Tesla 2170 for esk8

It makes me want to take the cell wrappers off so these cells can cool off faster and use thermal silicone to attach to pcb for a makeshift heatsink. Just my wild thoughts

3 Likes

12s4p?

3 Likes

My plan is 12S8P, but I would need to get the double stack enclosure from @torqueboards because the ones I have are too skinny.

3 Likes

How much did you have to cut from the deck to fit 8 wide?

1 Like

Has mooch done a test on these cells? Do we have a definitive safe amp draw for these cells?

3 Likes

I didn’t see it on his chart so I messaged him

2 Likes

The temps are just speculation at this point, just like the discharge ratings.

Based on the the articles I’ve seen, all stemming from that guy’s first Model 3 tear down, which was rife with casual speculation (I’m pretty sure they were working on trying to do a reality TV series about their shop at the time btw, and I’m not actually joking) I would take all of their info with a grain of salt. He’s a bit of a self-proclaimed Tesla battery expert, with a LOT of personal interest (business) on the subject, but no evidence I’ve seen leads me to believe he’s got any direct or even indirect line to the engineers at Tesla, or Panasonic who make the batteries. Admittedly I don’t follow their media much, so maybe I’m missing something…

Mooch on the other-hand, yeah I’ll take that basically as the gospel.

3 Likes

I have yet to see a good spec sheet. Guess thats the problem with salvaged cells that are not available retail.

Found this:
http://m.eleteks.com/sale-10910151d-panasonic-ncr21700a-5000mah-15a-high-drain-3-7v-21700-rechargeable-lithium-ion-batteries-original-21.html

But im not sure if its for these same cells.

2 Likes

Did you get your nickel? @kook :call_me_hand:

https://www.metalbulletin.com/Article/3942915/Teslas-Musk-calls-for-more-nickel-mining.html

2 Likes

He spurned his supplier, who’s now considering hoarding the stuff before Elon jacks the prices. :stuck_out_tongue: :smiley:

5 Likes

all my nickel is being held hostage by that terrorist @fessyfoo we’re sending in the hostage negotiators!!

2 Likes

Has anyone received cells from this guys?
Placed an order over a week ago and no updates on shipping. Email them but never got a response

3 Likes

They should send it out but it took a while.

The chat box works good on their site.

Fyi sale is stock dependent not time.

4 Likes

Ah. Good to know. Thanks for the info brother :love_you_gesture:t3:

2 Likes

This new cell is BIG and chunky

Any guesses on capacity? 10Ah+


(May be closer to 45mm x 75mm)

6 Likes

I love how this is like the maximum size that could still fit under a skateboard/in a hummie cutout, and in a double stack enclosure easily.

10S2P being 450mm x 155?mm x 45mm

2 Likes

Probably way more, just keeping the same chemistry and internal construction it would be around 10 times the internal volume, considering they 2170 cells they already use are close to 5 Ah, this bad boy could have 50 Ah. But I’m certain they will have an improved energy density, people are talking from close to 300 Wh/kg all the way to 350, so from 20% to 40% energy density increase

Maybe the capacity will stay constant at those 50 Ah, but there was a few documents pointing to a higher voltage tolerance electrolytes, just a few tenths of volt higher does wonders to capacity

I have my popcorn ready :smile:

5 Likes

(May be closer to 41mm x 80mm)

2 Likes

what cell is this??

2 Likes