What Size Bag

Laptops and electronics on a plane

Laptops, phones, tablets and cameras are allowed in carry-on and checked bags, but the FAA says to keep them in your carry-on. A device in a checked bag must be switched fully off, not asleep, and protected so it can’t turn on.

At the checkpoint

In a standard TSA lane, take your laptop out of your bag and put it in a bin of its own. TSA PreCheck travelers can leave the laptop in the bag.

A full-sized video game console goes in a separate bin as well.

Battery limits for devices

A device’s lithium ion battery has the same limits as a spare: up to 100 Wh, or over 100 Wh and up to 160 Wh with the airline’s approval. TSA says these limits cover nearly every lithium battery people use in their devices.

Check a big laptop battery with the Wh calculator if its label gives only mAh and volts.

Spare batteries and power banks

Spare laptop and phone batteries, power banks and phone battery charging cases go in your carry-on only. See spare batteries on a plane for how to pack them.

Luggage trackers

A tracker such as an AirTag or Tile can go in a checked bag if its battery holds no more than 0.3 grams of lithium metal, or 2.7 Wh of lithium ion.

If a device overheats

Tell the flight crew right away if a phone, laptop or other device gets hot, swells, smokes or burns. A damaged or recalled device can’t fly unless its battery has been removed or made safe.

Common questions

Does a phone battery charging case count as a spare battery?

Yes, the FAA and TSA count a phone battery charging case as a spare battery, so it goes in your carry-on only.

Are smartwatches allowed on a plane?

Yes, the FAA lists watches among the portable electronic devices allowed in carry-on and checked bags.

Available on Amazon

As an Amazon Associate, What Size Bag earns from qualifying purchases.

Where we get our information from

The battery rules are the FAA’s PackSafe pages and the DOT regulation behind them (49 CFR 175.10); the checkpoint steps are TSA’s. Checked against published data from TSA, FAA and US DOT.

See all 8 sources
  • FAA, Airline Passengers and Batteries: guidance, FAQs and chart
  • FAA, Printable PackSafe Chart (PDF, updated November 14, 2025)
  • US DOT, 49 CFR 175.10, Exceptions for passengers, crewmembers, and air operators (eCFR)
  • TSA, What Can I Bring?: Lithium batteries with 100 watt hours or less in a device
  • TSA, What Can I Bring?: Laptops
  • TSA, What Can I Bring?: Cell Phones
  • TSA, What Can I Bring?: Tablets
  • TSA, What Can I Bring?: Full Sized Video Game Consoles

General guidance from airline, TSA and FAA rules, checked on the date shown. Rules change, and the airline and security officers decide on the day: check your airline before you fly.