The Shimano Steps BT-E8035 Battery 504Wh Frame Down Tube Integrated Mount is a high quality, long lasting integrated frame mounting lithium-ion battery for Shimano Steps systems. In normal mode the riding distance provided by this battery could exceed 100 km. This Shimano battery features a waterproof design as well as impact and vibration resistance. Shimano Steps BT-E8035 Battery 504Wh Frame Down Tube Integrated Mount Features 1000 charge cycles without significant power loss Approximately five hours charge time Charge level display with error signal info and on/off switch Charging port Lock system for off bike security High 504Wh capacity (36V, 14Ah) Average weight: 2900g