hi eagle rider
sorry to take so long to reply . big heavy battery have done a 40 mile ride on it small hills big hills throttle and power, peddling controller showed 1 light left which I reckon I could get another 15 miles out of it but sore bum would not let me. on other topic bike has done 1100 miles have changed the chain (I diddent realise u need two chains because of battery sitting behind seat post)when taking chain off I noticed excessive play in the bottom bracket but turned out to be chain ring which is just pressed on to pedal crank other than having front wheel spokes tightened I like the bike very much built like a tank and just as heavy