What's inside a Tesla Model 3 Battery?

[@JRP3]

I hope you weighed it and did a full charge/discharge cycle to test capacity and Wh/kg.

[@henriksegercrantz362]

Energy density includes volume which as you say is bigger too.

[@AustinCooper90]

Henrik Segercrantz I caught that too. He probably meant to only say “Energy” and added the word “density” by mistake

[@henriksegercrantz362]

You are right.

[@slevinshafel9395]

This two data most be considered in battery energy density: Energy density of 260Wh/kg. 680Wh/L

[@chubstheclown]

The jelly roll isn't just longer. It is also wider.

[@dogphlap6749]

+chubstheclown Exactly, my maths says 33% longer and 8% wider so around 40% more capacity than an 18650 and that assumes the chemistry is no better in that regard. Of course the cell takes up more room so Tesla won't be able to put as many 2170 cells in the same size battery pack. I guess overall the new cell format must be a worthwhile improvement or they would have just stuck with the 18650s.

[@Phoenixklinge]

less cells -> less manufacturing -> cheaper packs

[@tarstarkusz]

Which means this is not 30% more energy dense than the 18650. The energy density is more or less the same. It is dictated by the chemistry and not the physical shape. It may be cheaper to do it this way, but it has nothing to do with energy density.

[@Phoenixklinge]

tarstarkusz density of the pack might change with formfactor though

[@tarstarkusz]

No, it does not change the energy density. You might end up with lighter cells, but that is from the metal of the can it sits in and has nothing to do with energy density. Energy density is watts per kilogram of the electrolyte material.

[@paulhabsch6286]

If you have any more, any chance you could provide any charge/discharge tests of the cell?

[@tarassu]

What was the precise weight of that cell?

[@thomasdowd2183]

Interesting dissection, but we're really all dying to know: - Mass - Current vs Voltage discharge curves - Mass-specific energy density - Volume-specific energy density Please comment if you have this information. Thanks

[@professoreggplant9985]

Ask electroboom, AvE, Mark Rober, Applied Science.

[@neutronpcxt372]

1. 68-69g. 2. 5Ah cell with an average voltage of 3,6V. 3. Energy density of 260Wh/kg. 4. 680Wh/L.

[@JK360noscope]

@@neutronpcxt372 these numbers thooooo

[@MCSGproject]

Damn for one of the most difficult and complex feats of engineering, it's so simple inside. Important to note that every single detail of the form factor and chemical composition of the batteries are scrutinized over in R&D labs.

[@jabariseaforth8871]

Well done, you took the positive parts of the negative comments from the last vid and improved, cool.

[@daniellewin5096]

1. the holes for gassing: water vapor is detrimental to the electrolyte and cell lifespan, how can it have vent holes? 2. secondly what is weght of case to weight of jelly role?

[@patientestant]

Daniel Lewin, I think there is a real that ruptures, then the gases escape from the three half mm holes.

[@MikeTrieu]

Given a small enough pore size, water vapor cannot permeate a membrane (at standard ATP). Dunno if that's 0.5mm, but that's the working theory.

[@ShaunRF]

The Powerwalls and Powerpacks are also built at the Gigafactory, and they are known to also use Samsung cells of this format type. How do you know this is from the Model 3 line and not a Samsung cell from the storage products?

[@ek9772]

Great job. I don’t have access to these batteries, but I would love to get detailed info. Any chance of doing a video where you weigh the empty cylinder as well the the stuff inside? Could you, also, provide the internal volume of the cylinder? Precision and accuracy would be greatly appreciated.

[@deanburrows3504]

These cells are only rated at 10amps constant, I'd like to know if they can handle more without overheating

[@slevinshafel9395]

so the energy per volumen and weight is...? Why Tesla dont make cubic baterry than cilinder? He dont lose energy from the corner when he packing it? If he make cubic batterry can fit better when put in the large case. He make cilinder because heat dissipation?(corner missing = more airfllow or liquid flow)

[@Cloxxki]

It's all a balancing act of effects I suppose. Round is more efficient in use /kWh of the most dense material needed, the can. How you're going to cool them and how much colling they'll need based on usage, chemistry, etc.

[@bertonvite]

This isn’t a model 3 cell, look at the tear down of the battery pack and the positive terminal is very different... probably not a Tesla battery at all

[@robogoofers9131]

1:40 What's "tap welding"? Just looks like spot welding to me.

[@MikeTrieu]

He probably just screwed up pronouncing "tack welding", which is actually a thing.

[@SuperRagadon]

metric plz

[@ipissed]

Learn more than one system and quit expecting people to conform to your opinion of what is best. You sound like a big crybaby complaining that you are too stupid to learn another system.

