Yep. Interesting that a 3rd party has developed and released a LiFePO4 battery pack for the Prius [0]. It is cheaper than the OEM NiMH pack. I'm on some Prius forums and it has been interesting to see the amount of detail owners get into, from replacing cells in their OEM packs, to upgrades, to eeking out every bit of performance. Toyota had a huge advantage with their brand and some fanatical customers that they totally blew by not going full EV.

[0] - https://projectlithium.com/products/prius-lithium-replacemen...