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.
Bacteria that make their own food are known as autotrophs or producers, and they do this through the process of photosynthesis or chemosynthesis. Most autotrophs use the process of photosynthesis, which usually involves converting carbon dioxide and water into glucose using the sun?s energy.