Yeah, it sounds like you have a couple options. You can return to the station you swapped your battery at and get your old one back. You can also decide to keep the battery and you will either end up paying a certain amount of money that is determined in how much better condition the battery you have now is than your old battery or you can pay to have your old battery shipped to wherever you are.
If that's the case how they avoid storage costs for the batteries in the automated retrieval system? What's the upper limit on batteries that can be kept at a single location? What about a two week plus trip?
I don't know what the limit is but I think they said 50 batteries to start with more added at a later date as needed. But yeah, I would assume they might need to end up charging for leaving your battery there for an extended length of time.
