I've never used it for my power chair, but I've heard of some power chair users using the Armor All products to clean their power chair tires, chair frame, etc. They say it works pretty well, and it keeps the chair frame looking like new.
The way I clean my power chair is that I unplug the battery box from the chair, and take it out from it's spot. I then remove my entire seating system, and set that aside. It gives me more cleaning abilities for the hard-to-reach places, even though it's a big job to take my entire seating system off my power chair. The battery box is extremely heavy for me to lift/maneuver. But, I can do it. I've found that dirt, and other kinds of gunk tends to build up around the area of the drive motors in the hard-to-reach places.
Using a small hand-held vacuum might work also, for the loose dirt. I'm going to try this with my power chair tonight to see if it works. I've never done this before with my power chair as I've always wiped it down with a damp, soapy cloth. It might be worth a try though.
Samantha