Why are AA batteries not the same size as AA batteries?

Question

Electronics

batteries are slightly thicker and shorter. AA is the standard. Why do they do it?

Answer 1

Maybe you bought some completely left-handed batteries? Never encountered this.
Well, if you believe the wiki - the size, even according to the specification, can vary slightly.

An AA cell measures 49.2–50.5 mm (1.94–1.99 in) in length, including the button terminal—and 13.5–14.5 mm (0.53–0.57 in) in diameter. The positive terminal button should be a minimum 1 mm high and a maximum 5.5 mm in diameter, the flat negative terminal should be a minimum diameter of 7 mm.[1]

en.wikipedia.org/wiki/AA_battery

Answer 2

A little different, yes. I think batteries are made thicker to increase their capacity.

Answer 3

There are various types of both rechargeable batteries and batteries. These can be specialized batteries for radios or laptops. They may have a slightly non-standard size.
You can read about the different types here .