Throughout this site we use many technical terms, and given the breadth of readership our site enjoys, sometimes we are remiss and incorrectly assume everyone knows what we are referring to. For those that do not, here are some explanations of the technical terms use.
Device for storing electrical energy by a chemical process. In the normal car, this is a lead-acid battery, in which the chemical process is reversible so that the battery can be re-charged - impossible with dry batteries. Such batteries have a potential of 2 volts per cell when charged, so that most cars have batteries of six cells connected in series to produce 12 volts. A common battery rating is 56 ampere-hours, which means it should deliver 56 amps over a period of one hour or 1 amp over 56 hours.