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In summary, a new medium-density chemistry of pouch cells can retain 90% capacity after 5,000 cycles at 100% depth of discharge. In other words, trading off a
by zaroth 7y ago
In summary, a new medium-density chemistry of pouch cells can retain 90% capacity after 5,000 cycles at 100% depth of discharge.
In other words, trading off a bit of range (e.g. a Model S goes from 360 to 300 miles) to get batteries that can last for 1 million miles, or alternatively, grid storage applications that could run for 20 years.
The speculation is that they make a different battery just for fleet (Robotaxi) deployments, or possibly the Maxwell tech could offset the range loss, since releasing a lower range battery to the consumer segment is somewhat of a hard sell.
This work is from Jeff Dahn’s team which does research for Tesla, which has claimed they will deliver a million mile battery next year. Presumably this could be an option for high duty cycle vehicles that could be charging multiple times a day.