The capacity of the 50 mile battery pack is 10Ah 360Wh
We follow the general rule copied by most eBike sellers that you get approx 10-15 miles per 100Wh capacity. Meaning on average our 360Wh battery will give 50 miles. Of course this can be more or less depending on how hard you pedal, and the power level
We have done extensive testing and 50 miles is an accurate measurement on the basis of using the kit at medium power (level 4 or 5) and pedalling hard (but not so hard as to sweat).