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 [3] 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.