Safety rules for wheelchair batteries
Updated
Three types of batteries for wheelchairs are mostly used:
Wet-cell batteries – which are not allowed on our aircraft
Gel batteries
Dry-cell batteries, which also includes lithium batteries
Chairs with lithium or dry-cell batteries need the battery attached to the wheelchair and in off position with the battery disengaged.
To the ground crew you should be able to demonstrate how to disengage the motor.