Two wheelers already do this in many places. Gogoro is one option where you just pull up to a station, put your old battery in, and it'll tell you which fully c

Two wheelers already do this in many places. Gogoro is one option where you just pull up to a station, put your old battery in, and it'll tell you which fully charged one to pull out. If the station detects bad health or battery life it'll recycle/replace it the next time someone visits.