*Busch and Muller E-Werk / USB-Werk - power electronic devices using your bike's hub dynamo!

This is a brilliant, compact device made by German light wallahs Busch und Muller.

If you have a hub dynamo on  your bike you can use the E-Werk to power and recharge electronic devices such as mobile phones, gps devices, cameras and batteries.

Personally, we have used these when touring - they keep power hungry smart phones topped up and reduce the need for the nightly hunt for recharging points - which is VERY important when you are camping or in far away, strange places!

You can pretty much charge anything with the E-Werk but we TOTALLY recommend that you use the E-Werk in conjunction with the E-Werk Cache Battery or the USB-Werk with integrated cache battery. The Cache battery (available separately or as a bundle - see menu)  acts as a buffer between the power coming from the dynamo on your front wheel to the device you are charging. The cache battery does two things - it provides a steady flow of charge to the device you are charging and (most importantly) it prevents the device from any surges in power that could damage its circuits. On some devices the E-werk on its own will not charge unless the bike is travelling at 15 mph or more which, on a fully laden touring bike on undulating terrain, might be impossible! However, with the Cache Battery in place it will store up the energy you create and dispense it to your charging device smoothly and safely. 

The voltage and current can be adjusted in small increments to suit the mobile device being charged. Maximum voltage is 13.3V and current upto 1.5A. 

The E-WERK begins to charge a device at about 8 km/h. At about 15 km/h the E-WERK is charging as quickly as quickly as a standard mains connected charger. It can be fed with up to 50 V DC so that it can operate with an e-bike or car battery.

The E-WERK can be connected to bicycle frames of varying diameters in any suitable position by utilising the runner bands or cables straps
  • For dynamo or battery connection
  • Multiple connection options for USB, Mini USB and Micro USB devices
  • Supplied with 2 free cables for individual connections
  • Supplied with special plugs for SON and Shimano hub dynamos
  • Splash and rainwater proof
  • Measurements: W x : x H: 32 x 88 x 23mm 
  • Weight: approx. 53 g (without accessories)
Cache Battery Info.

The E-WERK will charge the cache battery at approximate speeds from 15km/h and faster to a capacity of 80% after about eight hours. The LED indicator glows to show that the battery pack is charging.

The battery comes in a nylon bag that can be fixed on bicycle frames of all diameters using an adhesive cloth tape
  • Input: 5.6V DC (e.g. from E-Werk)
  • Output: 5V DC
  • Capacity: Approx. 1400 mAh
  • Charge Indication LED
  • Dimensions with nylon bag: Approximately 80 x 40 x 40 mm
  • Circular Plug 3.5 x 1.35 mm (can be fixed splash and rainwater proof with the connectors of the E-Werk)
  • Weight: Approximately 180g
  • Please note: Only attach devices which are designed to be powered or charged by a 5V supply
NOW AVAILABLE WITH INTEGRATED CACHE BATTERY! (this is the USB-WERK)- SEE MENU

We have lots of B&M lights, dynamos and accessories in our ebay shop....

COMBINED SHIPPING

If you are buying several items from us we ask that you add the items you want to your ebay basket and then please request or wait for an invoice from us before you pay. This gives us the opportunity to work out the cheapest and fastest possible way of shipping the items to you. Alternatively pay the full amount and we will refund any shipping overpayment.

We want you to get the best value shipping possible. For many of the smaller items we sell we post them by Royal Mail 1st Class. The larger Items, bags, racks, tyres etc are often more economically sent by courier depending on their size and weight.