> Even so, the US isn't the first to do this. China won't let you take Li+ batteries beyond a certain mAH in your carryon. The US already has energy limits for

> Even so, the US isn't the first to do this. China won't let you take Li+ batteries beyond a certain mAH in your carryon. The US already has energy limits for batteries in carry-ons[1], they're just not so boneheaded as to preclude laptops. [1]: https://www.faa.gov/about/office_org/headquarters_offices/ash/ash_programs/hazmat/passenger_info/media/Airline_passengers_and_batteries.pdf https://www.faa.gov/about/office_org/headquarters_offices/as...