You are right.MyColorIsGreen said:heat does not have a factor in regeneration..
Any permanent magnet motor can operate as either a motor or generator.
its the rotation of the motor's that regenerate electricity back to the battery.
And I assume, adding connection to 1-n coils will give you regeneration in several steps like briefly pressing the pedal for breaking or selecting H1 & H2...
The deceleration in this scenario comes from the counter current of the motor (which plays the generator in that case...)