# Aviation regulators clarify lithium battery limits for AirTags and smart luggage tracking

Amid heightened crackdowns on portable power bank fire hazards, federal guidelines confirm CR2032 coin cells remain safe and legal in checked bags.

- Canonical: https://reviewblip.com/news/aviation-regulators-clarify-lithium-battery-limits-for-airtags-and-smart-luggage-tracking/
- Published: 2026-10-26T20:00:58.759Z
- Updated: 2026-10-26T20:00:58.759Z
- Author: ReviewBlip
- Category: Travel Tech & Bluetooth Tracking
- Type: News

![Apple AirTag Bluetooth tracking device alongside checked luggage and airline boarding pass on airport terminal floor](https://reviewblip.com/editorial-images/14a643426f19c515835f6dad8885c8ae75d1984767ecdcb80f8660b9d5eab48e)

Image credit: Engadget / Apple Inc.

As global airlines intensify enforcement against lithium-ion battery fire hazards following several high-profile in-flight thermal runaway incidents, travelers face persistent confusion regarding the legality of Bluetooth baggage trackers. In response, aviation regulators have clarified the strict technical boundaries governing items like Apple AirTags inside checked luggage.

The Federal Aviation Administration (FAA) and Transportation Security Administration (TSA) strictly prohibit loose lithium-ion power banks and spare rechargeable cells in aircraft cargo compartments due to the risk of uncontrollable thermal runaway—a chemical chain reaction that has caused over 700 battery smoke and fire incidents since 2006. Because cargo hold fires cannot be rapidly tackled by cabin crew, high-capacity batteries must remain in carry-on baggage.

However, aviation authorities maintain a clear scientific exception for micro-power tracking devices. Under TSA and FAA regulations, non-rechargeable lithium metal batteries containing less than 2.0 grams of lithium content are fully permitted in checked bags. An Apple AirTag utilizes an industry-standard CR2032 coin cell, which contains less than 0.1 grams of lithium metal and produces under 0.7 watt-hours of electrical energy—a tiny fraction of the allowable threshold.

International standards align closely with US policy. The International Civil Aviation Organization (ICAO), the United Nations aviation agency, enacted an amendment allowing lithium-powered tracking devices in checked luggage to remain continuously transmitting during flight, provided lithium content does not exceed 0.3 grams. This global consensus ensures travelers can freely deploy features like Apple's Share Item Location with participating international carriers without violating international aviation safety codes.

## Sources
- [\[src-engadget-airtags-tsa\] Does TSA actually allow AirTags in your luggage? Here's what the rules say](https://www.engadget.com/2294102/does-tsa-allow-airtags-in-luggage-what-rules-say/)