How Does Car Battery Charge Itself. Since cells do not produce energy they do not have any other mechanism to charge themselves. You will need a car battery recharger a grounded power outlet eye protection and hand protection.
If the battery is your only problem and the car is in otherwise good working order it is quite possible to completely recharge a completely dead battery. The electrical current flows through the battery charger and into the battery and the electrolytes in the battery get restored to their proper energy level. The alternator is the key component.
In some cases you can crank the engine until the battery seems totally dead then come back an hour later and crank it again.
Basically it is the alternator that charges the battery itself. When the car is running the alternator generates energy to feed the electrical system and charge the battery. The car battery uses the power of the engine to charge itself. All you have to do is plug the battery charger in clip its cables to the correct terminals on the car battery and turn it on for the desired time.

