If they're more expensive and don't last as long then why are they making it the platform for many of their EVs?
because they are GM?
I left their camp after decades of trying their products.
Yep.
Large companies like to make "large" bets on technology. Even if / when they don't fully understand it.
It's a good career booster for folks leading such projects, and betting "big" is easier to sell to the CEO and the Board than making multiple smaller and more flexible investments that adjust to evolving technology and material costs over time. Mostly because budgets are fought over annually, and there is zero guarantee that there will be funding for high risk/high reward project in future years, so if you can, you get it funded once, upfront. Bias towards "big bets" is one of the structural curses of large corporations. So is admitting to making bad "big bets" and pulling the plug on dead-end tech fast enough.
In a weird way, it makes perfect sense that GM/Ford/BMW would do something like that.
Even Tesla did it, when it
"bet big" on 4860 batteries in 2020. A bet that boosted Tesla's stock price after Battery Day 2020 announcement, but is yet to pay off. Tesla barely uses 4860 batteries in its cars due to ongoing production and defect problems that limit output to around CyberTruck production rate (Tesla stopped putting 4860 batteries in Model Y's to save them for CTs).
I found a few articles where GM claimed that their approach with NCMA materials was going to bring the per kWh cost down below $100. Based on 2020 cost of input materials, and fully ramped-up production rate. Well, guess what, a lot of things changed since then, and GM is nowhere close to reaching for scale production.
Scaling up and automating production has turned out to be much harder than GM and LG ever imagined.
It turns out that reaching scale and hitting low cost goals in battery production is harder than building cars.
The leading EV vehicle manufacturer in the world (BYD) started out as a battery supplier. It still is, selling LFP batteries to Tesla and others.
But BYD also expanded into car manufacturing as a side project, and has figured out how to scale that up to take #1 EV spot from Tesla.
Going the other way (automakers building batteries) is, evidently, significantly more challenging.
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