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.
There are at least three variations of the lead-acid battery in current automotive use (1). In the most common configuration, the car battery has six cells, each producing about 2.1 volts. Thus the total battery output voltage is about 12.6 volts. It is the about in the previous two sentences that leads to trouble when a charging system is not matched to the type of battery installed. The three major contributors to battery chemistry are lead, lead dioxide, and sulfuric acid.