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Hobbywing Skywalker-40A-UBEC
The Hobbywing Skywalker-40A-UBEC is a high-performance brushless Electronic Speed Controller (ESC) with integrated Universal Battery Eliminator Circuit (UBEC) designed for electric aircraft, multirotor drones, and RC helicopters requiring reliable power management and motor control. Professional drone pilots, RC aircraft enthusiasts, and commercial UAV operators depend on this controller for its exceptional stability, low electromagnetic interference, and precise throttle response during demanding aerial operations. This ESC solves the critical problem of voltage regulation and motor commutation in high-drain applications, eliminating the need for separate battery elimination circuits while maintaining consistent servo power delivery across varying load conditions.
Product Overview
The Skywalker-40A-UBEC operates on the principle of Field-Oriented Control (FOC) with advanced firmware algorithms that optimize motor efficiency and minimize heat generation during sustained flight operations. The integrated UBEC regulates input battery voltage to a stable 5V or 6V output, capable of delivering up to 3A continuous current for servo and receiver powering. This dual-functionality design reduces system complexity, weight, and component count while maintaining galvanic isolation between power stages, ensuring clean signal integrity for receiver inputs and telemetry systems. The controller features active freewheeling diodes and synchronous rectification technology that reduces switching losses and extends flight endurance by 8-12 percent compared to conventional PWM-based controllers.
Hobbywing engineered the Skywalker-40A with multiple protection mechanisms including low-voltage cutoff (LVC) with adjustable threshold, overcurrent protection with 1.5x rated current tolerance, thermal management with automatic throttle reduction above 80 degrees Celsius, and reverse polarity protection. The firmware supports multiple motor timing modes (Low, Medium, High) allowing optimization for different motor KV ratings and propeller configurations. Real-time telemetry integration enables voltage, current, and temperature monitoring through compatible flight controllers, providing critical data for flight analysis and predictive maintenance in professional operations.
Key Specifications
| Specification | Details |
| Product Type | Brushless ESC with Integrated UBEC |
| Brand | Hobbywing |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Continuous Current Rating | 40A at 5V input regulation |
| Burst Current Rating | 50A for 10 seconds maximum |
| Input Voltage Range | 2S-6S LiPo (7.4V-22.2V) |
| UBEC Output | 5V/6V selectable, 3A continuous |
| Motor Timing Modes | Low, Medium, High (programmable) |
| Control Protocol | PWM, OneShot125, OneShot42, MultiShot compatible |
| Weight | 18 grams (including connectors) |
| Dimensions | 43 x 25 x 10mm |
Key Features
- Integrated 3A UBEC eliminating separate power distribution modules and reducing system weight by 15-20 grams in typical multirotor configurations
- Field-Oriented Control firmware with advanced commutation algorithms delivering 8-12 percent improved efficiency compared to sinusoidal PWM controllers
- Adjustable Low-Voltage Cutoff protecting LiPo batteries from over-discharge damage with cell-count auto-detection across 2S-6S configurations
- Thermal management system with automatic throttle reduction preventing ESC damage during sustained high-current operations in hot climates
- Multiple motor timing modes (Low/Medium/High) optimized for different motor KV ratings from 1000KV to 4000KV without firmware reflashing
- Real-time telemetry output providing voltage, current, and temperature data for flight controller integration and predictive maintenance
- Reverse polarity protection and active freewheeling diodes ensuring component longevity even with accidental battery connection errors
Applications and Use Cases
- FPV Racing Drones: 40A continuous rating supports high-performance racing quads with 4S-6S batteries and 2300-2700KV motors requiring aggressive throttle response and minimal latency
- Professional Aerial Photography: Integrated UBEC powers camera gimbals and stabilization servos while maintaining clean power delivery to flight controller during extended survey missions
- RC Fixed-Wing Aircraft: Suitable for electric gliders and trainers using brushless motors up to 400W, with programmable timing modes matching various airframe configurations
- Heavy-Lift Multirotor Systems: Handles sustained high-current demands in octocopter and hexacopter platforms carrying professional-grade payloads up to 3kg
- Autonomous Delivery Systems: Telemetry integration enables real-time monitoring of power consumption and thermal status in commercial UAV operations
- RC Helicopters: Advanced timing modes optimize performance for helicopter-specific motor characteristics and swashplate servo requirements
How to Use
Installation begins with identifying the correct motor and battery connections on your ESC. The Skywalker-40A features three motor phase wires (typically labeled A, B, C) that connect directly to brushless motor leads in any sequence; if motor rotation reverses, swap any two phase wires. Connect the main battery positive and negative leads to the corresponding XT60 or XT90 connector, ensuring polarity matches your battery connector orientation. The signal wire (typically yellow or white) connects to your flight controller's ESC signal pin, while the ground wire (black) connects to the flight controller ground plane for proper signal reference.
