1) Sealed Lead Acid $165
It's the least expensive, and can withstand being left in a hot car trunk, but it weighs 20 lbs and hasn't the lowest capacity of any of the batteries. A 180-lb person will get about 8 miles out of this battery on a level surface.
2) Lithium Ion (single capacity) $695
More expensive than the SLA battery, but only weighs 6 lbs. A 180-lb person will get about 12 miles out of this battery on a level surface.
3) Lithium Ion (new) $1295
The mostly costly and the highest capacity. Hardy Huber (TravelScoot owner) weighs 240 lbs and he gets 22 miles continuous driving on a level surface. He says it's only 2 1/4 pounds heavier than the single capacity.
I own all three batteries. My favorite for most trips is the single capacity lithium ion. It's lightweight and works well for me in most situations. I bought an SLA so I could leave it in the trunk of my car. I use it when I'm out and about and need my scooter, but hadn't planned ahead and brought the lithium ion battery. I bought the new lithium ion battery because
If I could only own one battery it would be the single capacity lithium ion. There is a huge difference in weight between the SLA and the lithium ion and I feel it EVERY time I lift it in and out of the trunk of my car. Ask me after this weekend and "Mac Daddy" will probably be my favorite.
The "Mac Daddy" Lithium Ion TravelScoot Battery
(Mac Daddy: Biggest and Baddest)
New battery charger
The (original) single capacity sitting in front of the new, higher capacity battery