The only answer to that is ‘how long is a piece of string’. The battery life is impacted by a number of factors, like how much weight you are carrying, how many hills you ride and how high you have the electric assist set. On flat rides with the electric assist set to a low level, expect to get up to 50-60km on a charge. On rides with some hills and moderate electric assist, expect to get up to 40km on a charge. We find our Tribe is ready to go home well before the battery runs out!