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by ardy42 2693 days ago
> Juicers seems to be slang related to the people who charge up the scooters, but again, juice + er is a pattern many people can pick up on.

It probably is. Saying something is "out of juice" to mean "out of power" has a fairly long history. It's a pretty straightforward to extend that slang to someone who restores power to things by recharging them.