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BAFANG BBS02 - User Manual

BAFANG BBS02
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CONVERSION KIT
Please read through carefully before beginning your conversion
User Manual
Mid Drive Electric Bike Kit
BBS Bafang Mid Drive
BBS01, BBS02, BBSHD
English

Questions and Answers

  • J
    Joyce FigueroaSep 2, 2025
    How to manage a crowded handlebar on a BAFANG BBS02?
    • N
      nicolemartinezSep 2, 2025
      If you have a crowded handlebar, try shuffling components around to create space. Alternatively, consider using a thumb throttle.
  • B
    Brian GonzalezAug 31, 2025
    What if the BAFANG BBS02 Bicycle motor still doesn't fit in the bottom bracket?
    • T
      Tyler TuckerAug 31, 2025
      If there isn't enough thread extending out the other side of your bottom bracket (10mm+ required) or the motor won't slide in due to a small diameter, you may need assistance from a bicycle mechanic.
  • J
    James ColemanAug 29, 2025
    What to do if the BAFANG BBS02 Bicycle motor does not fit in the bottom bracket?
    • L
      Linda RobertsAug 30, 2025
      Ensure your bike has an internal bottom bracket between 68 and 73mm wide for compatibility. If there are small defects like burrs, smooth them out with a file.
  • D
    danasotoAug 27, 2025
    How to troubleshoot a BAFANG BBS02 Bicycle kit that won’t turn on?
    • R
      Richard RobertsAug 28, 2025
      If the kit won’t turn on, use a multimeter to test the DC voltage output from the base of the battery. For a 36V kit, the voltage should be over 41V. If it's not, the battery may need testing and potential replacement.
  • D
    dianevelazquezAug 26, 2025
    How to fix a high pitched rattling noise when accelerating on my BAFANG BBS02?
    • K
      Karen VaughnAug 27, 2025
      A high-pitched rattling noise during acceleration may be due to loose parts. Check if the noise comes from the motor or from loose components like spokes or bolts on the rear rack. Tighten any loose parts to resolve the issue.
  • W
    William HamiltonAug 25, 2025
    What causes my BAFANG BBS02 battery to cut out intermittently?
    • C
      cynthia85Aug 25, 2025
      Intermittent battery cut-outs can happen if the battery is low on power or if you're going up a steep hill with a load on the motor. This can cause a voltage cut-off due to an overloaded controller.
  • T
    teresa23Aug 22, 2025
    Why my BAFANG Bicycle kit loses power over bumps?
    • T
      Thomas LloydAug 22, 2025
      Losing power over bumps can occur if connections are loose. Check all connections to ensure all plugs are fully connected. Also, verify that the battery is securely locked to the cradle and not loose.

Summary

Safety

Installation Process

Crank Removal

Step-by-step guide on how to remove existing bicycle cranks.

Motor Installation

Guide to fitting the main motor into the bicycle's bottom bracket area.

Battery; Battery Cradle Installation

Steps for mounting the battery cradle and securing the battery to the frame.

Wiring Installation

Steps for connecting all the electrical components of the conversion kit.

Battery Operation

Charging

Troubleshooting

BAFANG BBS02 Specifications

General IconGeneral
Voltage48V
Max Torque120 Nm
Weight4.2 kg
Waterproof RatingIP65
Motor TypeBrushless Motor
Max Speed45 km/h
DisplayDPC18
Chainring46T / 48T / 52T
Compatibility68-73mm bottom bracket width
Battery Compatibility48V
Gear Sensor CompatibilityYes
Brake Sensor CompatibilityYes
Power750W

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