I must say that while I am now more than happy riding my Woosh CD Sport, having upgraded the brakes,fitted mudguards and replaced the handle bars. I am not so happy with the battery life though, I reckon I am only getting about 15 - 18 miles out of a charge, No I dont use the motor on high settings, mostly on number 2 assist and middle range, only raise motor assist to 4 - 5 with higher gear for inclines. As the bike is very similar to the standard Woosh CD, would a rack and Standard CD battery fit with no wiring mods, would it just be a matter of removing bottle battery, fitting new rack and battery and plugging cables to existing ones. The battery on the CD seems to have more life than the bottle one.