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Is 40,000 tonnes as heavy as a Battery (D)?

It's about 300,000,000 times as heavy as a Battery (D)
The weight of a Battery (D) is about 0.000135 tonnes.
(Alkaline)
A "D" size battery weighs 0.000135 tonnes. The D size battery is the oldest of the modern battery sizes, first invented by the National Carbon Company in 1898.
There's more! See other comparisons to 40,000 tonnes...