I guess the use case is that a flight school could have 2 planes & 5 batteries, and get more student flights into a day by not waiting for charging. Operating from one fixed base, one owner, so no issue with getting someone else's pack. 126 kg, so not trivial to remove.
https://en.wikipedia.org/wiki/Pipistrel_Alpha_Trainer#Alpha_...
I guess the use case is that a flight school could have 2 planes & 5 batteries, and get more student flights into a day by not waiting for charging. Operating from one fixed base, one owner, so no issue with getting someone else's pack. 126 kg, so not trivial to remove.