I hear what you're saying. I wonder if there is a difference between technology price, and product price. What I mean is, a particular LiFePO4 prismatic cell by a particular manufacturer will have a certain list price in the USA. That price won't change much over the lifetime of the product. But at the same time, cells that are not products, but salvaged from say EVs become available, and are much cheaper per kWh than the cell products, but not so tidy to use i.e. more design required. They are cheaper partly because they are salvage, but also they were designed with a lower cost per kWh for the larger volume EV market.
I built a 4s LiFePO4 pack using CALB SE100 cells. I paid basically list price for one cell, sale price for one cell, and a great clearance price for the other two. This was within one year. Shop around.
Posted by: cpcanoesailor@yahoo.ca
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