According to 2026 TSA and FAA regulations, you are generally prohibited from placing "spare" or uninstalled lithium batteries and power banks in checked luggage due to the risk of thermal runaway and fire. However, you can check devices that have the battery installed within the unit, such as laptops, tablets, e-readers, and cameras, provided the device is completely powered off and protected from accidental activation. For high-capacity batteries, such as those found in large power tools or specialized cinema cameras (exceeding 100 watt-hours), you typically need specific airline approval even to carry them on. Small consumer electronics with non-lithium batteries (like AA alkaline) are generally fine in checked bags. If your "smart luggage" has a built-in battery for charging or GPS tracking, the battery must be removable; if the bag is checked, the battery must be removed and carried into the cabin with you.