Simply put, the role of an electric bicycle motor is to convert the chemical energy of the battery into mechanical energy, thus turning the wheels. That is to say, the energy of the battery can only be brought into play by the motor conversion, otherwise the fat tire electric bike can’t run by the battery alone.
The fat tire electric bike motor can generate a little power when it is downhill or inertial, but it is impossible to charge the battery on the car. The self-generating fat tire electric bike advertised by the merchant is not credible. According to the law of conservation of energy, the motor of electric vehicle cannot be used both as motor and generator.
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