What defines a battery?

The Electrochemical Battery

The standard battery of the contemporary era: rechargeable. These enabled the small, portable technologies of the early 21st century, and were used in the earliest teleindexers.

A number of various technologies filled this role, from nickel-cadmium cells in the late 20th to the sodium-sulfur cells of the early 21st. Ultimately, these batteries did not pass the “longevity test” and were largely phased out

Stability-superheavy atomic battery

biosynthetic nanocarbon



Nuclear fission reactor

An atomic-electrical engine (a marketing phrase designed to quell fears over nuclear-powered cars which caught on somewhere in the early 21st century)

Nuclear fusion reactor

antimatter reactor

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