20A Brushless SimonK ESC Brushless Motor Controller

The Simonk 20A Brushless ESC is a professional-grade electronic speed controller designed for drones and RC vehicles. It enables precise control of brushless motors and features integrated low-voltage and overheat protection. Compatible with 2-3S Li-Po batteries, it supports high RPM values (up to 210,000 RPM), ensuring quick response and smooth performance.

Technical Specifications

• Continuous Current: 20A
• Max Burst Current (10s): 25A
• Battery Compatibility: 2-3S Li-Po
• BEC Output: 5V / 2A (Linear Mode)
• Dimensions: 55 x 28 x 7 mm
• Weight: 28 g

• Motor RPM*:

  • 2 Poles: 210,000 RPM
  • 6 Poles: 70,000 RPM
  • 12 Poles: 35,000 RPM

  *RPM values vary depending on motor structure.

Integrated Protection Systems

Includes low-voltage protection to prevent battery over-discharge and thermal monitoring to protect the motor from damage due to overheating.

High RPM Performance

Supports extremely high speeds, up to 210,000 RPM with 2-pole motors — ideal for racing drones.

Lightweight and Compact Design

With a weight of only 28 g and a compact size, it helps save space in drone designs.

Applications

• Drones & Multicopters: Fast and stable motor control in FPV racing drones.
• RC Cars & Boats: Smooth speed transitions in brushless-powered vehicles.
• DIY Projects: Ideal for robotics and custom electric vehicle designs.

How to Use

1. Connect the ESC to the three-phase wires of the brushless motor.
2. Connect a compatible 2-3S Li-Po battery.
3. Attach the signal cable to your receiver and perform calibration.
4. Test motor direction and throttle response.

Can it be used with a 3S Li-Po battery?

Yes, it works perfectly with 3S (11.1V) Li-Po batteries. Ensure voltage does not exceed 12.6V.

What is the purpose of the BEC output?

The BEC (Battery Eliminator Circuit) supplies 5V/2A power to components like the receiver and servos.

What happens in case of overheating?

The ESC automatically shuts down when the temperature exceeds 110°C to protect components.

How do I calibrate the motor?

Move the throttle stick to maximum, power the ESC, wait for two beeps, then move the stick to minimum.

Any installation tips?

Mount the ESC in a ventilated area for better heat dissipation and use double-sided tape to reduce vibration.