24V, 1200 RPM, DC, brushed, 4"D, 6"L, very heavy. I'd like to get a better one.
Motor controller
Comes with a throttle that's mounted on the handlebars
Sprockets
There is a 9 tooth sprocket on the motor and 32 on the wheel.
Batteries
There are 3 lithium iron phosphate batteries in series. They are about 12.6 Volts when fully charged.
They're good for about 24km per charge.
Computer
The computer is not needed to run the bike. It's there to provide information to the rider. It measures battery voltage, current and revolutions of the motor shaft. There's also a clock module so that the time of day can be on the display. Calculations are done to provide more information.
The display shows the following information
Speed (km/hr.)
Distance travelled (km)
Current time
Power consumption (Watts)
Average battery voltage (V)
State of charge based on coulombs used (%)
State of charge based on voltage (%)
Charge used (A-hr.)
There are a variety of other values available to be displayed, but they're not that important and there's only so much room on the LCD.
Two methods for determining how much energy is left. Both are shown on the display.
Battery voltage. It can only be used while the battery is not under load. It's not that accurate.
Keeping track of how much energy is being used. This only works if the batteries are fully charged when plugged in. It's quite accurate.