1 A unit-quantity of electricity used as a measure of the amount of electrical charge that may be obtained from a storage battery before it requires recharging. 2  Ampere-Hour Capacity -- The number of ampere-hours which can be delivered by a storage battery on a single discharge.
A: Bacteria obtain energy by either ingesting other organisms and organic compounds or by producing their own food. The bacteria that produce their own food are called autotrophs. Bacteria that must consume other organic molecules for energy are called heterotrophs.
Though this is the main way for the bacteria to get energy, it is also capable of a wide variety of metabolic reactions to sustain its energy needs such as fermentation, to produce carbon dioxide to help produce an anaerobic environment for it, and they can carry out glycolysis and glycogen metabolism.