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Can I Carry It? — verified carry-on guide

飛行機にBatteries (AA / Lithium)を持ち込める？

電子機器・バッテリー

要約結論
機内持込: ✓ 可能 受託手荷物: ✓ 可能

Yes — you can bring batteries on a plane in your carry-on luggage. AA/AAA/C/D/9V/button cells: both bags.

  • · AA/AAA/C/D/9V/button cells: both bags
  • · Spare lithium batteries + power banks: carry-on only
  • · Lithium limits: ≤ 100 Wh (ion) / ≤ 2 g lithium (metal)
  • · Cover terminals on spares — tape, caps, or a battery case
On this page · 5 sections

🔋 Battery watt-hour calculator

Power banks show mAh, airlines limit Wh. Under 100 Wh flies free in carry-on; 100–160 Wh needs airline approval.

航空保安当局別の公式規定

Rules by security authority

United States — TSA

Carry-on

Yes

Yes — everyday alkaline cells fly in either bag; loose lithium batteries and power banks are cabin-only.

Checked bag

Yes

Alkaline/NiMH batteries: yes. Spare lithium batteries: no, they are cabin-only — installed-in-device batteries are fine in checked bags.

Rule conditions: AA/AAA/C/D/9V/button cells: both bagsSpare lithium batteries + power banks: carry-on onlyLithium limits: ≤ 100 Wh (ion) / ≤ 2 g lithium (metal)Cover terminals on spares — tape, caps, or a battery case

Flying internationally? Security follows the country you depart from — the authority above applies at your departure airport. Customs at arrival is separate.

Batteries (AA / Lithium)のパッキング注意点

機内持ち込み手荷物: Yes — everyday alkaline cells fly in either bag; loose lithium batteries and power banks are cabin-only.

受託手荷物（預け荷物）: Alkaline/NiMH batteries: yes. Spare lithium batteries: no, they are cabin-only — installed-in-device batteries are fine in checked bags.

保安検査場での最終的な持ち込み可否判断は、現場の保安検査員に委ねられます。

よくある質問 (FAQ)

Frequently asked questions

Can you bring Batteries in a carry-on?

Yes — everyday alkaline cells fly in either bag; loose lithium batteries and power banks are cabin-only.

Can you pack Batteries in checked luggage?

Alkaline/NiMH batteries: yes. Spare lithium batteries: no, they are cabin-only — installed-in-device batteries are fine in checked bags.

Can I bring AA batteries on a plane?

Yes — alkaline and other common dry batteries (AA, AAA, C, D, 9V, button cells) are allowed in carry-on and checked bags. Cover the terminals of loose ones to prevent short circuits.

Can lithium batteries go in checked luggage?

Spare (uninstalled) lithium batteries and power banks cannot — they are cabin-only under FAA rules, limited to 100 watt-hours (ion) or 2 grams of lithium (metal). Batteries installed in a device are fine in checked bags.

Last verified:

Verified against official sources. Rules change — for high-stakes items, confirm with your airline and the screening authority. Our verification method →