Putting electrical energy back into a battery or device to restore its power, or regaining one's own energy and motivation.
From 're-' (again) plus 'charge' (from Old French 'charger,' from Latin 'carrus,' a wagon). The electrical meaning emerged in the 20th century with the invention of rechargeable batteries.
Interestingly, we use 'recharging' both for phones needing electricity and for humans needing rest—it shows how deeply technology metaphors have woven into how we describe our own bodies and emotions.
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