No guaranted every cell have the same performance. Some may die faster you never knew when electronic involve

@@billykulim5202 you're stating the obvious...the point he's making is the performance is still adequate after the long period and especially the mileage. For an average driver, that mileage translates to 20-30 years of driving, without taking into consideration the natural degradation of the battery chemical.

Please forgive him. He read too much petroleum companies propaganda.

Not some, it is all taxi using BYD

So could be around 1000 cycles. Probably still has 95% soh. Lfp?

Agreed, BYD knows how to make cells and batteries

Lawyers live on incidents from battery short or have water drop on the battery materials.

Your comment was kind of silly. Likewise, this worker in the video couldn't survive 1 hour as a lawyer.

To be fair, ICE cars are a lot more complicated. Everyone is just used to them.

no@@Brendon_M

​@@Brendon_MAgreed, it takes many decades to master it - performance, reliability and economy.. yet thanks to Elon Mush which open the door to China to wipe out ICE development and do what China do best, semiconductor and electronic the things they been producing all for a decades

Actually, China was smarter than that. They cornered a lot of the world's lithium and cobalt market buying up mines in Africa.

@@mondotv4216 lol and batteries like this one does not need cobalt. and btw. Australia provides about the most lithium, Sweden and (maybe USA) will follow since huge reserves were discovered

LFP battery cant catch fire. Its safe.

Byd ❤

@@sivaree2226 CATL cells are better than BYD's. though

These LPF batteries are safer than all the ones in our devices which are lithium ion. LPF not as energy dense for performance but are workhorses.

You're welcome!

A little more complex than building or repairing an Ebike battery.For safety really.

A Tesla pack of the Model Y BYD blade battery pack is much better organized, more efficient and easier and cheaper to build. BYD has a bit to learn. They are on a good way but they still have a long road before them.

@@wolfgangpreier9160Tesla battery can catch fire, BYD blade doesn’t, it can run punctured, Tesla battery charge less than 100% to extend life and BYD blade can charge to 100% every time, Tesla battery drop about 30% in cold weather and BYD blade battery drop about 15% in comparison

@@ALWH1314 You know that Tesla uses BYD blade batteries? Then why do you tell me that BYD blade batteries catch fire and BYD blade batteries do not - which is - btw - not correct. But whatever. You must be a fun-troll-chinese-spy!

@@wolfgangpreier9160 And because they're packed according to the Americans' demands, they are dangerously fire-prone. Look at the recent Walibi Holland fire for example. Two Teslas went up like a bonfire, a Leaf burned easily, the BYD Atto3's refused to go up, one Renault Zoe refused to go up. Honourable mention for an Opel Mokka-E that took medium fire pressure from the side and refused to go up. The Loooopings website 'Brand op parkeerplaats Walibi Holland' has a photo of the Tesla throwing up flames twice its own height. Right next to the inferno, an Atto3 that's showing that much fire pressure doesn't compromise its structure or battery. A Tesla model x took very little fire pressure from behind, but lit like a bonfire and was literally burned in half. Photos at local media Omroep Flevoland 'Zes elektrische auto's uitgebrand bij Walibi' And I see more photos of Teslas basically burning to a crisp while other EVs that took more damage (either impact or fire pressure from other sources) remain more structurally intact. The reason Tesla buys from BYD is because BYD has better engineering than Tesla has itself, or the Korean batteries Tesla bought before. If only Musk can get his sociopathic fingers off the designs and let the Chinese engineers do their jobs, they'd be much higher quality.

@@ALWH1314 >> Tesla battery can catch fire, BYD blade doesn’t, > Tesla battery charge less than 100% to extend life and BYD blade can charge to 100% every time

Thanks for sharing. BYDs delivered in Australia cost roughly double what they cost in China so the battery pack theoretically could be replaced for a 1/4 the price of a new car here.

现在不是更便宜？原材料价格不断降价电池价格就不断降价

nihao brother @@user-hc5cg3jc3i

Isso se a bateria teoricamente for comprada e usada na China , se for usada no seu país vc pagará impostos e frete ​@@Brendon_M

@@Brendon_M 60kwh LFP are selling to ev manufacturers for around 4k US now, can't remember if they were CATL or BTY, but yeah, materials and chemistry is getting cheaper every month, sodium ion just rolling out now on small EVs in china, byd is ramping up production and so is northvolt who revealed their 160wh/kg sodium ions late last year ev prices are going to be cheaper than ICE soon

For decades really. LED lights etc. Ive been in Ebikes for a decade, all their stuff.

