Chinese car company NIO and SF-base Ample are in the business of battery swapping. But they think in terms of storing multiple varieties of batteries. More: https://sevehicle.medium.com/where-a-charging-infrastructure-will-be-hard-to-buld-swapping-might-be-helpful-a34861d9d7d7

The principle? EV is basically an oversized ‘toy’ car. Use standard batteries.