The modern power wheelchairs are similar structurally however the various functions available make each unit unique.
Ever power wheelchair has the following 4 basic parts:
![How Power Wheelchairs Work](https://i0.wp.com/www.karmanhealthcare.com/wp-content/uploads/2015/10/how-power-wheelchairs-work.jpg?resize=820%2C304)
- motor
- battery
- drive
- controller