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What's happened with the interchangeable fuel-cell batteries, which 15-or-so years ago were said to be able to power laptops, smartphones, and all kinds of devi
by nikolay 5y ago
What's happened with the interchangeable fuel-cell batteries, which 15-or-so years ago were said to be able to power laptops, smartphones, and all kinds of devices, and replaced empty-for-full at convenience stores for pennies a piece?