Campagnolo Chorus EPS V2 Power UnitThe new design allows for internal mounting which not only offers the obvious aerodynamic benefits associated with hiding a component inside the frame but also keeps the unit protected from the elements and impact The EPS™ V2 Power Unit is an improvement with regards to aerodynamics, versatility, durability and protection but also plays a pivotal role in an aspect that is not to be overlooked; aesthetics. Giving the cyclist the possibility to use the most advanced groupset while maintaining sleekest look to his or her ride The EPS™ Power Unit™ is much more than just a battery. Its housing contains all the electronics of the EPS™ drivetrain, the system memory input/output gates and the battery charger plug. This design choice benefits both the reliability and the performance of the system, which is also upgradeable Features: External Or Internal Mounting: The new cylindrical format allows the battery to be mounted in a variety of positions, all of which confer an aerodynamic advantage. Specially Developed Internal Casing Designed To Absorb Road Vibrations And Impact: For maximum protection of the battery and electronic components on even the worst road surfaces. Casing With Ultrasonically Welded Seams: Makes the system 100% waterproof. Input/Output Gates: For charging the battery and, when necessary, diagnosing the system and updating the firmware and Eeprom. DTI™ Digital Tech Intelligence: The digital brain of the EPS™ drivetrain. DTI monitors and checks the battery, transmits and receives signals to and from the interface and controls and monitors the functions of the rear and front derailleur. The unit also checks for system faults, warning the user when necessary via an RGB LED and a buzzer. Adaptor needed for positioning in the seatpost: Enables the Power Unit V2 to be fixed rapidly in seatposts with a round or aerodynamic section Buy Campagnolo Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.