RedHobby 50A Water-Cooled Bidirectional ESC with 5V/3A BEC for 2-4S LiPo RC Boats and Underwater Thrusters
The RedHobby 50A water-cooled bidirectional ESC is a high-performance speed controller purpose-built for RC boats, submersibles, and underwater thrusters that demand reliable, responsive motor control. Rated at 50A continuous and 60A burst, it handles demanding loads without thermal throttling, thanks to an integrated water-cooling interface that channels heat away from the unit during sustained runs. The built-in 5V/3A line BEC supplies clean, stable power to receivers and servos, eliminating the need for a separate power regulator. Compatible with 2-4S LiPo battery packs, this unit supports a wide voltage range suited to both entry-level and performance-oriented RC boat builds.
Manufactured using original, genuine components, this ESC is engineered for longevity and consistent electrical performance across repeated use cycles. The BLheli-S firmware platform enables bidirectional operation as the factory default, allowing forward and reverse motor control without additional hardware changes. Throttle stroke calibration is supported for compatibility with a broad range of receivers, giving operators a smooth, precise speed-control feel. Multiple built-in protection functions, including low-voltage cut-off, over-temperature shutdown, and signal-loss protection, safeguard both the ESC and connected motor during operation. A beep-based warning system alerts the user when the throttle remains at the lowest position for an extended period, aiding in equipment recovery.
Key Features
Bidirectional Motor Control: Factory default set to bidirectional mode via BLheli-S firmware, supporting forward and reverse without additional wiring changes. Direction selection is configurable through programming parameters.
Water-Cooled Thermal Management: Integrated cooling-fin interface circulates water to dissipate heat effectively during high-load or continuous-run conditions, preventing over-temperature shutdown on extended runs.
Continuous and Burst Current Rating: Rated at 50A continuous current and 60A burst current, suitable for high-torque brushless motors used in RC boats and underwater thrusters.
Built-In Line BEC: Provides a stable 5V/3A output to power receivers and peripherals, removing the need for a standalone BEC or external regulator in the power circuit.
Wide Voltage Compatibility: Supports 2-4S LiPo battery packs, accommodating a broad range of hull configurations and motor setups in the RC boat category.
Multiple Protection Functions: Includes low-voltage protection, over-temperature protection, and signal-loss protection to safeguard the ESC and drivetrain during operation.
Throttle Stroke Calibration: Adjustable throttle stroke ensures compatibility with different receivers and transmitter brands, delivering a smooth and responsive speed-control feel.
Warning Beep System: Emits an audible beep when the throttle is held at the lowest position for a set duration, assisting in locating and retrieving equipment in the field.
Compact and Lightweight Build: Weighs 51g with a compact form factor that fits easily into tight boat hulls and submersible enclosures.
Genuine Component Construction: Built using original, verified components to ensure high electrical resistance tolerance and consistent regulation quality over time.
Applications
- RC racing and sport boats requiring forward-reverse motor control
- Submersible RC models with underwater thrusters
- DIY RC boat builds using 2-4S LiPo battery packs
- Robotics and underwater ROV platforms requiring a compact bidirectional ESC
- Hobbyist and semi-professional RC watercraft with brushless drive systems
