tested so far are 2289 mAh to 2315 mAh on wife's V8 Animal. I got the cells out of the case with some patience, some $7 car trim pry tools that I overpaid for, and there are no scratches on the casing at all. It's mostly patience, but not much past that...
I am likely going to replace all the cells, and they're less than $10 each, and I have an $80 cell welder. So I'll have about $175 in one battery, but I also have a battery Dremel, two Ego 2.5 Ah batteries, and I'm sure a few more I can't think of...so really it's not a huge investment in tools. In the end, $6 x 14 (unless I go with LFP and it's 16S and new BMS) for a new 2.5 Ah battery for Ego instead of $150+ per battery.
@@ericvincent3219 can you report back how the cell replacement went? I’d like to do the same. I don’t have a cell welder though. Would it be possible to rebuild without one? Have you found a source for the replacement cells that you could share? Thanks!
@@TuneYourOrgan Henry, I have purchased the cells for retrofit, but I chose to use 21700 Molicel 45a, 4200mAh cells. These take an extra 6mm in stacked width, which will fit within the pack, but I discovered the 21700 spacers make the pack too long. I'll be using kapton tape to make my own pack configuration (I will mimic the OEM 6-in-a-line). I'd love to have snap-in batteries like a toy AA/C/D one, but haven't found any.
I ended up buying a cell welder, and can't imagine any way to do it otherwise...but given how much lithium I'm owner of, I can now fix any of them using this. In my mind, that justified the $80 I spent.
I also spent $40 on an Xtar VC8 8 battery charger/capacity tester, and then I purchased the cells from 18650batterystore.com for about $6 each, plus spacers, nickel strip, and spacers.
I have more in the rebuild than what a single Dyson battery is, but given that I have a cordless Dremel, 2x Ego batteries, 2x Ridgid (granted these have forever warranty), etc. it made sense to put down the money up front and know I'll be better off going forward.
@@ericvincent3219 thank you for the info! I was hoping I’d be able to replace the cells myself maybe having to solder the connection, but sounds like no :/ someday when I have more space I’d like to get the equipment you mention
I was about to throw my replaced dyson V8 battery until I sees this video, I reckcon those cells could be a very nice flash light battery, just a little bit shame did not have the dimension on those dyson cells
The v8 uses 20700 cells, not a common size. They are in a case that is thick (for protection). I have opted for a 21700, for lower cost, higher capacity, and greater choice. I'm looking for ways to protect my cells and still fit within the Dyson pack, at least until I can find a way to build my own design in CAD for me to order from a 3D printer. I can do CAD work, but I haven't had time to dig into what software is used for printing.
@ericvincent3219 Since you're not gonna be able to reuse the cell holder with 21700s, just tape the pack together with kapton tape with silicone pads as spacers(nano tape that has lost its tack would be a good choice).
Cool info, But what was wrong with the pack if the batteries are ok
I would start looking for a fuse
A battery is a stack of cells. an 18650 is a cell, so you are indeed holding a battery.
I can't believe you measured those cells... they aren't called 20700 for nothing ;) Other than that, the fact that the charge port and the power button are part of the battery design doesn't instill much confidence in the parts Dyson are using.
I've since moved away from Dyson and gone to GTech after having loads of problems with these.
It really sucks that every company right now is going on about saving the environment and whatnot, but then make these ridiculous battery packs. with this type of battery cells it would be super easy to just make them swappable individually. But oh well. Thanks for the video, super helpful, I just bought one and wanted to see how the battery is on the inside, cheers.
I replaced these cells with molicel 21700. Now the vacuum lasts forever
What is what I want to do. I ordered some Molicel P42A so hope I will no longer have any issues running on max setting.
Edit: could you fit the 21700 into the housing?
@@certifiedalchemist It won’t with the shell of the pack. I tossed it and just wrapped some electrical tape around the cells
@@certifiedalchemist did the molicel P42A fit in the housing? I use the wall mount so I’m worried taping up the bottom like OP will prevent it from fitting in there
@@TuneYourOrgan I cut the plastic shell for the cells in half (or actually cut 2/3 away). So the cells still had some grooves to rest in and then just taped it with kapton tape to hold it together. Snug fit, but once it is in there is no problem.
It worked out great. Original battery could do 7 mins on max when it was brand new. With the P42A's it goes for 12 min.
@@certifiedalchemist These are the same cells I chose. If I understand what you've written, the "sides"--which would be the top and bottom while sitting flat on the table--would be left, and the batteries would be the meat if it were a sandwich?
I was going to wrap as many layers of kapton as I could fit for impact protection, but if you have something that works, I will likely go that direction.
How nice of Mr. Dyson to kill off a battery pack full off 21700s that all still hold at least 4 volts!
He's absolutely not a fucking scammer king of planned obsolescence.
Hi, How many mah, I must use?
As many as you can get, the bigger the number, the longer it will run
Great video mate, could I replace the battery with a 12800mah battery? The volts are the same as old battery it’s just a bigger mah,,current battery is 1300mah 22.2v, replacement I’ve been looking at is 12800mah and 8800mah both 22.2v,
Thanks
I don't see any reason why not as long as it's the same chemistry and voltage
@@backofficeshow yes the chemistry is the same just a bigger MAH than oem
Expensive price for crap vacuum. I hate ours. It pushes anything bigger (ie dog kibble) all around the floor, instead of picking it up. Battery is screwed after like 6 months of use. Plus the handle hurts your hand while using
Yeah, I agree, totally crap and actually loosens up with use. Probably cost several lifetimes of regular vacuums as well 🤦
@11:37 I bet that hurt 🤕
Unfortunately I'm used to it, especially with these kinds of battery, that metal tape cuts you to ribbons. I might start wearing gloves! 😂
Thank you for noticing though, much appreciated!
Great video - the battery case does not easily come apart usually so here is the fastest way to get the battery case open - th-cam.com/video/vroaV0BiMbs/w-d-xo.html