B + M K-Werk Power Bank with Dynamo Connection for Rose Backroad

The K-Werk from Busch+Müller is not only a flexible energy storage system for travelling, but can also be charged directly while cycling via the hub dynamo to supply devices such as smartphones, bike computers and the like with power when required. 

In contrast to a conventional power bank, the K-Werk has a buffer battery with charge controller that enables charging via the dynamo and releases the energy evenly to protect connected devices. If the integrated 4900 mAh battery has enough power, you can of course continue charging your devices even when stationary. The bidirectional micro USB port also allows the K-Werk to be charged via a mains adapter so that you can always leave the house with a charged power bank.  

In the updated version, the K-Werk comes with slight modifications to the housing design, making it ideal for mounting on the mounting rail in the frame compartment of the Rose Backroad and Backroad AL models. Together with a hub dynamo, you can turn the USB-C port of your Backroad into a permanent charging station.

Details:
• Battery storage for power supply when on the move
• Suitable for frame compartment mounting in the Rose Backroad / Backroad AL (MY2025) 
• Velcro strap for alternative frame mounting on any bicycle model 
• Rechargeable via dynamo connection
• Bidirectional micro USB port for charging devices / charging via mains adapter
• Spray-resistant housing
• Stable, low-fluctuation power output
• LED display for charge level / remaining battery capacity
• Output cable for IQ-XM Speed headlights (enables light operation / charging of devices at the same time)
• Extensive accessories included (e.g. cable, plug, power adapter)

Technical details:
• Material: aluminium, plastic (housing)
• Battery type: lithium-ion battery
• Battery capacity: approx. 4.900 mAh
• Battery indicator: five-level charge indicator  
• Input current (via dynamo): ≈ 6 V alternating current (AC)
• Dynamo connection cable: Higo Mini C with open ends (approx. 80 cm)
• Output current (Micro USB): 7-2 volt direct current (DC) / max. 2 A
• Dimensions (LxWxH): approx. 107 x 65 x 40 mm
• Weight: approx. 275 g

Connections:
• 1 Micro USB (bidirectional input/output)
• 1 Higo Mini C input cable for dynamo connection
• 1 Higo Mini C output cable for IQ-XM Speed headlights

In the box:
• 1 Busch+Müller K-Werk power bank (suitable for Backroad models)
• 1 dynamo connection cable (open 2-core to Higo Mini C, approx. 80 cm) 
• 1 micro USB charging cable (micro USB plug to USB-A plug, approx. 35 cm)
• 1 power bank cable (micro USB plug to USB A socket, approx. 15 cm)
• 1 power adapter with USB-A socket
• 1 plug-in sleeve with plug insert for Shimano hub dynamos
• 2 female spade connectors
• 1 Velcro fastening strap
• 4 zip ties
• 2 textile cable ties
• 2 cover caps (with and without loop)
• 2 heat-shrink tubing
• 1 manual 
 

Fabricant: Busch & Müller KG, Auf dem Bamberg 1, 58540 Meinerzhagen, Germany, www.bumm.de/