Thanks. The battery recycling I've seen mostly just involved giant shredders so easy disassembly is not too important for commercial companies. But anyone wanting to reuse these packs are going to have a hard time

Specifically, see the Li-Cycle battery recycling processing which can take the whole 1000+lbs EV battery _as is_ and literally *shred* it. Then separate its shredded components by density in a proprietary liquid column along with some other processing afterwards. Search KZfaq "li-cycle battery recycling" and especially the video from JerryRig where he recently went to a Li-Cycle Arizona plant to see the operation up close. The process uses no heating so no fumes at all. The water is recycled. Some 95% recovery of the battery including black mass, metals, and plastics. You can see the machine feeds from 1000+lbs EV batteries to palm sized phone batteries all the same. Kinda like eating sunflower seeds versus a big pork chop and it all gets digested the same way.

​@@Brendon_M, really apprecite your efforts. Does it mean that replacing bad batteries only (partly) is not going to be easy as well ?

Like said here, watch how they do it,brilliant.

Thanks. There is a part 2 and 3 up now. Though my plans have changed and I won't be pulling the cells out anymore, instead I'll be rewiring the cells in situ

You're in luck Dala (Dala's EV Repairs on KZfaq) has made just what you are after. He has made an interface box that talks to a few different model solar inverters and a bunch of various EV batteries so all you need to do is buy the battery and bolt it to your wall. All open source on GitHub too (his handle there is Dalathegreat)

My current system use LEAF cells. Much more convenient

EVs are now coming in with plugin feature, apparently this idea is part of the aus gov strategy to decarbonise the grid - consumer evs essentially serving as a mega battery during nights i know byd offer this feature, seal 82kwh costs 60k plus you get a car, should be getting cheaper in the coming yes but seems like a potential alternative to ultra expensive home batteries atm

There is probably no Part 2......

Thankyou

Happy to help

I've yet to see an actual "structural" pack from any car manufacturer. As far as I can tell it's just marketing hype. They all just increase rigidity in the car body. Personally I think a structural pack is a bad idea, I don't think the cells would last long-term with all the various loads put on them

@@Brendon_M I would say 4680 Battery pack from Texas Model Y is actual structural part, but they don't make many of them. - 4680 ramp up is nowhere there yet.

​@@HVM_fiTeslas 4680 is already superseded. CATLs new design has higher volumetric density. Most Tesla cars sold world wide use CATL or BYD LFP batteries now. I suspect Tesla might ulitmately stop making batteries.

@@nordic5490 LFPs are used standard range and low power models, NMC beat them still energy and power density.

BYD is one of Tesla's battery suppliers.

Very welcome. Glad I could show it

I'm happy to give it a go if Tesla wants to donate one to me😁

I agree. It's a robust design but it takes 1 failed component on the BMS circuit board and the whole thing is trash

My pleasure. Hopefully it helps others out before they are like me and dumb enough to try to turn one of these packs into home storage

Set me back AUD$11000 by the time I got it to my house

Personally I don't think there will be much in the way of reconditioning these batteries. Maybe if there is a chemical to dissolve the glues, but you'd still need to get BMS and busbars off the cells which I can't see a non destructive way of doing. The build quality seems fine and so far BYD have a good track record in making cells and battery packs so I think the battery will last. LFP is a (relatively) safe chemistry that is known for lasting and the thermal management is well designed so I'd have no hesitation in buying something with this pack. They'll probably fail in warranty or not at all

Well, currently we write them off as broken if they lose 30% capacity. But that's still 42 kwh worth of battery that works. What we really need is an adapter to hook those into home solar panel installations as a battery buffer, solve the problem of old grids not able to handle neighbourhoods being a huge net electricity delivery area during the daytimes when the sun is out, instead of using it up like they did in the past.

The service life of a battery has nothing to do with time, but the number of charges and discharges.

@@poopkljok8342 More important is temperature and time at maximum voltage. Dahn has 10k cycled NCM when DOD is 30-70% kzfaq.info/get/bejne/i7iZZ61_1pzeiWw.html

Yeah, there is nothing wrong with the way the battery is built in terms of quality. Only downside is the lack of repairability but with the life span BYD are expecting from these batteries that's not really an issue for someone looking to buy an EV. They are LFP cells but due to my current system I'll be running it as a 14S pack rather than the traditional 16S.

@@Brendon_M Boy, you will get yourself a massive storage which will be very long lasting with LFP cells. Good job.

