Some really great info.Thanks for the replies.
Obviously I need to do some more research..I never realized batteries for these could be so darn expensive..sheesh!
How long would they last under normal use, before needing replacement? I imagine regularly charging them would be crucial? Let it sit for six months without a charge and I bet they could go downhill petty fast. Least regular batteries seem to suffer from this.
This one caught my eye. I like that it is quite compact, and not a huge initial outlay. I have no idea of the quality though..
http://www.costco.ca/GIO-H2-Volt-Lithium-Ion-Foldable-Electric-Bicycle.product.100057334.html