Hi
@AlanSubie4Life , here 10 AM , hope to find some time to work on the harness mounting during the day, but i want to leave you with some info.
A thread i've made here has been moved by a mod in the Battery discussion but was relevant to our discussion:
https://teslamotorsclub.com/tmc/threads/bjorn-charge-test-v3-ionity-lr-2021-lg-chem-vs-lr-2019-pana.215510/
From that thread, in case you've missed i show you that pic:
On the left the LG Chem in question fitted on a MIC LR RWD in july.
Production of the NMC811 format 2170 by LG for Tesla should have started, for the first time, in may or june in Nanjing in a new plnt near GigaShangai. New format, new chemistry.
Right side is a 2019 Panasonic NCA.
The chinese gov oblige to declare battery capacity for some few bureaucratic reasons.
LG Chem: 355.2 V - 216.2 Ah = 76.8 kWh Gross capacity (allegedly)
Panasonic 2019: 360 V - 225 Ah = 81 kWh Gross
This is a well known Pana battery, you can make all the comparison you wants.
As can be seen from the graph, the LG is also castrated in charging speed at the V3.
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Now, the point is, the NMC811 is the new thing and all the chinese builders, LG, CATL, SK innovation, are moving their production to them. Panasonic remained the only one to produce NCA. LG & SK are even legal fighting for those 811. They are fitting it in BMW, etc...
Why's that?
On a separate thread, when i get the time, Jeff Dahn results on 811 & all the info i can get on the 811, the new thing.
Shortly, their values of energy density are the highest now achievable in current production, have the best cycle number & degradation, have the same 80% of Ni of the NCA (so same attitude to fire), but 10% Co rather than 15% so cheaper, and 10% Manganese rather the 5% Alu.
So,
IN THEORY, you're getting right that those battery are highly underrated, because in actual fact they should have more energy than the Panasonic NCA, possibly even the new +5% one, (how they got it? Further increase in Ni?) looking to the reported max energy density for the NMC811.
Independently of what we will find with the update, is clear enough that a bare increase in voltage, possible in every moment outside China (they should re-homologate in China), can largely increase the capacity of those battery, at the least getting the value of the Panasonic old NCA and keeping a margin of safety over them.
A battery is not only made of cells and those batteries are in production in that format from LG only by few months: it's totally conceivable that we are doing the guinea pigs for Tesla, as always, so the battery is at least highly castrated for testing reason.
As far as we know is more than technically possible to increase their capacity by a large number in time trough updates.
Whether this will happen and in what degree, we cannot know, at all.
But for the time being, they have the highest theoretical energy density, lowest price excluded LFPs, and are the most advanced batteries on the market. No wonder Tesla does'nt wants to be excluded.