In 2026, FAA and TSA regulations strictly require that cameras with lithium-ion batteries be kept in your carry-on baggage whenever possible. While a battery installed in a device is technically allowed in checked luggage if the device is completely powered off, it is strongly discouraged due to fire risks. However, spare (uninstalled) lithium batteries are absolutely prohibited in checked bags and must be in your carry-on. For most travelers, batteries under 100 Watt-hours (Wh)—which includes almost all standard DSLR, mirrorless, and GoPro batteries—have no quantity limit as long as they are for personal use. For larger professional video batteries (101–160 Wh), you are limited to two spares and may need airline approval. To ensure a smooth 2026 security check, it is a "best practice" to tape over the battery terminals or keep them in individual plastic bags to prevent short-circuiting, which is the leading cause of battery-related incidents in flight.