You can find all the parts and accessories you need for your bike at Escapa.
The Bosch Powermore Cable, 100mm Cable Guide to Battery Mount (BCH3923_100) is used to connect the Range Extender battery to your bike.
The Bosch Powermore Cable, 100mm Cable Guide Toward Battery Mount (BCH3923_100) connects to the PowerMore 250 battery and the charging port on your bike’s frame.
This cable is the version that runs toward the battery mount
Length: 100 mm