Cycle Charged

Bafang 750W BBS02 Mid Drive Kit with Battery

$999.99

We have lots of Bafang BBS02's in stock in the USA, Canada, Germany, Australia and China! Kits typically arrive at your door within 7-10 days in North America and Western Europe. 

Check out our installation video showing you how to make your installation super easy!


The best-selling Bafang mid-drive electric conversion kit known for its efficiency, reliability and power. Turn your everyday bicycle into a serious machine with this electric bike kit that can keep up with city traffic and tackle hills with ease! This kit is fully street legal. 

This kit includes a frame-mount or rack-mount lithium-ion battery, all the hardware, wiring and BBS tool so you have everything you need to get rolling! If you need longer battery or motor cables for a specific recumbent or trike setup just send us a message, we can help you with custom wire lengths as well. 

We offer FREE SHIPPING of this kit to the US, Canada and Western Europe! Please note due to regulations regarding Lithium-ion battery shipments, the battery will arrive a few days later in a separate package from the motor and kit components.  

Kit Includes:

1. Bafang mid drive motor 48V 750W 
2. Chain Wheel (Choose between 44T 46T 48T 52T)
3. Display (C965 or DPC-18 Option)
4. Crank
5. Thumb Throttle
6. 1 to 4 Wiring Harness Cables 
7. Speed Sensor & Magnets
8. Mechanical Brake Lever/Hydraulic brake sensor
9. Nuts/Bolts
10. Battery (48V choice of 12Ah/17.5Ah frame and rack mount)
11. Battery Charger
12. BBS Tool to tighten the motor
13. To add Bafang accessories (Gear sensor cut-off HERE /USB Programming Cable HERE

How do you know this kit will fit your bike?

Measure the width of your bottom bracket between the pedals to measure your BBS width, as seen below. The inner diameter of the frame bracket should be not less than 33.5mm. If you have a recumbent bike or trike follow the same measuring process as these kits fit those bikes and are very popular for those applications as well. 

68mm OR 2" 11/16th looks like this:

73mm OR 2" 7/8th looks like this:

The standard kit will fit 68-73mm wide frames. If you have a wider frame of 100mm or 120mm check out the BBSHD 1000W kit which comes in those sizes.

Approximate range* of each lithium-ion battery:

Voltage Amp Hours  Total Watt-Hours Range (miles) Range (km)
48V
12Ah 576 Wh 25 - 42  42 - 
70 
48V
17.5Ah 840 Wh 34 - 56 55 - 
93 


*Range depends on a number of factors such as amount of throttle and pedal assist, type and pressure of tires, type of terrain, rider weight, etc.

Fitment Checklist:

1 - Check that there is a 68-73mm (2.6-2.8 inch) gap in your bottom bracket between the pedals. 
2 - Check your frame size to ensure the frame-mount battery will fit (
L368mm x W90mm x H113mm) (L14.4" x W3.5" x H4.4")
3 - Choose mechanical brakes with sensors (standard) or hydraulic brake sensors. 
4- Choose your chain ring: 44T offers the most low-speed acceleration and torque, 52T offers the highest speed. 46T is standard and ideal for a mix of hills and flat terrain and everyday riding. Please leave us a note when placing your order for the type of chain ring you'd like! 

Motor Specs:
Power:750W 
Voltage:48V 
Controller Current: 25A 
Load Speed(RPM):120-135 
MAX Torque:160 N.m 
Max speed:50-55km/h 
Efficiency: > 85%
Sensor: Speed Sensor
Reduction Ratio: 1 : 21.9
Certification:CE/EN 14764/ROHS
Waterproof Grade:IP65 
Net Motor Weight: 4.24kg 
Motor kits Weight:5.6-6.0kg 
Bracket bottom length:68-73mm 
Motor Operation Temperature:-20℃-45℃

 

Lithium-ion Battery Specs:

12Ah 48V Battery:

Battery Cell:Built in Samsung 29ET 2900mah.52PCS 
Array mode:13s4p
Battery size:367.2*90.1*111mm
Battery Weight:4.1KG
Max Constant Discharge Current:25A
Peak current:60A
Charge voltage:54.6V
Discharge cut off voltage:36.4V
Way of Charge:CC/CV
Cycle Life:1000 times
Charge Temperature:-15-65℃
Discharge Temperature:-15-65℃
Protection Function:Over charge, Over discharge,Over current, Short circuit,Balance

 

17.5Ah 48V Frame-Mount Battery:

