if you happen to be wondering what “powers” the current that continues to flow in the motor when you remove the battery current… it’s the collapsing magnetic field of the stator which stores energy in the magnetic field itself.
the inductance is directly proportional to the magnetic field produced by a given amount of current, and since the motor produces a large magnetic field for a given current, it has high inductance, and the current still flows for a while when you remove the battery current if you quickly short the motor to itself.