Battery question
 

I am getting ready to purchase a mini pro for use as a mobility device. If I purchase the 320 model, how difficult is it to install the 260 battery? The purpose would be to take it on the airplane with me. I only fly once a year so would like the larger battery for running around town.

I think you'll find that the 260 battery is still too large to take on a plane.

two battery or not two battery
 

Your best confirmation is to call the airline you're using they'll confirm take onboard or check in cargo. People apparently have checked in their I2 Segways as a mobility device