The Rohloff E-14 electronic shifter is compatible with Bosch eBikes that are equipped with the Intuvia, Kiox, or Nyon displays, and the Panasonic mid-drive motor when paired with the Panasonic FIT display. Outside of these two motor systems, the E-14 is not compatible with other eBikes.
Since the E-14 is an electronic shifting system, it can not be installed on analog bicycles. However, the original Rohloff SPEEDHUB 500/14 (non-electric) might be the perfect upgrade for your bike if you’re looking for an efficient and high-quality internal transmission.