April 24, 20242 yr May be we can learn something from the auto industry. The unknown in this research is what sub type of lithium were tested. Cycles look like NMC.
April 25, 20242 yr The Tesla long term stats are also interesting, mostly it seems degradation is a lot less than I expected. Tesla is mostly NMC, with the lower spec Model 3 switching to LiFePO at some point IIRC. https://maartensteinbuch.com/2015/01/24/tesla-model-s-battery-degradation-data/
April 25, 20242 yr Author 6 hours ago, P1000 said: What do you expect to learn, given that it's a different chemistry for most? I am not so sure all those 15 000 cars are using NMC as per the Leaf and Tesla. AFAIR the BMW i3 was launched with phosphate. We also have a lot of NMC batteries in use on inverters bought a few yrs ago. Edited April 25, 20242 yr by Scorp007
April 25, 20242 yr 1 minute ago, Scorp007 said: I am not so sure all those 15 000 cars are using NMC as per the Leaf and Tesla. AFAIR the BMW i3 was launched with phosphate. We also have a lot of NMC batteries in use on inverters bought a few yrs ago. Yes, exactly. There is no information to gain from this, there are too many uncontrolled variables. Many users, myself included, have already passed the "expected cycles to 80% capacity" column on your table, with no measurable capacity loss on their BESS system.
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