alt Hacker News> the battery retained 81.9% of its initial capacity after 100 cycles
That's really terrible.
It's interesting, but 20% loss after 100 cycles is just not great. NMC gets that at near 1000 cycles. LFP gets that at near 5000 cycles.
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20% loss isn't too bad if you start out at double the capacity though.
I think this would be perfect for race cars. We might be getting closer to a serious EV endurance series.
And how much commercial development have NMC and LFP batteries had since they left the laboratory?
> "That's really terrible."
Not really. At 1270 Wh/L, even with 20% degradation, these cells still retain far more energy than a LFP cell (which are more like 350 Wh/L).
The question is, what happens at 200, 500, 1000 cycles? Does the degradation continue linearly or does it slow down? ... or accelerate?
A car with this battery can easily have a 1000-mile range (a real one, not EPA). So 100 full cycles would still mean 100k miles!
> It's interesting, but 20% loss after 100 cycles is just not great. NMC gets that at near 1000 cycles. LFP gets that at near 5000 cycles.
NMC and LFP had similar issues when these chemistries were at laboratory scale. Give it time and the issues will be solved.
Seemingly adequate for certain drone applications like in Ukraine. They may only need a couple charge cycles, and 4x the capacity is huge.