Cheetah mini KBS, light & flexible trapezoidal motor controllers (12V-72V) (60A-200A)

Cheetah series, light &flexible Controllers,small size for easy installation.

To see Sinusoidal version,click here.

To see connectors’ detailed dimensions,click here




Additional information

Weight 1.7 lbs
Waterproof Connector Compact Connector Mini Waterproof Connector +$5.00
ModelNominal VoltageMax Operating Voltage1 Minute Boost CurrentContinuous Current
Kelly KBS Mini Brushless Motor Controller

KBS-X: The enhanced version of KBS-E.

KBS-Z: Based on KBS-E and KBS-X series , equiped with more compact and improved housing which provides higher continuous current.

Male or female connectors that matching the controller are included.


  • Intelligence with powerful microprocessor.
  • Synchronous rectification, ultra low drop, fast PWM to achieve very high efficiency.
  • Electronic reversing.
  • Voltage monitoring on 3 motor phases, bus, and power supply.
  • Voltage monitoring on voltage source 12V and 5V.
  • Current sense on all 3 motor phases.
  • Current control loop.
  • Hardware over current protection.
  • Hardware over voltage protection.
  • Configurable limit for motor current and battery current.
  • Support torque mode, speed mode, and balanced mode operation.
  • Low EMC.
  • LED fault code.
  • Battery protection: current cutback, warning and shutdown at configurable high and low battery voltage.
  • Rugged aluminum housing for maximum heat dissipation and harsh environment.
  • Rugged high current terminals, and rugged aviation connectors for small signal.
  • Thermal protection: current cut back, warning and shutdown on high temperature.
  • Configurable 60 degree or 120 degree hall position sensors.
  • Support motors with any number of poles.
  • Up to 40,000 electric RPM standard.
  • Support three modes of regenerative braking: brake switch regen, release throttle regen, 0-5V analog signal variable regen.
  • Configurable high pedal protection: the controller will not work if high throttle is detected at power on.
  • Current multiplication: Take less current from battery, output more current to motor.
  • Easy installation: 3-wire potentiometer will work.
  • Standard PC/Laptop computer to do programming. No special tools needed.
  • User program provided. Easy to use. No cost to customers.

General Specifications:

  • Frequency of Operation: 16.6kHz.
  • Standby Battery Current: < 0.5mA.
  • 5V Sensor Supply Current: 40mA.
  • Analog Brake and Throttle Input: 0-5 Volts. Can use 3-wire pot to produce 0-5V signal.
  • Reverse Alarm, Meter: <200mA. Main Contactor Coil Driver<2A.
  • Full Power Operating Temperature Range: 0℃ to 70℃ (MOSFET temperature).
  • Operating Temperature Range: -40℃ to 100℃, (MOSFET temperature).
  • Max Battery Current: Configurable.


Kelly KBS-X Controllers User Manual

Kelly KBS-E Controllers User Manual

Kelly KBS Configuration Program (PC Version)

Kelly KBS Configuration Program (Android Version)