Is 645.50 miligrams as heavy as a Battery (AA)?
It's about one-thirty-fifth as heavy as a Battery (AA)
The weight of a Battery (AA) is about 24,000 miligrams.
(Alkaline)
An "AA" size battery weighs 24,000 miligrams. AA batteries came into common use during World War II and were given their name by the American National Standards Institute (ANSI) Committee C18 because they were smaller than the "A" size batteries which were invented first.
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