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I took a peek at the latest offerings as I do every couple years and am very disappointed. Not only have prices not decreased over time, but many products are discontinued. Maxwell has nothing between 600F and 3000F, so those 1,500 farad caps that seemed to be a sweet spot for car starting applications is no more.
I still have no idea what Tesla did, or intended to do with Maxwell.
On a related note, I somehow drained my LiFePO4 7.4Ah battery in the Acura overnight, and the next morning my wife wasn't able to start the car (it was nearly flat dead). I jumped the car to get it going, and on her way to work one of the cells blew. Learned that massively exceeding the charge rating does not end well.
All of that could have been avoided if only I had 2 batteries available. They cost ~$20 in parts, so having multiple is nothing. Then I could swap in a standby unit, and gently charge the dead pack.
Stranding my wife with my experiment probably ever so slightly motivated me to purchase a new vehicle, even though that's irrational.
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