bike Conversion Kit Electric Bicycle Mid Drive Engine 48V 52V 20Ah 19.2Ah Hailong Battery Kit

Sale price $398.93 Regular price $398.93

Shipping calculated at checkout.


Wattage: > 400w

Warranty: 1 Year

Voltage: 48V

Origin: Mainland China

Motor Type: Side Hung Motor

Max speed: 50-55km/h

Maintain Point: USA/ France /Poland / Germany /Russia

Downtube Battery size: 367.2*90.1*111mm

Discharge Temperature: -15-65℃

Design: Brushless

Delivery Time: 1-7 Day Delivery

Cycle Life: 1000 times

Charger: 2 - 4 A

Charge Temperature: -15-65℃

Chain wheel: 36T/44T/46T/48T/52T Option (Free Cahnge )

Certification: CE

Brand Name: BAFANG

Bottom bracket: 68mm

Battery Normal Voltage: 48V

Battery Capacity: 13Ah /17.5Ah/19.2Ah/20Ah

Bafang controller: inside the motor

Bafang Model: G340.750

17.5Ah / 19.2Ah /20Ah Battery Cells: S amsung /L G / P anasonic

13Ah / 17.5Ah Rear Cells: Grade A


Product Feature:
>>>Perfect Designed BAFANG M-SERIES
Powerful, quiet and perfectly integrated - these are the attributes of the Bafang M-Series. Due to the compact design, the mid-motors of the M-Series can be installed inconspicuously on many types of eBike. A key characteristic is their extremely harmonious handling.
>>>Universal Compatible
Bafang BBS02B Mid drive kit is compatiable with mountain bike,road bike and so on. This kit is designed to fit a standard 68-73mm (length) and 34-36mm (internal diameter) bottom bracket. If you need the 100MM bottom bracket, please contact us or leave note .We will change for you for free .
>>>Powerful and Reliable Motor
The BBS02 750W motor max torque up to 120 N.m. This mid speed sensor motor will easily climb stairs, The max torque of BAFANG BBS02 is 120 Nm . Top Speed can reach 50KMH (27.5“ bike). You can cycle on the road or climb the mountains much faster and easier , which really plays a great role in your daily life especially for the old . Privode more powerful when you riding on the road or climb the mountains. It's a good gift for Wife/Husband and a special gift for the elder people
>>>Easy Installation & Three Riding ModeEasily convert your pedal bike into a electric bike, we will offer a installation video. Three riding Mode (E-bike & Pedal Assisted bicycle& Pedal Bike) for you to choose, you can choose the E-bike to enjoy a long time travel, and also exercise Various modes satisfy your different needs , this eBike motor can make your cycling trip more exciting.
>>>Long Battery Life & Equiped with BMS
Protective plate and built-in Over-Charge Protection , Over-Discharge Protection , Short Circuit Protection and Over-Current Protection , the down tube battery is very safe to use on your BBS02B ebike motor conversion kit . There is a safty lock on the battery case which can prevent from theft

Greenergy M-Series Customization Service

  • For the Chainwheel, there have36T 44T 48T 52T for you to choose. If you would like to change, you could make a note in orders or leave a message for us, then we will change it for free. It should noted that 36T come without cover guard , 44T-52T will come with vover guard.

  • For the Brake System, there is Brake Lever or Brake Sensor for you to choose. It can free change for you .

  • For the Display, there is Various LCD Display for you to choose . T1 Touch Screen, DPC181 Bluetooth, DPC18, P860ML, 850C New, 500C, 750C Bluetooth, 500C-H, 850C, C961, 800S or DM03 for your choice.

  • For Gear Shift Sensor ,It Not included for you , It need to order extra . We recommend you use it which makes easy to shift the gear / speed

Motor Specification:

Bafang Model: G340.750
Controller Current: 25A
No Load Speed(RPM) :140-160
Load Speed(RPM):120-135
MAX Torque:100 N.m
Max speed:50-55km/h
Efficiency: > 85%
PAS 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:68mm
Motor Operation Temperature:-20℃-45℃


Performance engineered, Greenergy batteries always get you there. Combining the latest technology and years of industry know-how, we have developed lightweight, fast-charging, long-life batteries that provide the highest level of efficiency. From intube to racktype, the range will meet the needs of any project. With such diverse options, We has the solution to power-up any eBike.


Perfectly designed to bring you all the key information at a glance. employ the latest technologies in an easy-to-use package, with exceptional connectivity that keeps the information flowing through any ride. Covering all kinds of setup, Bafang is an ideal companion no matter your style, from eMTB to eCity, and with Bluetooth and USB connection options, you can sync up your devices for a seamless experience.

How Do I Know Whether the Kit Suitable For My Bike ?

  • Bafang BBS02B 750W Mid drive kit is compatiable with mountain bike,road bike and so on

  • Please use a caliper to measure the dimension of your bike's bottom bracket . The length should be 68-73mm or 100mm. The inner diameter should be 34-36mm. And you can calculate if the chainring will touch your rear bike frame if your bike is differently designed.

  • If you need washer for the kit , you could leave a note in orders or contact us


Packaging included:

1 * 48V 750W (68-73mm Default)Mid Drive Motor built in controller.  ( If you need 100mm , You could leave us note )

1 Pair * Brake Levers or Brake Sensors

1 Pair * Crank

1 Pair * Chainwheel (44TDefault /36T/46T/48T/52T opition, please kindly leave us message if you want change the chain wheel)

1 Set * Thumb Throttle

1 Set * Speed Sensor

1 * Display( Optional)

1 * 4 in 1 EB-BUS Cable

1 * Accessories

1*  Battery (Optional )

1*  Charger (Optional )

Present For You:
1 PC 6V Front Light + 1 PC Gloves1 + 1 PC Install Tool Wrench + 1 PC Crank Removable Tool + 1 PC XT60 Port Motor Battery Connector Cable + 1 set * Install Accessories for 73mm Bottom Bracket + 4 PCS 36V 250W Stickers + Cable ties + User Manual
  • Please kindly note that the distance between speed sensor and magnet should be 5-8mm . Careful instllation makes your riding trip more wonderful .
  • Before installing the motor, please follow the steps in the manual to connect the motor to see if the motor can work normally. Please DO NOT remove any connection with the power supply is on.


  • Ride your ebike with family or firends , have a great time on holidays . Feel free to ask for Greenergy help , always here for you .

  • To place a new order and get a BAFANG KIT , Much fun with BAFANG Motor , Ride Your Electric bike and  Creat More Exciting !

  • Boost Your Ride , With BAFANG Kit , You could same more money and time in daily life .

Questions You Might Be Concerned With (FAQ)

Q1: How to choose a display ?

A1: The main differences of the ebike displays are the interface , screen and holder size , specific function (check the display image above). If you want to quick decide which display should you choose, please check: NEW Arrivals : Touch Screen T1 Display - Intelligent control with touch screen , Multi-language support , Pattern unlock . B02N-U Bluetooth ,DZ40 Mini . Popular Displays : 500C , 850C , P850C , P860C (Multi Language) , DPC18 , DPC181 Bluetooth , 750C Bluetooth , DM03 Cost Effective Displays : 500C , 500C-H , DM03 , C961 , 800S

Q2: How to choose a chainring for ebike conversion ?

A2: For a normal pedal bike without electricity, (1) small chainring is more compatible with mountain bike which can help you climb easier. (2) big chaining is more suitable for city bike, road bike and foldable bike which can help you enjoy faster speed .

Q3: Do I need a battery for the ebike kit?

A3: Yes, but there is no battery included in the option of this listing. If you need it, We advice that you could order it extra in our store so that we could ship you together .