I believe there is a charging cable. However you only need that for the initial charge. The movement from your feet actually keeps the electronics charged on an ongoing basis.
It is amazing, I sit on the sofa watch a movie and just pedal away. It is totally quiet and a very smooth pedaling motion. Look forward to many wonderful days ahead — thank you Cubii
Nah, you get use to it and life goes on as you just pedal away —