Tesla's new 4680 - We're gonna need a bigger flashlight

Thanks. Here’s the actual break down in intelligence: “because we couldn’t figure out what it was for, we just assumed it wasn’t for anything.”

OT
This is the first time I have ever heard Musk speak. It so often happens with famous rich people that no one can give them bad news, like, “I am sorry, Mr. Jackson, Propofol is not something you can have; it requires an anesthesiologist to administer, you have no valid need for it; it would be illegal… so, no.” Someone should tell Musk, and make certain he understands that it matters, that he can’t speak for sh!t, and that he should actually put effort and time into improving that, as doing it well can be learned, and it would benefit his enterprise immensely. The worst thing a smart person can do is assume they know everything, and then surround themselves with yes men with no ability to tell truth to power.

True, compared to vehicle demand, power tools won’t drive this. And these cells certainly won’t be showing up in your average drill kit. But they’d be great for cordless lawn mowers and other large tools! That kind of application should provide at least some incentive to mainstream this size of cell.

Might be useful for electeic scooters.

nice info for new 4680 from great Dave

Dave started off from that same slide that only shows what Tesla get from the larger form factor. Everyone keeps making the same mistake.

That slide does not include chemestry improvments.

The real prototype cells do much better.

He does note that x5 and 16% seem too low…

nice explanation of the copper tabless anode with the dunny roll though I was curious why the copper looks like that folded on its self

Tesla won’t be the only 4680 manufacturer. They contracted Panasonic to build them as well:
https://electrek.co/2020/12/27/tesla-tsla-4680-battery-cell-produced-panasonic-report/
And LG hints at making them as well:
https://electrek.co/2020/10/21/tesla-battery-supplier-lg-chem-prepares-to-triple-cylindrical-cell-production-own-4680-cell/

Does that mean we’ll have access to them?

  • Neils Bohr

I did some calculations…

2x 4860 @ 165A each = 130K Lumens (18 XHP70.2)

2x 4860 @ 165A each = 151K Lumens (26 XHP70.2)

Now imagine 6 of these beasts!

165 Amps ? my god… a nuclear reactor pulls less. :open_mouth:

Nah. Bore out a Q8 to get rid of the cloverleaf cutout inside and leave just a 49mm or so circle, and it’d drop right in.

Just saw this video from these new cells.

And a video from Tesla Daily about that video:

You gonna tighten it down hard enough to stretch the battery tube 15mm? Your muskles are bigger than mine.

Soda can lights with 150k+ lumens are perhaps within reach with Elons new cells. My 10-20k lumen lights get slightly warm fast, 150k would be akin to holding molden lava?

The Q8 has those big honkin’ springs for the individual 18650s, to make sure even different-length cells are firmly smooshed up against the top ring.

Ditch the springs and that insert as well, a small group of nubbins right on the end-cap to make contact with the negative end of the cell is all that’s needed.

Hell, a sprinkling of a few belleville washers, a crimped/bumpy/crunkled thin sheet of Cu, anything shallow but that makes good electrical contact, is all that’s needed.

At least it’s a start. Any mfr could make a variant of the tube to fit one of those donks, bored out and marginally longer if needed.

Was gonna add, the SD05 SD01 also takes 4×18650 and has a 1-piece body, no end-cap! So the cloverleaf board is pretty much dropped down the hole and pressed into place. Same dealy, but no worries about another cap and another set of threads. Might even be thicker stock that can afford to be milled down a few more mm.

Academic, though, as no one seems to actually have one of those cells to measure exact length.

SD05 takes 4 cells? Which SD05?

Dee-oh!

SD01.

There’s no way a soda can light with one of these cells will do 150K Lumens. My guess would be 40-50K but could be more. Depends on the performance of the cell really.