Spillable batteries are allowed in wheelchairs and mobility devices, where the battery may remain installed if it is securely attached to the mobility device and the battery housing provides protection from damage, the terminals are protected from short circuit, and the battery remains in an upright position when stowed on the aircraft. See FAA regulations
Non-spillable batteries may require additional measures based on battery type. See FAA regulations.
Lithium metal (non-rechargeable lithium) batteries are forbidden with these devices.
Lithium ion batteries must be removed from this type of mobility device and battery terminals protected from short circuit. The battery must be protected from damage (e.g. by placing each battery in a protective pouch). The lithium ion batteries must be carried in carry-on baggage only. The passenger must advise the airline of the battery location. The airline must notify the Pilot-in-command of the battery location in the cabin.
For complete passenger instructions contact your airline. Advance arrangements and extra check-in time may be necessary. The airline may need to remove the battery and package it separately if the wheelchair cannot be stowed upright in the cargo compartment.
Wheelchairs and other mobility devices are permitted through the checkpoint but not permitted into the cabin of the aircraft.