There are two key values on an e-mountain bike that are the main focus: The torque of the motor and the watt hours of the battery. The watt hours are the unit of measurement for the available work or energy, and the energy density is central to the battery. The declared goal of the CSEM research center in Neuchâtel is to achieve an energy density of 500 watt hours per kilogram by 2035. So far, this value is around 250 watt hours per kilogram. This means that battery weights should be halved by 2035, or the battery of the same weight should deliver twice as many watt hours as it does now.

Further information on the development of rechargeable batteries can be found in the interview with battery expert Andreas Hutter from the CSEM research center with the Basler Zeitung newspaper.