Here’s the one rule that might actually save your life: loose lithium batteries are banned entirely. If you’ve got a spare battery for your camera or vape pen, it must be in its original packaging or taped over the terminals. They are deathly afraid of you creating a “thermal runaway” event—which is science-speak for “your bag catching fire mid-flight.”
Fun fact: in 2026, the FAA tracked over 40 battery-related incidents on planes. Most were caused by charging cables rubbing against cheap batteries. So if you’re still using that battery pack from 2018 that’s all swollen like a sad balloon, please recycle it. The TSA will thank you, and so will everyone sitting next to you.
2026 TSA Carry-On Rules You MUST Know! - YouTube
The Surprising Truth: What’s Actually Easier Now
Believe it or not, some things got easier. You can now bring pocket knives with blades under 6cm in your carry-on (not checked), which is a huge reversal from the post-9/11 paranoia. Also, books and magazines don’t need to be removed from your bag anymore—unless they’re wet, which is TSA speak for “we’re judging your beach read.”
And here’s the kicker: the TSA’s new “family lane” program lets you keep all liquids and electronics inside your bags if you’re traveling with kids under 12. That’s right: parents finally get a break. Of course, the trade-off is you’ll smell like goldfish crackers for the next four hours.
