Multiple production lines at different stages of evolution seem to be a popular answer, and the best cells selected from batches. As they iterate the process there are sure to be cells that don't meet certain standards. Musk did hint about "yield" at one point. Which prompts another question - if the number of welds/internal resistance was marginal it would show up as accelerated individual cell degradation when the cells had to deliver power in a car being driven hard.
Cells probably came off different manufacturing lines. One’s been upgraded (faster) the other hasn’t been converted yet, possibly they are running a trial to confirm there’s no issues with the new line. Also there will be only certain scheduled downtime periods, so they may be waiting for the next downtime to upgrade the line.
I always wondered if there was a way to virtually balance the pack, like offset the differences by adding resistance to one series or module/group of series…
Like others mentioned. Probably running older and newer production lines. And grouping batteries together. Likely the lower weld count cell is the newer production line.
Idea to improve laser connection between the top cap conductor and the copper tabs... Spin the cell longitudinally (as opposed to radially) to force the jelly-roll to one end - and laser weld. Obviously requires and interesting setup but should give a good, consistent weld. This process shouldn't be needed for the base tabs/conductor as you can just push down on the jelly-roll through the open top.
The mix is probably the results of changing how the scond gen 4680s are being manufacured as they try to just see how fast they can be built...on differnt lines within the battery shop.These "hybrid packs" a part of ongoing product developmets as they need all the packs they can get...? A simple running change as they dial in the process.
There is only one things i want to know. What is the actual tested specs on the cell and when will the be available on the open market. No I'm not talking about Tesla selling cells on the open market. But that size.
Man who cares about how many welds? Talk about watt density, cost to produce, weight difference between 1 & 2 gen, speed of ramp up, longevity, does it use a dry mixture or does it require solvent evaporation, etc. Welds, geesh
Munro was an interesting channel 3 years ago but has gone 100% Tesla fanboy = Irrelevant as it seems to be almost pure advertisement completely lacking sound criticism.
Sandy has bragged about how much money he makes off Tesla stock. They’re highly biased. Oh, and the charging curve of 4680 equipped vehicles are all absolutely terrible. 😂
If Tesla is doing things well and you say so. You are a fanboy. There is something wrong with that reasoning. Sandy Munro makes money from selling its reports. If they make stuff up, they will not be in business for long. My advice to you is to open your mind to receive information rather than labelling people.
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Three videos in one week?
Sandy Claus did come early!
Seeing Munro Live talk with Jordan G is like watching the Avengers assemble.
Multiple production lines at different stages of evolution seem to be a popular answer, and the best cells selected from batches. As they iterate the process there are sure to be cells that don't meet certain standards. Musk did hint about "yield" at one point. Which prompts another question - if the number of welds/internal resistance was marginal it would show up as accelerated individual cell degradation when the cells had to deliver power in a car being driven hard.
Cells probably came off different manufacturing lines. One’s been upgraded (faster) the other hasn’t been converted yet, possibly they are running a trial to confirm there’s no issues with the new line. Also there will be only certain scheduled downtime periods, so they may be waiting for the next downtime to upgrade the line.
Thanks for this!
I always wondered if there was a way to virtually balance the pack, like offset the differences by adding resistance to one series or module/group of series…
Like others mentioned. Probably running older and newer production lines. And grouping batteries together. Likely the lower weld count cell is the newer production line.
Is it possible that the cells were off 2 different production lines?
very likely
Idea to improve laser connection between the top cap conductor and the copper tabs... Spin the cell longitudinally (as opposed to radially) to force the jelly-roll to one end - and laser weld. Obviously requires and interesting setup but should give a good, consistent weld. This process shouldn't be needed for the base tabs/conductor as you can just push down on the jelly-roll through the open top.
The mix is probably the results of changing how the scond gen 4680s are being manufacured as they try to just see how fast they can be built...on differnt lines within the battery shop.These "hybrid packs" a part of ongoing product developmets as they need all the packs they can get...? A simple running change as they dial in the process.
Why is tesla not in sulfur ion battery chemistry??
Because smart people decided not to
There is only one things i want to know.
What is the actual tested specs on the cell and when will the be available on the open market.
No I'm not talking about Tesla selling cells on the open market. But that size.
Doubt the variable welds is random, most likely there is a reason.
Pull cells from a new car in a year and compare. It should answer all the questions.
Man who cares about how many welds? Talk about watt density, cost to produce, weight difference between 1 & 2 gen, speed of ramp up, longevity, does it use a dry mixture or does it require solvent evaporation, etc. Welds, geesh
Did not know that Tesla puts different sized batteries into one pack and that too at random! Wooo. 🙆🏻♂️
Not the "size", only the number of welds.
8 min of guessing what Tesla is doing.
Rule one, don't buy from unethical companies. You're always better off
Stock pumper - Fan Boy
Don't like? Buh bye.
I prefer pouch batteries over relying on welds .
I like the prismatic cells on my Model 3 LFP.
Munro was an interesting channel 3 years ago but has gone 100% Tesla fanboy = Irrelevant as it seems to be almost pure advertisement completely lacking sound criticism.
Sandy has bragged about how much money he makes off Tesla stock. They’re highly biased.
Oh, and the charging curve of 4680 equipped vehicles are all absolutely terrible. 😂
Maybe he’s just a fan of doing things properly?
@@LakeLake123Charging curve on my Cybertruck with 4680s is WAAAY better than my Model S with 18650s
Why are you here complaining? Don’t like the channel , move on. For myself, I like the content. Of course he like Tesla. I love mine.
If Tesla is doing things well and you say so. You are a fanboy. There is something wrong with that reasoning. Sandy Munro makes money from selling its reports. If they make stuff up, they will not be in business for long.
My advice to you is to open your mind to receive information rather than labelling people.