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0.000903 grains is about one-four-hundred-thousandth as heavy as a Battery (AA)
In other words, it's 0.00000240 times the weight of a Battery (AA), and the weight of a Battery (AA) is 420,000 times that amount.
An "AA" size battery weighs 370 grains. 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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