eli5 dry battery cell has 1.5 volts. what’s the rationale of different sizes of cells having same 1.5 volts? are they meant for space accomodations or more power?

Question

eli5 dry battery cell has 1.5 volts. what’s the rationale of different sizes of cells having same 1.5 volts? are they meant for space accomodations or more power?

In: 8

Answer 1

Different sizes have different amount of energy given (expressed in mAh), but the voltage is the same because internally they have the same cell structure with the same materials.