Is this pertinent?
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Nope. We vape mostly power-tool cells. At present, Tesla is pretty much the only EV maker that uses cylindrical cells, and theirs (which are actually Panasonic's cells) are more optimized for mAh capacity than CDR. Pretty much every other EV manufacturer is using large-format prismatic or pouch cells.
This may no longer be true, or at least completely true. Or may become less true this year, or something anyway. Data is scarce that I’ve been able to find.
I’ve been looking at the upcoming Mini Cooper SE electric for possible purchase as it’s apparently a 2019 bmw i3 with no range extender and crucially for me larger interior with bigger doors. The 2019 i3 battery pack is apparently Samsung “li-ion”, (only details I’ve got) and in illustrations at least (still looking for photos) is packs of cylindrical cells.
Illustrations can be BS and “li-ion” is a grotesquely inadequate descriptor IMHO.
It would take more than a handful of car models to surpass the tool industry when it comes to li-ion cell useage. They have been using these cells much longer than the auto industry and are invested much more heavily in these style batteries. That may change in the future, but it will take li-ions becoming more of an industry standard in the automotive world, which could take some time.
I worked construction for quite some time, and just one job site can go through a surprising amount of battery packs in less time than you would think. Construction workers are really hard on them. I know some contractors will buy them in bulk and have a lot of them in rotation at the same time to help extend the life of the packs (and to eliminate any down time from having to wait for a pack to recharge). If you add up all the construction sites using these cells, it would boggle the mind how many of these tool battery packs are out there.
I worked construction for quite some time, and just one job site can go through a surprising amount of battery packs in less time than you would think. Construction workers are really hard on them. I know some contractors will buy them in bulk and have a lot of them in rotation at the same time to help extend the life of the packs (and to eliminate any down time from having to wait for a pack to recharge). If you add up all the construction sites using these cells, it would boggle the mind how many of these tool battery packs are out there.
I'm using Makita and Bosch tools every day with those packs and I opened many of them and salvaged used packs to use in led and power bank applications and a month ago a few new ones for use in mods. This are 20A 2000mah batteries that don't even get worm when i vape or charge them and it's understandable because we abuse them way harder when we use them in the tools and the charger which can charge the big 4A makita battery in an hour. It's a dry electrode tech which makes the battery more efficient, more stable, more cappasity, more safer, no cobalt and cheaper to produce.
The new Tesla 21700 are not for us as they're only 2.8V and low cdr but i believe the tech in them will get to our batteries too in a few years.
IMO we're not gonna get any new holy grail batteries any time soon, at least 2-3 years and as Mooch said the industry doesn't need more than 35-40A cdr batteries because for now with the tech we have for high cdr you need to sacrifice cappasity and i don't feel the need for more power especially if it mean changing the battery more often.
The new Tesla 21700 are not for us as they're only 2.8V and low cdr but i believe the tech in them will get to our batteries too in a few years.
IMO we're not gonna get any new holy grail batteries any time soon, at least 2-3 years and as Mooch said the industry doesn't need more than 35-40A cdr batteries because for now with the tech we have for high cdr you need to sacrifice cappasity and i don't feel the need for more power especially if it mean changing the battery more often.
Where did you get that info? I'm not aware of any Li-ion chemistry that's 2.8V.
I don't think so. Sure the flashlight hobby people are quite vocal and avid users of high-drain Li-ion cells, but that's hardly an industry worth mentioning, and it's certainly not the industry the cells were designed for.
I remember reading something like it, though I forget where. It’s not a bog standard chemistry though. Iirc it’s aluminum lithium cobalt, or something.
But i searched a bit more and i'm not sure the 2.8 is for batteries it may be for the super capacitors.
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The Maxwell acquisition has nothing to do with Tesla's existing 21700 cells, which use Panasonic's tech/chemistry. I'm confident their current 21700 cells are "3.7V" cells just like we use, albeit optimized more for capacity than CDR. I believe they'd work just fine for low-wattage vapers who are pulling 10A or less.
Yes as far as i know they're still using Panasonic 21700 and yeah low wattage users probably can use them but there is no chance we'll see them because Tesla is buying everything for now but they are most likely gonna end this partnership and switch to making the Maxwell batteries soon and after Toyota will take it all.
well nitecore is famous for its lamps and hand lanterns, also they make or re-wrap batteries, actually i did met the brand because of their chargers, they were used by the security department of an old job,
Regards,
With the quantity of Li-ion batteries that electric cars use, I wonder how many per car they use and how long they last? Seems like replacing all of those batteries every 2 - 3 years would be VERY EXPENSIVE.
and also depending of the recycle or dispose method will hurt the planet, compared to petrol hybrid or electrics are supposed to be more eco-friendly
The largest 90-100 kWh packs in the Tesla Model S and X used over 7000 18650s each.
Lifetime is pretty good, aided by active thermal management to keep the cells from getting too hot and pre-warming them prior to charging if they are really cold. Something else car manufacturers to to extend battery life is to limit charge voltage and depth-of-discharge. I've looked at this on another brand of car that's a plug-in hybrid. Its battery is warranted by the manufacturer for 8 years or 100,000 miles. The BMS in that car considers the cells "full" at barely 4.0V, and "empty" at barely under 3.6V.
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