Hobbywing SkyWalker Brushless Controller - 20 A, 7.4-14.8 V, BEC 5 V

Product overview

• Brushless ESC for electric aircraft models with output up to approximately 240 W
• Input voltage of 7.4 to 14.8 V, compatible with 2S and 3S lithium batteries
• Continuous current of 20 A, peak current up to 30 A
• Programmable behavior via the associated software or PWM signals
• 5 V BEC output for powering the receiver and servo
• Weight under 15 g and compact dimensions for lightweight aircraft models
• Sensored mode with improved startup behavior even at low speeds

Product description

This brushless ESC electronically controls commutated motors in aircraft models and similar applications. With a rated output of approximately 240 W at 3S battery voltage, the ESC is in the medium power range. The device requires a DC voltage between 7.4 and 14.8 V, corresponding to a two- or three-cell lithium-polymer or lithium-ion battery. The 5 V BEC output directly powers the radio receiver and small servos, eliminating the need for a separate power supply module for these components.

The ESC's behavior can be controlled via PWM signals from the radio receiver or operated in sensored mode. The latter improves startup behavior at low motor speeds. The permissible continuous current is 20 A, with short-term peaks of up to 30 A possible. This current rating is intended for aircraft models up to approximately medium size with corresponding motor weights.

Typical applications include electric aircraft models weighing between 500 g and 1.5 kg. A lightweight vertical takeoff model operates comfortably with this current capacity, while larger models with multiple motors distribute the ESCs among the available motors.

A brushless-compatible electric motor, a radio control system with receiver, and a suitable power source are required. The lithium batteries must be charged using a suitable charger. The device generates considerable heat during operation; good air circulation around the ESC is important to prevent thermal shutdown.

Safety information

Lithium batteries pose a fire hazard in the event of overcharging, short circuits, or mechanical damage; these power sources require specialized chargers and safe storage. The device is intended exclusively for building aircraft models and for testing and development purposes. Work on or near high-current systems must be carried out by qualified electricians; if you are unsure about installation and wiring, consult a qualified electrician before commissioning.