the.com/powerbank

the anxiety blanket of the digital age, charging your phone while draining your soul of battery dread

means A portable battery you carry around to recharge your phone or other devices when there's no wall socket in sight.

from A transparent compound of "power" + "bank," coined as a marketing term for portable chargers in the smartphone era — the idea being a "bank" where you deposit and withdraw electrical charge, the way you would money. "Power" traces back through Old French "poeir" to a Latin root meaning "to be able," while "bank" comes from Italian "banca," the money-changer's bench or table — a cousin of the same word that gave us "bench."

airline rule
banned from checked bags due to fire risk
hidden math
capacity loss means you never get advertised charges
origins
first portable chargers emerged in early 2000s
size race
some now exceed 25000mAh, basically a brick
failure mode
the one you packed is always dead too
for instance

anker powercore 26800 — most popular portable charger globally, over 2 million units sold since 2015

mophie powerstation plus — premium powerbank with built-in cables, acquired by zagg for $100 million in 2014

goal zero nomad 7 — solar-powered powerbank used by emergency responders, available since 2009

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