A power wheelchair, or electric wheelchair, is a motorized alternative to a manual wheelchair, operated easily with a joystick. Here are key factors to consider when choosing one:

1. **Maximum Weight Capacity**: The maximum weight the wheelchair can safely carry, usually measured in pounds.

2. **Top Speed**: The maximum speed, typically in miles per hour, which may vary based on terrain, incline, and passenger weight.

3. **Driving Range**: The distance the wheelchair can travel on a fully charged battery, affected by travel surface and passenger weight.

4. **Turning Radius**: The space needed for the wheelchair to turn, usually measured in inches.

5. **Dimensions**: Overall size and specific measurements, including seat dimensions, to ensure it fits your intended space.

6. **Weight**: Refers to the overall weight or the weight of individual parts, which is important for transportation.

Considering these factors can help you choose the right power wheelchair for your needs.