The Shimano junction box EW-JC200 is a Di2 E-Tube connector with junction B function, which has two slots. This allows you to connect two EW-SD50 power cables of your electronic drivetrain to each other. A special application of the EW-JC200 is also the connection of the shifter with the Di2 adapter B EW-EX010 on an e-bike with Bosch motor.
Information on the return and disposal of batteries and electrical equipment can be found here.
Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance.
I-EWJC200