This original battery for the PW-1000XL Foldawheel-XL is made of Soft Pack Polymer Li-ion cells, which is safer than the normal cylinder Li-ion battery cells.
It is also much lighter and more efficient than traditional Lead-Acid batteries.
Not only is it durable and a high capacity for such a small size, it is also very lightweight at 1.3 kg (2.8 lbs).
One battery allows the user to travel up to 10 km (6.2 miles). The PW-1000XL Foldawheel-XL can take up to two extra batteries which increases the range of the wheelchair up to 30 km (18.6 miles).
Only Available Directly From Wheelchair88
Currently, you can only buy batteries directly from the manufacturer Wheelchair88. You can find their website via this link. The batteries are not shown on their website, but if you make an enquiry to them via their contact form I am assured that there are batteries available.
The listing for PW-1000XL Foldawheel-XL can be found here.