What is best mileage (distance)on a single charge on a 48 volt 17 amp hour battery using a Bafang 1000 watt BBSHD motor.
Your weight, the speed you are traveling, the land you ride on, like are there hills or no?
Are you using PAS, which level, are you just using throttle?
In my opinion, that battery should get you around 15 up to 20 or so miles per charge if you ride in PAS 1-3 possibly.