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Because I have to say it somewhere
A battery is not an energy source.
Batteries are storage devices, and the energy has to come from somewhere. A fuel cell is a kind of battery.
[Also, mushrooms are not squash, but I'm not actually annoyed at having been given a different kind of soup than I ordered.]
Batteries are storage devices, and the energy has to come from somewhere. A fuel cell is a kind of battery.
[Also, mushrooms are not squash, but I'm not actually annoyed at having been given a different kind of soup than I ordered.]