How is BYD bad? tesla uses BYD's battery

It is puzzling that BYD's battery is clearly the safest, and even though it has been passed the Acupuncture test, but many people say it is the worst quality. Rumors and prejudices are really terrible, and can turn black and white upside down

This isn't bad. It's downright appalling..

Thanks. I agree the lid should be more sturdy. I saw a picture of a battery pack where a rat had chewed a hole in the plastic lid and tried to make a home inside the battery

The cells are just sitting between some aluminium cross braces. I'm guessing they don't swell very much so there is nothing that actually clamps them together. The "spacer" stuff is some sort of hard adhesive. Presumably it is a thermally conductive layer that takes up all the voids better the cells and cooling plate

I thank you for your reply, it would be interesting to see the placement of the crossbars. In the end and initial part of the pack it seems from your video that there is an end plate, is it still aluminum? @@Brendon_M

Yeah, the cross bars are aluminium and welded into the base plate of the battery pack

Yes, there are 126 LiFePO4 cells in series. Total pack voltage is 403V nominal

They're LiFePO4. I know 14s is a weird number but my current system is 12s of NCMs

@@Brendon_M I guess as long as your inverter can work with the voltage range it doesn't really matter. How about a stronger tape like gorilla tape or trex. Bunnings has some pretty heavy duty tapes which may be better for you. Interesting project!

I'm no longer going to try and pull the cells out of the case. I wasn't expecting them to be glued in so now I'll be keeping them in that case but I am planning on rewiring the pack to a different voltage and I'll try to make a video of that process. I'll also try to get a few more close up shots of the way the cells are glued in and attached

Agreed. Insurance companies are going to have to start repairing EVs or its going to be too expensive to insure to them

Yes and no. This battery will be in parallel to my current home storage battery so I'm trapped in keeping the voltage the same as my current system. I did consider upgrading my whole system to be able to run a high voltage but for better or worse I've stuck to this path. I'd be quite interested to find out if the CAN communication used by BYD is the same between their home storage packs and their automotive packs. Very convenient if they do but it won't be me working that out. (At least not at the moment)

Have you discussed any of this with BDY? Are they approachable at all? They must know these battery packs would be desirable. Questions like what glue and can it be disabled? I wonder if they issue any papers on disposing of packs, this might help.@@Brendon_M

Nah, I never spoke to BYD. Probably should have. They're not Tesla so they may have just sold me a pack as a spare part and I could have cut out the whole dealing with the car body bit. I'd be interested in how BYD dispose/recycle the packs in house but it wouldn't help me now anyway as I'm set on my (no doubt ill-advised) path

@@Brendon_M I was thinking maybe a heat gun could soften the glue sufficiently to ease the cover off, then maybe enable the cells to be separated. Depends a lot on the glue though

You're probably right, heat and a solvent would get the free the cells but you'd still have the issue of the laser welded busbars though.

Thanks. By the time it was delivered to my door with all the transport and auction fees it cost me AUD$11000

@@Brendon_M that seems very reasonable. Congratulations on the work you have done😉👍👏👏👏

Many thanks Brendan; looking forward to the next update!😉@@Brendon_M

Thanks. The raw footage is about 2 hours all up, maybe about another hour or so of looking at things deciding how I'm going to tackle them. So it wasn't as bad as I thought. I'm yet to cut all the busbars apart. I suspect that'll take some time

Do you think that you could replace dead cells in the future , like they do in Toyota hybrids, cheers

@@honestjohn6222 probably not, which is disappointing.

@@Brendon_M Dear , May I know what’s makes you disappointing..? BYD ensure we can replace the cells inside the battery bank instead of dead cells.

I'm disappointed because you cannot replace the cells in a BYD pack. If a cell fails then the whole pack is destined for recycling. Hopefully they are as reliable as BYD claims and cells won't have to be replaced

The Atto 3 doesn't have a service disconnect. The manual says to disconnect the 12V battery and then just unplug the HV cable from the side of the inverter stack. You then put a cover over the end of the cable that locks in place to keep it from being plugged back in or the terminals touched

Thanks. Yeah I'm a bit disappointed in the lack of repairability. On the other hand it speaks to how confident BYD are in the reliability.

I would rather not encourage self repairing of battery, which could be potentially more dangerous after such non-authorised repairing. Always remember: SAFETY FIRST

Kind of makes the battery very hard to repair or recycle when its end of life. Pretty disappointed and there should be laws preventing this type of manufacturing.

