[HPsquared]

That's pretty clever.

It leverages the fact that most people make a large number of short trips, and a smaller number of long trips.

Also if it's modular enough, this design could allow replacing one or the other battery if the user does lots of short trips, or lots of long trips.

Also could let the manufacturer do market segmentation, e.g. a high performance model with no LFP, and both parts of the "high-performance" chemistry - and a base model that's 100% LFP.

[callalex]

Considering that you can’t even change the 12v lead-acid battery in a BMW vehicle (ICE nor EV) without paying the dealer for programming, or some extensive hacking, I don’t hold out much hope for modular replacement.

[extraduder_ire]

Reminds me of how some SSDs do wear levelling, where they treat cells like they're one bit while the drive's empty and go up to four bits per cell as it fills up, with a speed penalty.