If your device uses a non-spillable lead acid battery, check it can travel on an aircraft.
Non-spillable lead acid batteries cannot travel if:
Make sure printed information that the non-spillable lead acid battery complies with Special Provision A67  travels with the battery.
Batteries can overheat and catch fire.
You will be asked to relinquish all dangerous or prohibited items found in your carry-on luggage. If you refuse:
We x-ray bags going on planes to make sure there is nothing dangerous in them. If something comes up on the x-ray that needs checking, the bag will be opened, searched and any dangerous or prohibited item will be removed.