@nic221 There's a lot of service left in "End of Life" Li banks (<80% of rated capacity available). Some #vandwellers have been reusing EOL EV banks as storage for a while. As the article points out, the decreasing cost of new has affected this somewhat but it still makes sense for some use cases.

I'd be more comfortable running used LiFePO4 than the more-volatile Li-NMC, etc.