48V 750W BBS02B Bafang mid drive electric motor kit + 48V 12AH 750W battery 48V 12AH hailong electric bike battery Package included 1.48v 12ah 750w Lithium Battery 2.48v 750w 8fun/bafang motor crank kits 3. 54.6v 2.0a Charger :With EU/US/UK/AU Adapter you can choose Notice: If you choose battery , you will receive one battery and one charger . If you choose the motor, you will receive one motor kits . If you choose battery and motor , you will receive one battery, one charger and one motor kits Newest Bafang (8fun) HalloMotor Brushless Geared Mid-Drive Motor Conversion Kits, controller integrated, If you want to know how you can spend a lot of money on an electric bike and get the ultimate in efficiency and performance this is a good start. MID drives are not the easiest or the cheapest electric bikes to build, but can be the cream of the crop once you are out riding, especially off road, especially climbing hills or even mountains...... 48V 750W BBS02 Bafang Central Motor include: 1. 48v 750W BBS02 Bafang Central MotorMotor with integrated controller 2. 46T chainwheel and pedal arms (does not include pedals).(If you need other chainwheel,such as 44T/48T/52T,pls tell us before paying) 3.Waterproof interconnecting cabling 4.Thumb throttle 5.Pair of ebrakes for cable pull brakes 6.LCD display (C965) including power switch Spec: 1. Voltage: 48V current Limit:25A 2. Power: 750W 3. Motor Weight: 4.2kg 4. BB Length: 68mm (Suitable for 68mm or 73mm length BB Bike Modification) 5. Working Temperature of Dsplay: - 20- 80 6. Waterproof Grade: IP65 How do i know if the mid drive conversion kits will fit my bike? The Mid Drive Kits are designed to fit bikes with a 68mm (2.68 in.) or wide bottom bracket shell and 35mm inside diameter. This encompasses the vast majority of bikes excluding some newer high end bikes with an Integrated Bottom Bracket, and Fat tire Bikes with a 100mm wide bottom bracket shell. Mid-mounted electric bike advantages: The electric bike is mounted from the overall, top-level design, people-oriented, focusing on care of the battery (determined by accommodate design principles). To light the main structure, modeling simple, low-span oblique bending beam (very easy to get on and off), smooth ride, high vehicle efficiency (of the same capacity battery than the hub models riding increase 5-10 km, vehicle weight to reduce 4-8 kg) The biggest advantage of the electric bicycle is mounted: its battery, motor and gearbox are in the vicinity of the central axis of the bicycle. So it's a good center of gravity of the dynamic balance, low center of gravity riding unbalanced resistance, particularly without electricity as easy as riding a bicycle (built gearbox, gear --- sprocket combined deceleration clutch to maximize the use of standard bicycle members, human riding motor does not turn, no magnetic block phenomenon) at 20 kilometers per hour, power glide up to 200 meters (normal riding electric current, 24V car ≤5A, 36V car ≤3A) .24V15Ah integration batteries, electric continuous driving can reach more than 40 kilometers (vehicle weight of only 31 kg) 36 V car with three ordinary batteries, electric continuous driving up to 60 kilometers, starting torque up to 25Nm, 500W. In the home-electric vehicles. We can assist or help or strengthen riding all-electric mode. Vehicle bicycle high rate, maintainability, wearing parts and a bike maintenance is very convenient. Also unique advantages can be achieved mechanical multistage shifting, double speed (the rear axle with an ordinary bicycle, as the installation of mechanical transmission, which is the hub electric bicycles can not be achieved) such that motor efficiency is always at the highest efficiency work area. In different road conditions and wind can shift day shift driving, avoid large current impact. Mechanical low gear when climbing power will be greater, can bring people climb overpass. No wonder people call it double shift "climbing king", "double universally day." 
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