Free power outlets
Narita says power-outlet spaces are provided at a number of locations across the terminals and are free to use.
Wi-Fi is part of the same facility layer
FreeWiFi-NARITA is available throughout terminal areas and on terminal shuttle buses, according to the airport.
Bring your own charging gear
Outlet location does not guarantee the cable, USB standard or plug you need. Carry the correct charger and adapter for your device.
Charge before the final gate rush
Start early during a connection so a gate change or crowded charging area does not leave you dependent on the final few minutes.
Official sources
AirportBoard uses airport or transport-operator sources for operational facts. Re-check time-sensitive information on travel day.