坐飞机可以带 备用锂电池与干电池 吗？（美国TSA/加拿大CATSA标准）

可以随身：额定能量不超过100Wh的充电宝允许随身携带登机；100Wh至160Wh需经航空公司事先批准（每人限带2个）。

禁止托运：充电宝属于备用锂电池，因货舱火灾安全隐患，严禁放入托运行李中托运。

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

Yes, passengers may use Batteries 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.