I just use it for closed circuit practice on a woodland course. I'm about 13 stone and pulls me up steep climbs no problem and can find traction. A friend who is about 16 stone also found it had plenty of power in the tank even on mid level power. Riding position and size is OK for my height 5'-10". David Knight has one and at over 6 foot, he seems very happy with it. Perhaps feels a bit low in terms of clearance and the forks could do with a beef up internally for heavier riders. Battery life seems OK. Hard to say as my course is pretty hard on juice due to the long climbs but after about 25 mins riding on mid setting its down to about 70% but I've had a pro-rider on max setting almost clean the bike out in 30 mins. But its a solid bike compared to their LBX . . .which was poor in our experience.