U.S. passenger power banks: keep them out of checked bags

Prepare for the moment your carry-on might be gate-checked: an ordinary personal-use lithium-ion power bank belongs with you in the cabin, not inside the bag handed over. This guide covers U.S. passenger baggage preparation for power banks and spare lithium-ion batteries for personal electronics. It excludes installed-device, medical/mobility, smart-bag, lithium-metal, cargo and resale/distribution cases.

Establish the battery rating and the airline's conditions

Use the battery's marked watt-hour rating or reliable documentation for the exact model. Do not substitute charging-output watts for capacity in watt-hours. If the rating is unknown, leave carriage unresolved rather than estimating from a familiar-looking charger. The FAA battery FAQ, question 3 explains rating identification; this guide performs no measurement or calculation.

Rating per spare lithium-ion battery	U.S. passenger preparation boundary
Not more than 100 Wh	Within the ordinary capacity limit; packing, battery-condition and airline restrictions still apply.
More than 100 Wh, not more than 160 Wh	Requires the operator's approval; at most two such individually protected spares per person. Approval is not established by this table.
More than 160 Wh	Outside this passenger-baggage allowance; do not move it to checked baggage as a workaround.

The FAA lithium-battery page expressly includes power banks and external battery chargers. Its larger-battery wording uses “101–160 Wh”; 49 CFR 175.10(a)(18)(ii) and (iv) give the precise greater-than-100/not-greater-than-160 boundaries and treat articles whose main purpose is powering another device as spares. Thus a fractional rating above 100 Wh is not rounded down into the ordinary category. This does not override an airline's refusal or stricter policy. The same regulation also requires a battery type proven to meet the UN Manual's subsection 38.3 tests. A marked Wh rating alone does not establish that condition; resolve uncertain model documentation with the manufacturer or carrier, without attempting safety tests yourself.

Prepare for the bag handoff

FAA requires spare lithium batteries and power banks in carry-on baggage only. Before a bag is checked at the gate or planeside, remove them and keep them with you in the cabin. Protect each battery from damage and short circuits; documented methods include original packaging, insulating exposed terminals or an individual protective pouch. A loose collection beside metal objects is not individual protection. FAA — Lithium Batteries, packing requirements.

If damage or a recall raises a safety concern, stop and consult the manufacturer and airline. FAA restricts damaged/recalled batteries likely to spark or dangerously heat; this guide supplies no do-it-yourself method to make one safe. Taping terminals is not a repair or proof of airworthiness. FAA — Damaged or Recalled Batteries.

Check the actual carrier's capacity, count and other restrictions before travel. Do not read the two-large-spare limit as a universal allowance for every power bank or assume small banks are unlimited on every airline. Carriage rules also do not establish permission to use or recharge a power bank aboard. International requirements can be stricter; this is not blanket permission for a foreign flight. FAA — quantity limits and PackSafe passenger scope.

Evidence and unresolved decisions

Sources checked 2026-10-05T06:00:12Z. FAA pages show an August 11, 2026 update; eCFR displayed Title 49 current through October 1, 2026. Seventeen synthetic manual boundary checks completed. No battery inspection, packing, airline approval, checkpoint clearance, account or travel action occurred. A distinct creator-controlled checker independently read all four cited sources and checked fourteen additional manual boundary cases; same-controller checks are not independent review.

Recheck before travel and by 2026-11-05T00:00:00Z, or after changed carrier, route, battery or official guidance. Feedback should identify the public rule and context without booking or identity details. This follows the travel preparation standard [current article].