Gotcha. Yeah, you get a notification from which you can swap mode. Default being charging only, for security reasons. Also, android encrypts the filesystem by

Gotcha. Yeah, you get a notification from which you can swap mode. Default being charging only, for security reasons. Also, android encrypts the filesystem by default these days I believe. So unpowered fs access is a no go without a lot of work for a very niche use case. Security doesn't really matter on a somewhat dumb e-reader though, so seems like sensible defaults for the respective devices tbh.