[MENTION=4635]hockey[/MENTION] It's a Bafang BBS-02, 350W, with brake and gear sensors, and a 52V battery. We can easily ride 50 miles with a mix of large and rolling hills with battery to spare. As I said, it's revolutionized cycling for her. I'll hear her chatting while riding up a hill or asking me "did you see that?" when I'm simply trying to focus on the effort climbing.