View Schematic Diagram Battery Symbol Gif. Electrical voltage is generated by mechanical rotation of the generator. For example a 9v battery being a single cell, even though they typically contain 6 cells within them not sure about the symbol but i was allways told that an aa or aaa should never be called a battery, it is a cell.
But usually people just draw the battery symbol with one or two cells no matter what voltage it is.
These symbols are essential to be able to read schematic diagrams. It originated as a schematic drawing of the earliest type of battery, a voltaic pile. There is a quite adequate collection of symbol for electrical, electronic circuit. All people doing schematic capture or reading an electrical/electronic schematic diagram should have access to these standards.