Goods Across Borders · Customs rule card
Lithium Power Bank → Japan
Purpose: Traveling · Verified: 2026-04-25
Under 100Wh in carry-on only
Details
Japan Civil Aviation Bureau requires lithium-ion power banks to travel in carry-on only — never checked. Capacity limits per ICAO standards: under 100 Wh unlimited (within 2-spare rule), 100-160 Wh require airline approval, above 160 Wh forbidden on passenger aircraft. Narita / Haneda / Kansai security actively screen for power banks in checked bags; offending bags are pulled and the battery removed before loading.
Quantity limit
Under 100Wh freely; 100-160Wh with airline approval; over 160Wh prohibited
Legal reference
JCAB (Japan Civil Aviation Bureau) regulations
IATA dangerous goods
Lithium Power Bank is classified under Class 9 — Miscellaneous dangerous goods. Cabin and checked-baggage limits apply on top of customs rules.
Practical advice
No special procedure is required for personal quantities of lithium power bank arriving in Japan. Quantities above duty-free allowances must still be declared. Verify current limits with Japan Customs (Ministry of Finance).
Customs authority
Japan Customs (Ministry of Finance) · https://www.customs.mof.go.jp