Lithium battery air travel rules in 2026: TSA, FAA, IATA, and what changed

Every few months someone in a van life forum posts the same story: arrived at the airport with a 500 Wh power station in a checked bag, TSA pulled it, FAA confiscated it, flight left without them. The rules around lithium batteries on aircraft are not new — they've been settled since 2016 — but the interaction between TSA, FAA, and individual airlines still trips travelers up. Here's what every part of the system actually says.

The 100 Wh rule

Per FAA hazardous materials guidance, lithium-ion batteries up to 100 Wh are allowed without airline approval, in carry-on only. Batteries 101–160 Wh require airline approval and are limited to two per passenger, carry-on only. Batteries over 160 Wh are forbidden on passenger aircraft entirely — they must ship as cargo with hazmat documentation.

The 100 Wh threshold isn't arbitrary. IATA Dangerous Goods Regulations aligned to it because below 100 Wh, the thermal-runaway energy is low enough that aircraft fire suppression systems can contain a single-cell event.

What this means for power stations

Every portable power station in our database exceeds 100 Wh. The smallest, EcoFlow River 3 at 245 Wh and Anker SOLIX C300 at 288 Wh, are roughly 2.5× over the carry-on limit. You cannot fly with them. Options:

• Ground freight ahead. UPS Ground or FedEx Ground accept lithium batteries up to 300 Wh with proper labeling. Most major brands sell their units pre-labeled for ground shipping.
• Rent at destination. Outdoor outfitters in major outdoor destinations (Moab, Denver, Boulder, Bozeman) increasingly rent power stations.
• Buy a CPAP-specific battery. Medistrom Pilot-12 Lite (95 Wh, FAA-approved), Philips DreamStation Go battery (95 Wh). FAA-allowed in carry-on. Insufficient for general use but covers medical-necessity travel.

Checked bag is worse, not better

TSA explicitly prohibits lithium batteries from checked baggage above 100 Wh, and recommends keeping spare batteries (even sub-100 Wh) in carry-on rather than checked. The reasoning: a thermal event in the cargo hold is hard to detect and impossible to fight. In the cabin, a flight attendant can pull a fire-containment bag from the galley within seconds. There are recorded cabin lithium-fire events that ended without injury; there are recorded cargo-hold ones that didn't.

Some travelers think "small power station in checked bag, declare it" works. It doesn't. There's no declaration that converts a 200 Wh unit into a permitted checked item. TSA pulls it, FAA fines you ($1,000–$50,000 per occurrence per FAA enforcement guidance), and you're rebooked at your expense.

What counts as a "spare"

Loose batteries — even sub-100 Wh — are considered "spares" and must be in carry-on with terminals protected (taped or in original packaging). Power stations are usually treated as the host device with its battery installed, not as a spare. The distinction matters: USB power banks count as spares (must be in carry-on, no exceptions). A portable power station above 100 Wh is treated as the device class above and is just prohibited.

International airline variations

Per IATA DGR, the 100 Wh rule is broadly aligned across IATA members but individual airlines can be stricter. Notable variants for 2026:

• Cathay Pacific, Singapore Airlines, Korean Air: Strict enforcement, may require visible Wh labeling on every battery.
• EU carriers (Lufthansa, KLM, Air France): Same 100 Wh limit but require carry-on placement of every lithium battery including those installed in checked devices like cameras.
• U.S. domestic carriers: Match FAA rules. Southwest, Delta, American, United all consistent.
• Some Indian and Middle Eastern carriers: Have been documented confiscating sub-100 Wh batteries that lack visible Wh marking, even when within limits. Bring product documentation.

What about driving across borders?

U.S. and Canadian customs accept personal-use lithium batteries without declaration. Mexico is the same. EU and UK customs likewise. Air freight crossing borders follows IATA. Personal vehicles carrying power stations across the U.S./Canada or U.S./Mexico borders have no specific reporting requirement under 300 Wh for personal use.

Sources & further reading

• PackSafe — Lithium Batteries — Federal Aviation Administration
• Lithium Batteries — What Can I Bring? — Transportation Security Administration
• Dangerous Goods Regulations — International Air Transport Association
• Lithium Batteries — Passenger Guidance — International Air Transport Association
• Hazmat Enforcement — Federal Aviation Administration