I have a BBS-01 mid-drive on my 2003 Giant NRS-1 mtn bike, which I use to commute to work, 17 miles per round trip. I have an AllCell 36V 10.4 Ahr battery in a frame bag. I use about 150-180 Whr on my commute (10 miles/whr). I do enjoy pedaling and the occasional drink from a water bottle, but...