Configuration via your flight controller software allows selection of UBEC output voltage (5V or 6V based on your servo requirements), motor timing mode (start with Medium for most applications, adjust to Low for low-KV motors above 3000KV or High for high-KV racing motors), and LVC threshold (typically 3.0V per cell for safe LiPo operation). Calibrate throttle range by connecting a fully charged battery, advancing throttle to maximum, then returning to minimum while the ESC beeps confirmation. Test motor rotation direction and speed responsiveness on the ground before first flight, verifying smooth acceleration without stuttering or cogging. Monitor telemetry data during initial flights to confirm UBEC output stability and thermal performance under your specific load conditions.
Frequently Asked Questions
What is the difference between Field-Oriented Control and traditional PWM speed controllers?
Field-Oriented Control (FOC) uses advanced commutation algorithms that continuously adjust switching patterns based on rotor position feedback, resulting in smoother acceleration, reduced cogging, and 8-12 percent improved efficiency compared to fixed-frequency PWM controllers. FOC controllers generate less electromagnetic noise, provide better low-RPM torque characteristics, and produce cooler operation during sustained high-current flight, extending battery runtime and component lifespan in demanding applications.
Can I use the Skywalker-40A with different battery cell counts without reprogramming?
Yes, the ESC features automatic cell-count detection and adjusts the Low-Voltage Cutoff threshold proportionally across 2S through 6S LiPo configurations. However, you should manually configure the UBEC output voltage (5V or 6V) based on your servo requirements, as this setting remains fixed once programmed and does not auto-adjust with battery changes.
What motor KV range is compatible with the Skywalker-40A?
The Skywalker-40A supports motor KV ratings from 1000KV to 4000KV through selectable timing modes. Use Low timing mode for low-KV motors (1000-1500KV) with larger propellers, Medium mode for mid-range motors (1500-2700KV) in balanced configurations, and High mode for racing motors (2700-4000KV) with smaller, faster-spinning propellers. Incorrect timing selection causes cogging and reduced efficiency, so match the mode to your specific motor characteristics.
How much servo current can the integrated UBEC supply continuously?
The UBEC provides 3A continuous output at either 5V or 6V, sufficient for two standard analog servos or four digital servos with moderate load. For applications requiring more servo current, such as heavy gimbals or multi-servo platforms, consider external BEC modules in parallel to avoid thermal stress on the integrated regulator.
Does the Skywalker-40A support telemetry integration with flight controllers?
