Battery compatibility: City-17A vs Leisure-20A vs X-19.2

Jack99

New Member
My wife and me both want a new ebike, with interchangeable batteries. Goal is to have the opportunity for one of us to go for a ride with an extra battery. Rize site explains that Type A batteries are compatible with City, Leisure and X. 13A, 17A and 20A are interchangeable.
If I go with the X and my wife with the City, what will we have to do to exchange batteries on our bikes (compatibles but not interchangeable according to Rize site)?

I think that Leisure-20A and City-17A are interchangeable, but I'd prefer the X...