It wasn’t like that in the past (AA were more common). The component that needs the AAA battery isn’t getting smaller either.
In: Technology
I don’t think your statement is true, but it does seem like many of the devices that used AA are now replaced by our phones, such as Walkman, Discmen, etc. portable audio players. And some early Digital Cameras. Now we don’t own standalone devices requiring replaceable batteries, but just use phones with rechargeable ones built in.
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