6 volt battery vs. 9 volt battery?

Question

Explain in detail why a 6 volt battery is bigger than a 9 volt battery. Thanks!

Answer 1

The answer will surprise you!!! It is because the six volt battery was designed for lantern applications and emergency lighting, and the requirements were that it provide a certain minimum amount of run-time under a standard load. The standard load is the light bulb used for six volt lantern or emergency lighting applications. The exact specifics on the bulb I don't have at my fingertips. But that is why the battery was designed that way: for a specific application to meet minimum requirements for that area. It is bigger because it has to provide an extended amount of energy over time. The larger the battery size the more energy it is going to provide for a longer time.