π / e
4×18650 would be about 44mm×65mm.
3×21700 would be about 46mm×70mm.
So a sody-pop can light meant for 21700s would be a wider barrel and a bit lest to bore out.
I think James has a strong point. It's fun to conjecture about flashlight applications but the reality is Tesla is scrambling to produce enough for their in house applications. They are hugely delayed in ramping up 4680 packs across their model lines, especially the ever so delayed Semi and Cybertruck. I think outside of the Tesla factory availability will be nil, which renders flashlight applications a moot point. It's fun to dream, though....
Tesla should make a flashlight that plugs into their car like the umbrella in a rolls Royce
....a 1S2P 2x 4680 battery tube for the BLF GT 94X is my dare to dream.... 
Rivian already does this in their R1T/R1S models. It's a tube style 3 mode that is hidden in the driver door. Also a detachable Bluetooth battery powered party speaker integrated with the audio system in the center console between the seats.
That electronical pickup-truck (Rivian?) had/has that.
Ah, good, I was right. :laughing:
As weird as it was, the Pontiac Aztek had a shiiteload of good stuff attached, depending on the model you got. One had a built-in canopy/tent/whatever for camping, tailgating goodies, etc. Dunno about bluetooth speakers, though.
People bitched about its looks, yet the Nissan Juke was even uglier, yet never got as trashed about its looks as the Aztek.
Compared with soda can arrangement: Tesla's new 4680 - We're gonna need a bigger flashlight - #17 by thefreeman
Breaking bad did the Aztec a lot of favors, even though it was discontinued by then.
BAK showed pre-production 4680s last spring and claimed they would be in full production by, well, now. LG and Panasonic have publicly stated they will make them, for whatever that’s worth.
Will Tesla try to use all the capacity of all those manufacturers for a while? Most likely, but that was probably the exact same situation as the 21700 initally, too. No guarantees a much bigger, more expensive battery will go the same way, but I gots lotsa 21700s and lights that use them. So, Ima keep dreaming.
Panasonic’s mockup was shared part way up the same page of this thread. Was there a different way you are hoping to see them compared?
Tesla, and now BMW. Not exactly a huge percentage of the overall auto market, but it could be a sign the 46xx is catching on.
They disassembled one cell:
That is one serious big ass cell when you see it in his hands 
It looks like a big fail to me, both for flashlights and EVs, but we’ll see how they hold up thermally and under road vibration.
The dry coating can crack during roll up and look at all the bending and welding of tabs—its a manufacturing poopshow. i’ve read reports are that Tesla can’t make them, only Panasonic can produce these monsters.
Then they glue the cells so tightly into a pack with welded terminals—good luck getting one out without cracking something.
Hello
I just saw this on FB:
I don’t know if this is Tesla battery, but it is 46800.
Kind regards
2 Thanks
This light does look interesting, i’m assuming the price is that high due to it being the first of its kind. Realised its a lumintop product, hence the price. That battery says its rated to 15kmah. The tesla spec was 5 times capacity of the 21700, so ideally this should be 21kmah - 25kmah. I definitely think there’s a place for 46800 batteries in this hobby, and hopefully as time progresses the quality of the batteries and price of the lights improve.
A baffling math error on the diameter…
46mm / 25.4 mm/inch = 1.81" diameter.
Yeah, 15Ah is disappointing. Tesla’s cells are supposed to be 25Ah while ~21Ah would be the same density as 26650 cells. EDIT: Looking at the product page the cell features integrated USB charging so a chunk of the nominal cell volume is being consumed by the charge/protection circuit.
If the hype about Tesla cells is true they represent an interesting combination of good energy and power density. A ~90Wh cell capable of even 3C discharge would make for some interesting possibilities with active thermals.
Very interesting. Weird they offer buying options with or without the cell. If you bought it without the cell, where would you get your own 46800?
It’s apparently significantly lighter weight than the 4x 18650 GT3 without cells. I suspect that also has to do with it being single emitter and maybe just a different head design, though the body tube is undoubtedly much lighter. I wonder how the weight compares with cells.
But yea, 15000mah is roughly equivalent to 3x 21700s, so I’m having a hard time thinking of what this offers that 3x 21700 wouldn’t, beyond just being a safer design compared to batteries in series.
As far as discharge rate - the SFP55 in the nightwatch NI03S pulled 51A from a nealsgadgets lishen LR2170HP, getting 13,000 lumens at turn on. So, if lumintop is claiming 13,000 lumens, then the 46800 battery is probably pushing around the same ~51A.
So, fairly tepid performance no? I mean, 51A isn’t nothing lol, but it’s not outperforming what the highest-drain 21700s can deliver, and I doubt it’s outperforming 3x 21700s in series.
I think we still have to wait and see if there’s going to be any 46800s that actually live up to the claims more, though to be frank I’d take any Tesla claims with a big grain of salt given their track record of overpromising.