Can I take a power bank on an airplane?

TSA allows power banks under 100Wh (roughly 27,000mAh at 3.7V) in carry-on luggage. 100-160Wh requires airline approval. Power banks are NOT allowed in checked luggage under any circumstances. The Anker 548 at 60,000mAh (222Wh) exceeds TSA limits.

Will cold weather affect my power bank?

Yes. Lithium batteries lose 20-30% capacity in freezing temperatures. Keep your power bank inside your sleeping bag or jacket pocket in cold weather. Never charge a lithium battery below 32F (0C) — this can permanently damage the cells.

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