RedHobby 50A BLHeli-S BEC ESC - High-Performance 2-4S Brushless Speed Controller With 5V 3A Output for RC Drones and Aeroplanes
The RedHobby 50A BLHeli-S ESC is a compact, high-output brushless electronic speed controller built for RC drones, fixed-wing aeroplanes, and multi-rotor applications. Rated at a continuous 50A with a 60A burst capacity, it handles demanding flight conditions without compromising thermal stability or response accuracy. The 5V 3A BEC output supplies reliable power to onboard receivers and accessories, making it a self-contained power management solution for 2-4S LiPo battery configurations. Its lightweight 40g profile and compact form factor allow straightforward installation across a wide range of frames and airframes.
Running BLHeli-S open-source firmware, this ESC offers exceptional throttle linearity and rapid signal response - critical for acrobatic and high-speed flight. It supports both single-directional and bi-directional motor modes, with bi-directional set as the default for immediate compatibility with modern drone setups. Parameter configuration is handled via BLHeli-S software connected through a USB-to-serial interface, enabling precise tuning of throttle stroke, direction, and protection thresholds from a computer. Built-in protections against low voltage, over-temperature, and signal loss, along with an audible beep warning system, ensure safe and recoverable operation in the field.
Key Features
- Continuous and Burst Current Rating: 50A continuous current with a 60A burst rating for sustained high-power motor drive without thermal runaway
- BEC Output: 5V 3A line BEC output for powering receivers and flight controllers directly from the ESC
- Battery Compatibility: Supports 2S to 4S LiPo battery packs for versatile build configurations
- BLHeli-S Firmware: Original BLHeli-S open-source firmware for excellent throttle linearity, fast start signals, and aggressive motor response
- Bi-directional Mode Support: Selectable single-directional and bi-directional motor control modes; defaults to bi-directional out of the box
- USB-to-Serial Configuration: Compatible with BLHeli-S software via USB-to-serial connection for computer-based parameter tuning
- Multi-Layer Protection: Built-in low-voltage protection, over-temperature protection, and signal-loss protection for safe operation
- Audible Alert System: Emits a beep sequence when throttle is held at minimum position, aiding in locating lost aircraft
- Throttle Stroke Calibration: Adjustable throttle stroke range for compatibility with different receivers and transmitter setups
- Genuine Components: Uses original, high-quality components for reliable current resistance and long-term electrical stability
- Lightweight Build: Weighs only 40g; compact design suited to weight-sensitive builds
- High-Quality Rubber Material: Outer material provides vibration damping and protects internal electronics
Applications
- Racing and freestyle quadcopter builds on 2S-4S power systems
- Fixed-wing RC aeroplane power systems requiring a reliable BEC supply
- Multi-rotor platforms needing bi-directional ESC support for active braking
- DIY and hobbyist drone builds where BLHeli-S parameter tuning is required
- RC toys and educational drone platforms using 2-4S LiPo batteries