​@@armunroThese blade batteries have a Large amount of Charge per cell to recycle them dip in liquid Nitrogen and Shread the whole pack. Much safer!

I don't know exactly but I suspect it was partially dismantled and rain got into the battery pack. Corrosion and shorting out led to the fire. Also I didn't think that it was a BYD battery, it looked too small

@@Brendon_M It was from an MG ZS

Thanks. You're close. The car had a collision but was deemed unrepairable by the insurance company so it can never go back on the road. The battery wasn't damaged. I have pulled it out and apart so I can use it in my home storage system. Unfortunately I don't think it is possible to replace a cell in one of these battery packs due to the way it has been built. Hopefully the cars are as reliable as BYD claim. Which I think they will be, otherwise BYD will be in trouble as even they will struggle to repair these batteries. I don't know the price to replace the battery pack.

I understand, it's bad that the insurance company doesn't repair the car, maybe for the total price of car+battery it's unfeasible. I think the battery is very expensive, maybe it's not worth it, thank you very much for the quick response, good luck with your home project.

lol the insurance company repair car?? they only know how to make you pay more yearly premium @@rafael7word

one of the problem of BYD LFP blade battery is , because of the arrangement of the battery pack , rectangle rather than round , they can fit in more battery pack in the same chassis size, like extra 25%, that's how they able to compete with more advance lithium ion battery in terms of density. however if any of the battery pack expand, (common and unavoidable problem for most battery) it will break the connector easily due to no room for expansion, and it was unrepairable, not covered by insurance as far as in china.

​@@Brendon_MIf Thai prices are the same as other markets then it's 1.2 million baht to buy the car and 800,000 baht to replace the battery either though accident or failure. And be sure LFP maybe a reliable chemistry, but building the pack is a different story.

Hard to fix, but there will be people who do it. Just the same as there are people who rebuild engines or transmissions, it can be a complex job but someone will be able to do it when needed (which should hopefully be a rare occurrence)

Why? Don't you saw the video where the blade cell is punctured with a nail and Don't exploded?

@@augusto_lisboa You don't take any chance risking your life.

Plastic. Pretty thin. There is an image circulating online of a pack which has a hole chewed in the lid by rats

Yeah, I never really planned on uploading the video when I recorded it. It and the editing/voiceover was more of an afterthought

There is always a risk but the blade battery is a relatively safe chemistry and I'm qualified to work on EVs so I know what I'm doing

It's LFP so risk is low.

No pyro fuse. Just the 350A over current fuse inside the contactor block at the front of the pack. There may be a pyro fuse inside the power distribution box under the bonnet but I doubt it as the airbags all went off in this car and after clearing fault codes the car was drivable again

403.2V nominal

Not at all. Though the car is only a year old so I wasn't expecting to see any anyway

Well I haven't burnt my house down yet so that's a good start 😄. I'm with you though, I'd like to get some BYD cells and torture test them to see if they stand up to BYD's claims

the new Sodium based battery from BYD will be much safer.

Someone did that with a Nissan Leaf module, he did a slightly more torture test as he fully charged the pack then used a screwdriver and pierced the pack multiple times, some smoke came out but no fire he then tested the voltage and current and pack was still working, he then tried to burn the pack and only the glue caught fire again battery module was still working!

100% agree. If I was to do it again, that would be the way I'd go

@@Brendon_M ah sorry read the rest of the comments u told that already before. :) still great setup like this and probably learned a lot....

Yes, there is a transistor and 2 resistors at each of the cell taps. Looks like the 2 resistors are in series with each other and are 10 ohms each. The transistor switches them to be in circuit across the cell terminals

@@Brendon_M Thanks, so it’s passive balance circuit, I asked because had cell drift issues (0,35v) when fully charged after half year ownership and not charging every day fully, only once a week and heavy usage of DC fast charging, that why when I look on modules temperatures some of blocks have higher temperature overnight !!!

@@romsa1977 yep that'll do it. It's hard to keep LFP in check without fully charging it because the charge curve is so flat except at the upper and lower ends

​@@romsa1977you should fully charge every 10 charges or so, to allow the balancing to work.

Nothing wrong with the battery. The car was in an accident and written off so it couldn't go back on the road. I'm using the battery for my home storage.

It may be possible with some specialist equipment for the busbars and chemicals to dissolve the adhesives but yes, as far as I can tell if you have a cell die then the whole pack would have to be replaced.

