Isch-Dish Thin Cushion Covers

I've been using the ZX-1 power add-on for one year now. For its intended function it works great, but the range is limited (2-3 miles). I work in an office environment and occasionally I need to perform field work. When I'm in the office or at home I unhook the ZX-1 and then I'm back to a fully functional manual wheelchair. I'm a T-3 para so I like this ability. Good news is that Spinergy now uses a lithium battery, which doubles the range. If you own one under the old battery system Spinergy can easily convert it to lithium power with a few modifications so you need to contact them, which I have done. Overall I'm satisfied with my ZX-1 and I will be more so when i convert to lithium power and increase my range.