I didn't see a number for cycle life. That'd be my biggest question here. You can charge in less than 7 minutes but how many times before performance (capacity) degrades?

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phh 5 hours ago | parent | next [-]

TFA says "After 1,000 fast charges, the battery should retain more than 90 percent of its original state of charge, the company said."

I can't really judge whether 1000 charges is a reasonable target for a car, though i think that 1000 fast charges is reasonable. It should probably be able to push to 5000 slow charges and 500 fast charges, which should fit a lot of use-cases.

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dgacmu 4 hours ago | parent | next [-]

If you get 400km per charge using 88% of the battery (98% -> 10%), that's 400,000km (258,000 miles) before you're down to 90%, at which point you have likely worn out an awful lot of other things with the car.

Admitting that I have the luxury of an urban, low-driving lifestyle: I'm 50. That battery would literally last the rest of my driving life and have room to spare.

	▲	JMKH42 4 hours ago \| parent [-]
		Understanding battery degredation takes a lot of nuance. If you do nothing but charge and discharge quickly at some given temperature, you degrade to 90% in 1,000 cycles. But the battery also degrades over time, the hotter it is the more, the higher the SOC the more. So you have to add on that calendar degradation, to that 10% loss from just charging. Total degradation in practice will vary a lot, based on users charging and storage practices. Most of the time in practice it seems some fault will brick a battery before it degrades too much in total capacity.

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xoa 4 hours ago | parent | prev | next [-]

>I can't really judge whether 1000 charges is a reasonable target for a car

I mean, if "charges" is "full charge" and the battery pack does even 200 miles of range then that'd be 200,000 miles right? And more like 250-300+ miles seems like a spreading target as energy density ticks upwards.

Honestly that's more than I've ever put on any single individual car or truck I've owned, and well into the point where I'd be expecting to put real money into engine and other work for an ICE. Sure more is better but if a battery pack can go 200k-300k miles keeping 90% range that doesn't feel unreasonable at all for non-commercial usage. Taxis and so on with much higher utilization may find value in alternative options of course.

	▲	NetMageSCW 3 hours ago \| parent [-]
		That’s also a 1,000 fast charges, which shouldn’t be relevant to non-commercial users.

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baq 4 hours ago | parent | prev [-]

1000 charges 10-80% for a passenger car at 300-400 km per charge is 300 000 - 400 000 km of fast charge driving. I'd say it's perfectly fine for most people?

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BackacheDescent 4 hours ago | parent [-]

Did you miss a 0?

	▲	baq 3 hours ago \| parent [-]
		I have! Thanks

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est 5 hours ago | parent | prev | next [-]

China had many >1M KM electric taxies. Usually they degrade after 200,000 km, and they are like 2 generations behind the latest ones.

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djcannabiz 5 hours ago | parent | prev [-]

right at the end “After 1,000 fast charges, the battery should retain more than 90 percent of its original state of charge, the company said.”