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

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?

https://www.greencarcongress.com/2022/09/20220910-bmw.html

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 :open_mouth:

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

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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.

You are saying “in series” but the equivalent 3x 21700 configuration would be arranged in parallel, not in series.

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Well, that’s just stupid. If they had taken a standard battery, and tacked on the charging circuit, that would be annoying, especially if a standard 4680 ended up too short to work in their light, but getting a custom, lower-capacity battery so that their end product is 4680 is really unfortunate.

At $136, I’m not buying one, but it’s still exciting. If Convoy or Sofirn do anything similar but more affordable, I’ll probably try to convince myself that I need one.

ETA: Hit send too soon, but I meant to say, with the current scarcity of 4680 chargers, I can forgive a charger integrated with the battery, even though that’s a deal-breaker for 18650 or 21700 for me.

Ok. But being able to arrange 3x 21700 in either series or parallel is an advantage over 46800. 3x21700 in parallel could push 51A as well. Why is it not fair to compare 3x 21700, in series or parallel, to 1x 46800?

I guess I’m having a hard time understanding your point. Or rather, what it has to do with what I said in terms of comparing the batteries.

3x 21700 in series is not equivalent to a 46800.

3s 21700 does not provide 15Ah at 3.7V nominal, it provides ~5Ah at 11.1V nominal.

The equivalent arrangement of 21700 cells is 3x 21700 in parallel. This results in ~15Ah at 3.7V nominal.

If the Tesla cell is >15Ah, then 3x 21700 in parallel are still not equivalent, at least in terms of capacity.

I never said it was equivalent, I said it was comparable. I was speaking in terms of real world performance in a flashlight. Sorry I guess that wasnt clear? Again, is it not fair to compare them in terms of how they perform in a flashlight?

And I was talking about the lumintop 46800. Was that not clear either? Sorry.

I dunno. I am I crazy to compare 3x 21700 to this lumintop 46800?

I’m having a hard time understanding your point as it relates to what I said about the lumintop GT46. To try and be clear - my point is, I don’t see how the GT46 being 46800 with the lumintop cell is a significant advantage over 3x 21700, in whatever config.