Battery powered scooters

Pride Mobility, we have the GoGo Traveler, the three wheeled mobility scooter, purchased 7 years ago has been used by both my wife and myself. We share based on who wears out first. I've replaced the two dry-cell batteries twice during that period, the batteries are available generically on the internet. It folds up and has been transported on planes, in rental cars, in the back of the Saturn Vue toad, and in our minivan. About 100lbs fully assembled, but I usually take out the seat and battery (both lift right off) making the unit about 50lbs so I can lift it myself. Most of the time someone is around and offers to help, even if I don't ask. There is a newer model with a Lithium battery which is 30lbs lighter, but I believe there are airplane restrictions on the Lithium battery. Retail price, then and now about $800
Happy Trails.