Final answer:
A battery at the most basic level consists of one or more cells, and each cell in a battery has multiple components like anodes, cathodes, and electrolytes.
Step-by-step explanation:
On its most basic level, a battery is a device consisting of one or more cells. The other components mentioned, such as anodes, cathodes, and electrolytes, are all parts of a cell, but multiple cells combine to form a battery. Each cell in a lead storage battery, commonly used in vehicles, contains a lead anode and a cathode made of lead(IV) oxide (PbO₂), with an electrolyte of sulfuric acid. The energy produced by a cell or battery comes from the chemical reactions that release electrical energy. This realization led to the development of galvanic cells, and by extension, batteries, which have solids or pastes in place of liquid reactants to maximize electrical output per unit mass.