This is a great opportunity for an aftermarket business. New LFP battery cells are plummeting in costs. LFP cells are also very reliable. Other than the battery

This is a great opportunity for an aftermarket business. New LFP battery cells are plummeting in costs. LFP cells are also very reliable. Other than the battery, electric cars are very durable. Some electric car models (i.e., older Tesla Model S's made during the Mercedes partnership) are actually much higher quality than the current versions. So somebody should reverse engineer the BMS for a popular old electric car model, create a new LFP based battery pack with a new BMS that is a drop in replacement for the old one (that means it is the same physical dimensions and the same electric and mechanical properties), and make the replacement. This will probably void the warranty, but people that need a battery pack replacement are usually already out of warranty. The LFP cells are less energy dense than the NMC cells that are used in most US sold electric vehicles, but they would probably be more energy dense than the completely used up, broken down NMC cells of a pack that needs replacement. So say you have an old 100KWH tesla model S, but the pack is completely screwed and you are getting 40 kwh out of it. The same weight in LFPs should come out to about 70 kwh. Well, people would gladly pay 6-7K for a new 70 KWH pack and a chance to keep their car, than having to shell out 80K for a brand new Model S that is made at a time of cost cutting and decreased production quality at Tesla. It seems like complex thing to do, but it is entirely possible. All the parts are available. Power electronics are no longer back-ordered to oblivion. And it seems something that is much more useful and potentially lucrative than dozens of crazy dumb car modification projects I see people do for views on youtube.