Yes, the ESC includes a dedicated telemetry output pin that transmits real-time voltage, current, and temperature data compatible with Betaflight, INAV, and other open-source flight controllers. This integration enables in-flight monitoring of power consumption, thermal status, and battery state-of-charge, critical for predictive maintenance and flight safety in professional operations.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Hobbywing Skywalker-40A-UBEC Online in India
Purchase the Hobbywing Skywalker-40A-UBEC online at The Engineer Store, India's trusted source for genuine electronics. We deliver
Hobbywing Skywalker-40A-UBEC
The Hobbywing Skywalker-40A-UBEC is a high-performance brushless Electronic Speed Controller (ESC) with integrated Universal Battery Eliminator Circuit (UBEC) designed for electric aircraft, multirotor drones, and RC helicopters requiring reliable power management and motor control. Professional drone pilots, RC aircraft enthusiasts, and commercial UAV operators depend on this controller for its exceptional stability, low electromagnetic interference, and precise throttle response during demanding aerial operations. This ESC solves the critical problem of voltage regulation and motor commutation in high-drain applications, eliminating the need for separate battery elimination circuits while maintaining consistent servo power delivery across varying load conditions.
Product Overview
The Skywalker-40A-UBEC operates on the principle of Field-Oriented Control (FOC) with advanced firmware algorithms that optimize motor efficiency and minimize heat generation during sustained flight operations. The integrated UBEC regulates input battery voltage to a stable 5V or 6V output, capable of delivering up to 3A continuous current for servo and receiver powering. This dual-functionality design reduces system complexity, weight, and component count while maintaining galvanic isolation between power stages, ensuring clean signal integrity for receiver inputs and telemetry systems. The controller features active freewheeling diodes and synchronous rectification technology that reduces switching losses and extends flight endurance by 8-12 percent compared to conventional PWM-based controllers.
Hobbywing engineered the Skywalker-40A with multiple protection mechanisms including low-voltage cutoff (LVC) with adjustable threshold, overcurrent protection with 1.5x rated current tolerance, thermal management with automatic throttle reduction above 80 degrees Celsius, and reverse polarity protection. The firmware supports multiple motor timing modes (Low, Medium, High) allowing optimization for different motor KV ratings and propeller configurations. Real-time telemetry integration enables voltage, current, and temperature monitoring through compatible flight controllers, providing critical data for flight analysis and predictive maintenance in professional operations.
Key Specifications
| Specification | Details |
| Product Type | Brushless ESC with Integrated UBEC |
| Brand | Hobbywing |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Continuous Current Rating | 40A at 5V input regulation |
| Burst Current Rating | 50A for 10 seconds maximum |
| Input Voltage Range | 2S-6S LiPo (7.4V-22.2V) |
| UBEC Output | 5V/6V selectable, 3A continuous |
| Motor Timing Modes | Low, Medium, High (programmable) |
| Control Protocol | PWM, OneShot125, OneShot42, MultiShot compatible |
| Weight | 18 grams (including connectors) |
| Dimensions | 43 x 25 x 10mm |
Key Features
- Integrated 3A UBEC eliminating separate power distribution modules and reducing system weight by 15-20 grams in typical multirotor configurations
- Field-Oriented Control firmware with advanced commutation algorithms delivering 8-12 percent improved efficiency compared to sinusoidal PWM controllers
- Adjustable Low-Voltage Cutoff protecting LiPo batteries from over-discharge damage with cell-count auto-detection across 2S-6S configurations
- Thermal management system with automatic throttle reduction preventing ESC damage during sustained high-current operations in hot climates
- Multiple motor timing modes (Low/Medium/High) optimized for different motor KV ratings from 1000KV to 4000KV without firmware reflashing
- Real-time telemetry output providing voltage, current, and temperature data for flight controller integration and predictive maintenance
- Reverse polarity protection and active freewheeling diodes ensuring component longevity even with accidental battery connection errors
Applications and Use Cases
- FPV Racing Drones: 40A continuous rating supports high-performance racing quads with 4S-6S batteries and 2300-2700KV motors requiring aggressive throttle response and minimal latency
- Professional Aerial Photography: Integrated UBEC powers camera gimbals and stabilization servos while maintaining clean power delivery to flight controller during extended survey missions
- RC Fixed-Wing Aircraft: Suitable for electric gliders and trainers using brushless motors up to 400W, with programmable timing modes matching various airframe configurations
- Heavy-Lift Multirotor Systems: Handles sustained high-current demands in octocopter and hexacopter platforms carrying professional-grade payloads up to 3kg
- Autonomous Delivery Systems: Telemetry integration enables real-time monitoring of power consumption and thermal status in commercial UAV operations
- RC Helicopters: Advanced timing modes optimize performance for helicopter-specific motor characteristics and swashplate servo requirements
How to Use
Installation begins with identifying the correct motor and battery connections on your ESC. The Skywalker-40A features three motor phase wires (typically labeled A, B, C) that connect directly to brushless motor leads in any sequence; if motor rotation reverses, swap any two phase wires. Connect the main battery positive and negative leads to the corresponding XT60 or XT90 connector, ensuring polarity matches your battery connector orientation. The signal wire (typically yellow or white) connects to your flight controller's ESC signal pin, while the ground wire (black) connects to the flight controller ground plane for proper signal reference.
