what is that process of a motor hooked up to a battery but the battery recharges from the energy of the motor?

Answer 1

An alternator in the car. It helps to start the petrol or Diesel engine from the battery's stored energy and later uses a part of the car's kinetic energy to recharge the battery.

If you try it with only the battery and the motor the battery will run down since the energy losses cannot be compensated by any inbuilt means.

Answer 2

A long time ago cars did have a starter/ generator. It would start the engine using the battery then operate as a generator. An alternator ,as Redscott said cannot do this.
Some larger industrial DC motor do use a process of regeneration where demand is variable. The motor will be used to provide intermitent power, when the demand is reduced the motor operates as a generator using the stored energy in the moving system. This also produces a braking effect on the system. Naturally you do not get all of your energy back. This system is being used in many electric cars to extend the battery charge.

Answer 3

An alternator..like in a car..the alternator uses the car motor to recharge the battery that it needs for starting.

Answer 4

there will be losses due to resistance, heat dissipation, friction in motor bearings etc which will not allow all the energy to be used and hence you will have a non-perpetual motor. Like everyone else.

Answer 5

An automotive alternator does NOT start the engine - almost all petrol engines have a separate starter motor for this.

Answer 6

A system that eventually runs down. You would be better not to recargge. There is too much energy lost there

Answer 7

If you can pull it off you will have perpetual motion.

Answer 8

you might call it ......."almost perpetual motion "..;)