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Brushless Motor Checker

brushless motor tester
brushless motor tester
brushless motor tester
brushless motor tester
brushless motor tester

This is a professional tool that all serious racers should have.  It’s inexpensive, easy to use, and provides useful data to gain the edge over your competition.

INTRODUCTION – The motor checker is a precision electronic device that is especially designed for measuring the KV value, RPM, current (amp) draw and sensor function of brushless motors, without the need of a speed control.  The 2X 16 character LCD display shows real-time measurements of both sensored and sensor-less brushless motors.  It runs on any 7.4v Li-Po battery pack, so no additional power suppy is required.


  1. BRUSHLESS MOTOR CHECKING (Both Sensored & Sensor-less)
  • KV Measurement (how many thousands of RPM a motor has per volt of input power) For example: A 4.5kv motor produces 4,500 RPM’s for every 1 volt of input power.  At 7.4 volts this motor would produce 33,300 RPM’s (4,500 x 7.4 = 33,300)
  • RPM Measurement (8 throttle increments)
  • Ampere Measurement (current draw by testing motor up to 18A)


  • Tests proper function of internal sensors (sensored motors only) – Very important if you are having problems with your motor.  This is the first thing to check when your motor isn’t working properly.


  • Fix voltage from 2.5V to 7.2V or 10 steps cycle with variable voltage setting from 2.5V to 7.2V.


  • INPUT VOLTAGE: 7.4 – 8.6V (Suggested to use a 7.4V 2S LiPo battery)
  • LCD DISPLAY SCREEN: blue backlight background, white text, 16 characters x 2 lines
  • DIMENSIONS: 136.5mm x 80.6mm x 47mm
  • WEIGHT: 290 grams
  • SUPPORTED MOTORS: Sensored or Sensor-less Brushless Motors (A) Standard 540 Size R/C Car Motor: 2.5 turn and over, 2 poles (B) Flight Motor: support sensor-less brushless motor, 6 poles (out-runner motor).  All with current draw less than 18 amps at 8.4V without loading.


  • Test Unit
  • Power Cord
  • Sensor Cable
  • A, B, C Motor Connector Leads
  • Detailed Instructions