Giving EV batteries a second life for sustainability and profit
This seems like it would be complicated by the many different chemistries and form factors available, and the wide variability between packs depending on how old or well-taken-care-of they are.<p>If one were to set out to create a single large battery out of massive array of extremely heterogenous individual battery packs, what would that look like?  I guess you could pair each battery pack with its own individual charger and inverter so they can all feed into some common bus at a given voltage and frequency -- sort of like the &quot;microinverter&quot; setup for solar panels.<p>You could cut down on heterogeneity by only using one type of battery in one installation, and trade batteries between installations or even with external companies so everyone can get matching sets.  Sort of like the card game Pit.  You could also bin the batteries by quality, like how manufacturers of vacuum tubes have a hard time replicated electrical characteristics exactly from one tube to the next, so they sort them into bins after manufacture and ship them out as matched sets that came from the same bin.