How many volts in a AA battrey?

AA, AAA, AAAA, C, D, F, N, Sub-C, Number 6 "Igniter", and many coin cell batteries all produce the exact same voltage: 1.5V

Back in the 1920s through 1940s there was a class of batteries for use in certain vacuum tube radiOS called an A battery. This is unrelated to the batteries above and they came in many physical shapes and sizes. Typical voltages were: 1.5V, 6V, or 12V depending on the tubes used in the radio.