[@stevelingeman8870]

Reliable sources, as well as the NIST and the ISO tell me you can multiply inches by 2.54 to get a pretty good approximation.

[@Fpvfreaky]

Cool. Thanks for the info dude.. have you got any more.? And if so what could you build hmmm🤔

[@HmmWao]

i think it will have more than 30pecent extra storage capacity film is 36 inch long which is time and half then the film in 18650 also width will be incresed by 5 mm

[@chandraprakash2658]

Why does copper anode does not have any graphite layer

[@daniellewin5096]

the cid fuse in the lid should also be shown, small holes are not for gas release only to pop the cid fuse , please search '18650 cid' in youtube then update the wrong info in video, i only just discover about cid fuse. if cid fuse pops that cell is out of action, may play a large role in loss of capacity in a pack. how to tell in tesla pack if cid fuse has popped?

[@daniellewin5096]

maybe no cid fuse can you tearown the lid?

[@borisdemelo]

How did you get it? Is there anyway to say that it’s definitely a Tesla battery and not some other 21700 cell?

[@Markle2k]

Go back to the beginning and pay attention at 0:03 in.

[@ZubinB]

Probably a defective cell that was trashed.

[@kazedcat]

Normal cell have a more complicated cap with PTC and CID. Tesla cells are simplified plastic and aluminum cap

[@SevenDeMagnus]

Amazing. Is there a way you con you buy one cell Tesla battery? Is there any Panasonic logo inside? :-)

[@kishoreinhere]

nice video..which is the cathode and anode?

[@TM3Life]

May I ask where you got your battery and where I might be able to get one? Thanks!

[@felro92]

You sure its tesla model 3? Should be 21mm diameter then since they announced to use 21700 instead of 20700. Or did you just measure not that accurately?

[@rich13k81]

I also think it should be 21 mm diameter...

[@Fliptality]

Model 3 uses 21700

[@bridgitwolf5275]

Can anyone tell me what part is the separator? Is it the film that the "jelly" is pasted on?

[@zezizarjaars]

First thing I would have done was measure the voltage

[@Cloxxki]

Isn't that kind of a given? Amps and Ah, though...

[@imajeyelectrical581]

nice video but i didn't get that where is seperator , anode , cathod

[@neutronpcxt372]

The separator is the white sheet.

[@DavidHager1]

2:20 forbidden fruit rollup

[@ariesrc1536]

Tastes acidic, like lemon ;)

[@jieliu323]

tihs is not a Tesla 2170 battery , look at its positive cap and negtive cap, both still like 18650 design; from what found in teardown , both cap are flat , there is no triangle construct in the positive , and in the negtive, there are three scotchs.

[@luongmaihunggia]

How much does it weight?

[@themodfather9382]

46% not 33%?

[@stevemartin8994]

Great video

[@dandeetorregosa4185]

now they called bit 21700

[@sagarmeena0210]

great info

[@Cloxxki]

Did you make exacter measurements to define energy density by mass and volume? Did you ever compare energy and current they can take, in and out?

[@kaylajunipermae713]

nice job skrub

[@emanuelmilian5512]

Y los carros de tecla tienes cientos de esos, increíble

[@pangrac1]

Weight, size, voltage all that is missing!

[@teunlll]

Google. I could give you any info about the 18650 cell because i opend en tested alot off those

[@tarunrad]

What's the capacity in mah ?

[@izybit]

Tree fiddy.

[@rajatverma360]

Nice

[@harmhoeks5996]

What do you think tesla glueing everything. Unrepairable ) :

[@Northrop-Grumman1991]

Tesla doesn't make the batteries used in their cars Panasonic does

[@tapaspal2000]

Tesla Model 3 Lithium-Ion 21700 / "2170" Cells Put To The Test! kzbin.info/www/bejne/Z3m7nJyZgbSoj7c

[@jamesg8246]

This guy calls "half a millimeter" holes impressive.... that's .020" holes. Hardly impressive.

[@josephintravaia7670]

All this jelly roll talk makes me want to go home to the states and strait to dunkin donuts

[@pescadorsp]

This is not the cell used in Model 3. This is not a cell built by Panasonic at Gigafactory.

[@martinandreaskruse]

And you know this because?

[@markp8295]

I'm honestly interested to know own why you think this. I would agree were taking this at face value based on faith. So I'm Sirius what makes you sure.

[@Cloxxki]

Sirius? :-)

[@DavidLinn]

what's the big deal? it's the inside of a battery

[@WatchThisBefore]

YOU COPIED WHAT'S INSIDE. NOT EVEN ORIGINAL CONTENT. DISLIKE