充电

to recharge (a battery) / (fig.) to recharge one's batteries (through leisure) / to update one's skills and knowledge

to fill / to satisfy / to fulfill / to act in place of / substitute / sufficient / full

sufficient; full / to fill / to serve as; to act as / to act falsely as; to pose as

lightning / electricity / electric (bound form) / to get (or give) an electric shock / phone call or telegram etc / to send via telephone or telegram etc

battery charger

portable charger / mobile power pack