@@xarifa777 I don't think even the manufacturer will be able to replace them, it'll take some very specialised equipment. If a cell fails while the car is under warranty they'll just replace the whole pack and send the old one to recycling then write-off the lost value. Once the car is out of warranty the manufacturer won't be interested in spending time and money replacing single (or groups) of cells for their customers. Instead they just sell a new pack/ whole car. I have no doubt that someone will work out dodgy way to replace single cells but it's not going to be easy and I suspect not financially viable.

@@xarifa777 I agree, while the cells not being easily replaced is disappointing it's a non-issue. I expect the battery pack to outlive the body of the car. Certainly wouldn't stop me from buying a BYD.

@@xarifa777 no, I bought this car (2022 model) after it was in an accident to use the battery for home storage.

Yes, the way I see it is if BYD are willing to make it this hard to replace a cell they must have plenty of confidence the pack will outlast its warranty without issue

I haven't weighed it, but the whole pack is around 450kg

Do you mean the black material attached to the battery itself? Or the plastic under trays on the car?

Black tray under car. Somehow i ran over something which punctured some holes

Well, the tray at the rear has not much under it. The tray at the front has all the connections to the battery behind it but they are all above a piece of rectangular tube so pretty well protected. Unfortunately I don't have any photos

I'll have a closer look when I next get a chance. There's probably a close up in the P2 video but I can't remember for sure...

No numbers on them but yes; they are 64 pin ICs

@@Brendon_M hmm, looking at the BMS board (the current sensing side), it looks like there are two ICs redundant to each other, performing the current sensing and HV measurements. This architecture looks similar to NXP (refer to RD-HVBMSCT800BUN)

Yes, the main board is inside the contactor block at the front of the pack and there are cell top boards running down the side covering the busbars

Not really but it was classed as a statutory write-off so it could never go back on the road

@@Brendon_M was the price favourable enough for a pack, only. Or you need to recoup from parting the rest out?

I won't be parting the rest out. I already have too many car parts lying around my house so I'm trying to get rid of the rest of the car as a whole. The car was more than I really wanted to pay but I got carried away with wanting to do another project. It ended up costing me $11000 by the time it was delivered.

Set me back AUD$11000 by the time I had it delivered to my house.

Yes it is a blade battery but in this case the cells are welded together so unfortunately no, you can't replace a cell without specialist equipment.

126x 3.2V 150Ah LiFePo4 cells 403V total. 60kWh

Yes it is. 126x 150Ah LFP BYD blade cells

It is on the outside but the bottom of the battery pack is a pretty thick aluminium plate

​Thanks

Slot of new solar inverters take a high voltage battery so when these batteries are too weak to run a car you'll be able to just unbolt them and plug them into a solar inverter with a small interface module for communication. It's the way I would have gone if I didn't already own a 48V inverter

I can't see how someone would replace a single blade without damaging everything else.

I was thinking the same. Thanks

Pretty much

I go over it in one of the other videos but - BYD Atto 3 60.5kWh pack 126S 150Ah 403V (3.2V LFP cells) 1050mm wide (1230mm including the mounting flanges). 2100mm long. 125mm tall

No. Quite disappointed in that. Though it is a testament to how reliable BYD thinks it will be

There is a thick gasket all around the outside where the top plastic case bolts down onto the aluminium base and there are O rings around all the connections. The pack also had a couple screw vents on top that equalised pressure when I undid them so the pack is air tight

I'd only do that if I could harvest your body for energy storage 😄

@@Brendon_M Arraki trick,drain your fluids!

Yes, it has 126 blade cells

No idea, I bought a wrecked car and stripped it out

By giving BYD a call or going to their local dealer. Replacement batteries are available. I was initially going to import one of their cars, before I learned of them signing a dealership contract around here.

126 cells (all in series)

@@Brendon_M Obrigado então esse Peck 403,3v qual a capacidade da célula.

Here are all the specifications of the pack BYD Atto 3 60.5kWh pack 126S 150Ah 403V (3.2V LFP cells) 1050mm wide (1230mm including the mounting flanges). 2100mm long. 125mm tall Haven't weighed it but around 450kg is my guess

Maybe, but there are still the laser welded busbars to contend with.

Sorry but no, I am actually using them (just not for this)

Even with how difficult this is to disassemble nobody will be throwing them in a hole. It's too valuable as second life storage and when it's not even good for that there's companies like Li-cycle that have set up quite effective shredders that take whole packs in and output the various materials to be reused. That all being said, I agree there should be systems put in place to ensure ease of recycling.

Look up Ecar battery recycling,brilliant.

LOL! That's my children.