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Can I Carry It? — verified carry-on guide

飛行機にBatteriesを持ち込める？

電子機器・バッテリー

By Capt. Marcus Vance (Aviation Security Consultant) Reviewed by Elena Rostova (Regulatory Specialist) Verified against TSA/CATSA:
要約結論
機内持込: ✓ 可能 受託手荷物: ⚠ 条件付き

可能 — Batteriesは機内持ち込み手荷物として飛行機に持ち込めます。 AA/AAA/C/D dry cells: both bags OK.

  • · AA/AAA/C/D dry cells: both bags OK
  • · Spare lithium batteries: carry-on only
  • · Tape terminals or use original retail packaging
  • · Installed device batteries: generally fine in either bag
On this page · 6 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

機内持込:

可能

Yes, everyday batteries (AA, AAA, lithium spares) are allowed in carry-on — and lithium spares belong here only.

受託手荷物:

条件付き

Dry batteries (AA/AAA) are fine checked. Spare lithium or power-bank-type batteries are banned from checked bags.

Rule conditions: AA/AAA/C/D dry cells: both bags OKSpare lithium batteries: carry-on onlyTape terminals or use original retail packagingInstalled device batteries: generally fine in either bag

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

🛠️ Interactive Problem-Solving Utility

Calculate Your Device’s Watt-Hours (Wh)

Airlines enforce battery rules in Watt-Hours, not mAh. Calculate your exact capacity and verify flight eligibility.

🔋 バッテリー ワット時定格量 (Wh) 計算機

モバイルバッテリーの多くはmAh表記ですが、航空会社の制限基準はワット時 (Wh) です。100Wh以下は機内持込自由、100〜160Whは航空会社の事前承認が必要です。

Direct Tool Destination: Battery Watt-Hour Calculator → Launch Interactive Tool →

Batteriesのパッキング注意点

機内持ち込み手荷物: Yes, everyday batteries (AA, AAA, lithium spares) are allowed in carry-on — and lithium spares belong here only.

受託手荷物（預け荷物）: Dry batteries (AA/AAA) are fine checked. Spare lithium or power-bank-type batteries are banned from 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。

TSA-Approved Luggage & Travel Essentials

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よくある質問 (FAQ)

Frequently asked questions

Can you bring Spare Batteries in a carry-on?

Yes, everyday batteries (AA, AAA, lithium spares) are allowed in carry-on — and lithium spares belong here only.

Can you pack Spare Batteries in checked luggage?

Dry batteries (AA/AAA) are fine checked. Spare lithium or power-bank-type batteries are banned from 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 →