Correction for the weight of a Battery (C)
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How heavy is 0.0246 megatonnes?
It's about 400,000,000 times as heavy as a Battery (C)
The weight of a Battery (C) is about 0.0000000000650 megatonnes.
(Alkaline)
A "C" size battery weighs 0.0000000000650 megatonnes. C batteries are typically used in medium-drain devices such as musical instruments.