why do dry cell batteries expire (ex. AA, AAA, etc.)?

Question

why do dry cell batteries expire (ex. AA, AAA, etc.)?

In: 1

Answer 1

Because they are always reacting from the moment they’re made – the reaction just happens faster when the circuit is completed.

So eventually the battery will discharge and corrode, and may begin to leak electrolytes. The best before date is the date they’re guaranteed to NOT do any if that by.