Euy S4 is equipped with a 48V 25Ah lithium battery, when the e-bike is fully charged, it can last 45~60 miles in throttle mode and 100 miles in pedal assist mode. With a detachable battery design, you can charge your battery anywhere. With a lock in the battery, you can lock it to prevent the battery from being stolen. 7-8 hours for a full charge which is enough for daily commuting and adventure needs. IPX4 water resistance rating, safety in heavy rain.