Battery Cell:Built in Samsung 35ET 3500mah.65PCS 
Array mode:13s5p
Battery size:367.2*90.1*111mm
Battery Weight:4.4KG
Max Constant Discharge Current:30A
Peak current:60A
Charge voltage:54.6V
Discharge cut off voltage:36.4V
Way of Charge:CC/CV
Cycle Life:1000 times
Charge Temperature:-15-65℃
Discharge Temperature:-15-65℃
Protection Function:Over charge, Over discharge,Over current, Short circuit,  Balance


17.5Ah 48V Rack-Mount Battery:

Battery Cell:Built in 2500mah 71PCS 
Array mode:13s7p
Battery size: 475.9*162*88.9mm
Battery Weight:6KG
Max Constant Discharge Current:30A
Peak current:60A
Charge voltage:54.6V
Discharge cut off voltage:36.4V
Way of Charge:CC/CV
Cycle Life:1000 times
Charge Temperature:-15-65℃
Discharge Temperature:-15-65℃
Protection Function:Over charge, Over discharge,Over current, Short circuit,  Balance

 

Display Options:

C18 Display: (Click here for spec sheet)
-Full Color Display
-Automatic Night Mode (with customizable light sensitivity)
-Current Speed (mph or km/h)
-Maximum Speed (mph or km/h)
-Average Speed (mph or km/h)
-Duration Single Trip
-Distance Single Trip
-Total Distance
-Reset Duration S.T.
-Reset Distance S.T.
-Battery Level
-Error Code Display
-Walk Boost
-Backlight
-Input Wheel Diameter
-USB charging port

C965 Display: (Click here for spec sheet)
-Speed display: AVG SPEED, MAX SPEED and SPEED (Real-time).
-Kilometre / Mile: Can be set according to customers’ preference.
-Battery indicator
-The brightness of the backlight adjustable: 5-sections.
-9-level Assist (default): 3 or 5-level can be selected.
-Mileage indicator: Odometer/Trip distance/ Riding time/Power.
-Error code indicator
-Up to 9 levels of assist
-Choice of Percentage or Voltage display for Battery
-USB Charger
-Accurate battery gauge
-Watt OR Amp Display to gauge how much you are pulling
-Clock
-Password Lock
-Error code list and memory

 

Customer Reviews

Based on 7 reviews
86%
(6)
14%
(1)
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(0)
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R
Randy Yarr
BBS02

Great kit ,install was straight forward. Tim at Cyclecharged made it all work. My only complaint was the amount of cabling. A shorter main harness (90cms) down to 30cms would have made a neater finish. Fun to ride though.

L
Lise St-Cerny
Battery

Yes are still waiting for the battery for the last command we made.
We bought Two other kit and we love it but the dysplay of the first kit is already broken we had to buy another one.

e
e.H.
Great customer service, great kit!

I ordered and built a bike with this kit 3 months ago and have been loving it ever since. It was easy to install, the videos were very helpful!

I ride every day and it has made it so much less daunting to transition to choosing the bike over the car. There's already almost 400 miles on the build and I have had no problems. Mark walked me through ordering and helped with questions and mix-ups I had while ordering. Great customer service!

K
Kevin
Very satisfied.

Purchased a mid drive kit to install on my wife's step through Raleigh. Delivery time was better than promised. Cyclecharged response to questions was very timely. Viewed several videos on installation to cover various issues. Installation went well, pretty much plug and play. Only issue I had with the kit was the included wrench for the outer ring was slightly small. Was able to tighten it otherwise.
Due to the weather in Ohio, it's only been ridden for a few miles on the initial test ride, but so far so good. Looking forward to giving it more of a workout soon.
Would definitely do business with cyclecharged again.

A
Alan
Purchased 2 Bafang Kits

I had been looking at purchasing a Bafang E-Bike kit for over a year. I had a hard time getting myself to pull the trigger. After much delay, I looked at cyclecharged.com. Still concerned, I started asking questions with the online chat support with this site. They patiently answered all technical questions and concerns about installation, compatibility, performance, etc. Finally I ordered 2 kits for my wife and I. The unit came about a week ahead of what I was told when ordering. I watched at least 10 videos on youtube.com showing various issues that I may run in to during the install. Once I started the project, I had both units installed in about 4 hours. The first one took about 3 hours because I could not get my old pedals off my bike. The 2nd unit was installed in about an hour as I avoided mistakes on the first build. As I finished the 2nd unit, I noticed that the battery mount was cracked. I took pictures and sent in to cyclecharged.com support. They sent me a new mount shortly after. I am very happy with these units and I am very happy with the support and follow up I experienced with cyclecharged.com. On a scale from 1 to 5, they are a 6!!