Electric Bike Drive Systems
The top 5 companies that make technology for electric bikes are Bosch, Brose, Shimano, Yahama, and Bafang.
Electric Bike Motor
Ebike motors consist of an electric motor, gear box, motor controller, torque sensor, cadence sensor, and/or speed sensor...all housed in a compact enclosure. Electric bike motors range from 250W to 1,000W and above, with the majority of ebike motors being 250W or 350W. Electric bike motors can be mid-drive units (mounted at the pedal crankset), rear hub (mounted on the rear wheel), or front hub (mounted on the front wheel). Most ebike motors are either mid-drive or rear hub units.
Bosch Motors (all mid-drive)
Electric Bike Batteries (Ah)
Ebike batteries consist of the battery, battery management system (BMS) and associated charger. Electric bike batteries are available at 36V, 48V, 52V, and 72V, with the majority of batteries being 36V or 48V, matched to the motor. Electric bike batteries are either frame mounted (internally or externally) or rear-rack mounted (a few are fronted-mounted in a bag too). Internally-mounted batteries are usually located inside the down tube and are not visible, presented an integrated look. Externally mounted frame batteries are usually located on the down tube, but a few vendors also use a triangle enclosure that is mounted between the frame members.
Electric Bike Displays
All the major ebike technology vendors offer a handle-bar mounted console/display unit, which is a small computer that provides bike telemetry, ride modes, range calculation, speed, and other pertinent data. Many offer bluetook capability that allows you to sync with your smartphone.
Electric Bike Apps
There a few ebike apps available for your smartphone., with the big ones being the Bosch COBI.bike app, Shimano E-TUBE app, ESB.bike app, and the MAHLE app from Ebikemotion. These are all cloud-based and allow you send bike data to the cloud, and receive data from other e-bikes.