Peach power bank rules: up to 2, 160Wh, no use on board

In checked bags

Not allowed in checked baggage

Not allowed

Over 160Wh not allowed in carry-on or checked baggage

How many

Up to 2 power banks per person (160Wh or less)

Using it on board

Do not charge devices from a power bank, or charge a power bank from the seat USB port, during the flight

Where to keep it

Do not store it in the overhead bin; keep it within your sight

Packing

Short-circuit prevention measures are required

No. Do not charge devices from a power bank, or charge a power bank from the seat USB port, during the flight.

In the airline's own words

• Power bank rules, airline by airline
• Power banks on Japanese flights