> 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. S

> 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.