A Class I recall situation is one in which there is a reasonable probability that the use of, or exposure to, a volatile product will cause serious adverse health consequences or death (21 CFR 7.3(m)(1)).
Electrical energy can be converted back into kinetic energy in electric motors: this happens with the windscreen wipers and the starter motor. Electrical energy is converted into light energy in the headlights. In fact the only kind of energy which you will not find in your car is nuclear energy.
The battery is the sole source of electrical power for the car. The battery is charged during vehicle operation by the alternator. If the battery is not charged sufficiently, you will not be able to start the car or use any electrical components (lights, radio, etc.).