Bafang BBS01B 250w 36v Electric Bike Conversion Kit
- At amazon.co.uk you can purchase Bafang 250W Mid Drive BBS01B 36V Ebike Mid Motor Conversion Kit With Battery Included optional 10Ah/17.4Ah LCD Display And Charger for only
- The lowest price of Bafang 250W Mid Drive BBS01B 36V Ebike Mid Motor Conversion Kit With Battery Included optional 10Ah/17.4Ah LCD Display And Charger was obtained on December 29, 2025 9:48 am.
Amazon.co.uk
Description
The Bafang BBS01B 250w is a safe bet if you want to stay on the right side of the law. It doesn’t have the raw power or grit factor of the 500w or 750w, but you can ride it to your hearts content safe in the knowledge that your e-bike is legal. For the full review of the Bafang BBS01B 250w click the link at the bottom of this page.
Summary
Thanks to its ‘plug and play’ design the Bafang BBS01B will fit a majority of regular bicycles with a few exceptions. Providing your bike has a standard BSA threaded bottom bracket then installation should be fairly straightforward for the competent DIY enthusiast.
The Bafang BBS01B 36v 250w is the perfect conversion kit for a daily commuter or leisure bike. You can even add this kit to your mountain bike to make riding on steep trails less of an effort.
If you don’t mind experimenting with the controller settings you can purchase a USB programming cable and download the free open source software – for more information on how to do this safely, follow the instructions on Karl’s electricbike-blog. The 250w and 350w are the same motor, the only difference is the 250w is set at 15A and the 350w is 18A. Obviously to stay within the confines of the law you should not increase the motor current as this will also increase the continuous power output. You can still fine-tune the pedal assist parameters and make the BBS01B super-smooth on the uptake.
Neat installation – because of the design, a Bafang BBS01B installation if done correctly will result in a very neat and professional looking e-bike conversion.
Choose your power! Most of the Bafang display units allow the rider to choose from up to 9 gradually incremented levels of assist. This means that you as the rider can either decide to stay within your comfort zone (for pedalling) or maybe push yourself that little bit hard and share the workload with the motor. I have written a separate article on using an e-bike to get fit and lose weight on my other website.
Motor Specification:
- Bafang Model: MMG340.250
- Motor Model: BBS01B
- Power: 250W (540w peak with 36v battery)
- Voltage: 36V
- Controller Current: 15A
- No Load Speed(RPM): 83-87
- Load Speed(RPM): 78-83
- MAX Torque: 80 N.m
- Top Speed: 28km/h (depends on bike gearing)
- Efficiency: > 80%
- PAS SENSOR: Cadence and Speed Sensor
- Reduction Ratio: 1 : 21.9
- Certification: CE/EN 14764/ROHS
- Waterproof Grade: IP65
- Bracket bottom length: 68mm-73mm standard threaded BSA type
- Motor Operation Temperature: -20℃-45℃
What’s in the box:
- Bafang mid drive motor unit
- Crank arms (pair)
- Chainring
- Brake Lever or Hydraulic Brake Sensor (
- Thumb Throttle
- External Speed Sensor
- Display(DPC18,850C,C965)
- 1T4 cable (wiring harness)
- Assorted fixings
Legal notice
Conclusion
The Bafang BBS01B will transform your humble commuter bike or mountain bike into a road-legal electric bike that will rival your friends £2500 Bosch-powered e-bike for performance. It may not be as refined as the Bosch motor but for shear value for money, it’s hard to beat!
Please check out the review below for more information of the Bafang BBS01B 250w.
