Treks Removable Integrated Battery System (RIB) looks good and is user-friendly: the battery is completely integrated into the frame, providing excellent protection, and can be easily removed without tools, while also leaving room for a water bottle holder. This bike expands horizons: the top-notch Bosch system is suitable for daily commuting, leisurely rides, and plenty of fun on the trails. The Purion controller features a Walk Assist function and an intelligent eMTB mode that automatically delivers the necessary power depending on the terrain. Thanks to the external charging port, you can easily and conveniently charge the battery while it's in the frame or when removed.