坐飞机可以带 干电池与锂电池 吗？（美国TSA/加拿大CATSA标准）

可以随身：民航安检对该物品无特殊随身携带限制，允许带入客舱。

允许托运：可以放入托运行李中正常托运。

Standard carry-on baggage size allowances apply; TSA publishes no individual numerical cap for personal use.

Yes, passengers may use Batteries (AA / Lithium) during flight in compliance with crew instructions.

Power banks and lithium batteries under 100 watt-hours do not require formal declaration at domestic security checkpoints. However, if your spare battery is between 100 and 160 watt-hours, you must declare it to your airline ticket counter prior to boarding for carrier safety approval, and declare any damaged or recalled units.

If a power bank or spare lithium battery is discovered in checked luggage, airport baggage screeners will remove and confiscate it without passenger notification to prevent cargo compartment fires. At security checkpoints, unlabelled banks or units exceeding 160 watt-hours will be denied boarding and surrendered to security.

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.

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.