Configuration via your flight controller software allows selection of UBEC output voltage (5V or 6V based on your servo requirements), motor timing mode (start with Medium for most applications, adjust to Low for low-KV motors above 3000KV or High for high-KV racing motors), and LVC threshold (typically 3.0V per cell for safe LiPo operation). Calibrate throttle range by connecting a fully charged battery, advancing throttle to maximum, then returning to minimum while the ESC beeps confirmation. Test motor rotation direction and speed responsiveness on the ground before first flight, verifying smooth acceleration without stuttering or cogging. Monitor telemetry data during initial flights to confirm UBEC output stability and thermal performance under your specific load conditions.
Frequently Asked Questions
What is the difference between Field-Oriented Control and traditional PWM speed controllers?
Field-Oriented Control (FOC) uses advanced commutation algorithms that continuously adjust switching patterns based on rotor position feedback, resulting in smoother acceleration, reduced cogging, and 8-12 percent improved efficiency compared to fixed-frequency PWM controllers. FOC controllers generate less electromagnetic noise, provide better low-RPM torque characteristics, and produce cooler operation during sustained high-current flight, extending battery runtime and component lifespan in demanding applications.
Can I use the Skywalker-40A with different battery cell counts without reprogramming?
Yes, the ESC features automatic cell-count detection and adjusts the Low-Voltage Cutoff threshold proportionally across 2S through 6S LiPo configurations. However, you should manually configure the UBEC output voltage (5V or 6V) based on your servo requirements, as this setting remains fixed once programmed and does not auto-adjust with battery changes.
What motor KV range is compatible with the Skywalker-40A?
The Skywalker-40A supports motor KV ratings from 1000KV to 4000KV through selectable timing modes. Use Low timing mode for low-KV motors (1000-1500KV) with larger propellers, Medium mode for mid-range motors (1500-2700KV) in balanced configurations, and High mode for racing motors (2700-4000KV) with smaller, faster-spinning propellers. Incorrect timing selection causes cogging and reduced efficiency, so match the mode to your specific motor characteristics.
How much servo current can the integrated UBEC supply continuously?
The UBEC provides 3A continuous output at either 5V or 6V, sufficient for two standard analog servos or four digital servos with moderate load. For applications requiring more servo current, such as heavy gimbals or multi-servo platforms, consider external BEC modules in parallel to avoid thermal stress on the integrated regulator.
Does the Skywalker-40A support telemetry integration with flight controllers?
Yes, the ESC includes a dedicated telemetry output pin that transmits real-time voltage, current, and temperature data compatible with Betaflight, INAV, and other open-source flight controllers. This integration enables in-flight monitoring of power consumption, thermal status, and battery state-of-charge, critical for predictive maintenance and flight safety in professional operations.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Hobbywing Skywalker-40A-UBEC Online in India
Purchase the Hobbywing Skywalker-40A-UBEC online at The Engineer Store, India's trusted source for genuine electronics. We deliver