Oh I'm well aware of the expected life of lithium cells. I have around 75kWh of lithium batteries storing capacity from solar and running my house. The batterie

Oh I'm well aware of the expected life of lithium cells. I have around 75kWh of lithium batteries storing capacity from solar and running my house. The batteries are a few years old as best I could tell, salvaged vehicle cells. I wouldn't recommend expecting more than 10 years out of cells if they're used regularly. Manufacturers will happily lay out math that points to 15-20 years of regular use, or even more, with 80% capacity. Take a look at what they're willing to warranty and its usually in the range of 5-10 years. I do expect that we can find a storage solution that would allow us to make a huge dent in fossil fuel use, though I also expect we're decades off. We likely need a different battery chemistry all together, and even if it is lithium we will spend decades trying to mine enough lithium for replacement and by then the original batteries will have aged out. Solar has a similar problem unfortunately, the materials we use today aren't mined at a rate anywhere near what would be needed to replace existing power plants and by the time we can mine materials and manufacture panels the we'll be starting over replacing the earlier panels we installed. > And you are not gone get people to not buy new cars This right here is the fundamental problem. We'll never see people at large give up convenience or shiny object syndrome in favor of the environmental concerns they may feel so passionate about. Reducing energy use isn't that hard, we just have to be willing to sacrifice.