The controller box is the controlling computer of the cargo bike and is located under the luggage carrier, so you put the battery in here.

Do you want to purchase a new pedal sensor? And do you have an R37 or R45 battery? Then this is the part you are looking for. Suitable for model years Sept 2016 to present.

do you want to buy a new display? And do you have an R37 battery? Then this is the part you are looking for. Only suitable for models with battery-operated lighting. Suitable for model years Jan 2014 to Sept 2016.

Does the controller box of your cargo bike need to be replaced? Order a new one here. At the bottom of the battery you can see which type of battery you have. If you have an R37 battery, you need this R37 controller box.