Brushless 40A 2-4S ESC for Drone
The Brushless 40A 2-4S ESC is specifically designed for quadcopters and multi-rotors, providing faster and more efficient motor speed control for enhanced flight performance compared to other ESCs on the market.
This ESC features a multi-integrated special program, rapid throttle response, and outperforms various open-source software options. The firmware is optimized for disc motors, ensuring excellent compatibility with 2-4S LiPo batteries.
It uses twisted wire for the throttle signal line to minimize crosstalk from the copper transmission signal, resulting in a more stable flight experience. This ESC supports throttle signal refresh rates up to 621Hz and is compatible with a variety of flight controllers (note: throttle signals above 500Hz are considered non-standard).
With ultra-low resistance MOSFETs, this ESC offers robust current capacity. The specialized driver integrated circuit enhances performance and stability beyond what discrete component circuits can achieve. Please note that this ESC does not support firmware flashing.
Application:
- BLDC Motors
- Multirotors
- Rc Planes etc.
Note: Image may vary from actual product in terms of outer color and brand design
Features:
- Easy to install
- Easy to use
- Best performance
- Use for F450 450mm S500 ZD550 RC Helicopter Quadcopter.
- Highly intelligen
- Adaptive ability
- Extremely easy to use
Specifications:
| Model | Brushless 40A |
| Burst Current (A) | 60 |
| Constant Current (A) | 40 |
| BEC | Yes (5V/3A) |
| Suitable Lipo Batteries | 2 ~ 4S |
| Color | Black/Yellow |
| Dimensions (mm) | LxWxH7 x 3 |
| Weight | 34 |
Package Includes:
1 x Brushless 40A 2-4S ESC
Brushless 40A 2-4S ESC for Drone Overview
The Brushless 40A 2-4S ESC for Drone is a high-performance electronic speed controller specifically built for quadcopters, multi-rotors and RC helicopters. With OPTO isolation, integrated BEC and optimized firmware for disc motors, it delivers rapid throttle response and stable control when powered by 2–4S LiPo batteries.
Key Features of Brushless 40A 2-4S ESC for Drone
- 40A continuous current rating with OPTO design for low interference
- Compatible with 2-4S LiPo battery packs
- Onboard 5V 3A BEC output to power flight controllers and peripherals
- Firmware optimized for disc-style brushless motors, ensuring smooth performance
- Twisted throttle signal wire minimizes crosstalk for stable flight
- Rapid throttle response via multi-integrated special program
Applications and Use Cases
- Powering F450 450mm quadcopter frames for aerial photography
- Equipping S500 and ZD550 multi-rotor builds with reliable speed control
- Upgrading stock ESCs on RC helicopters running 2-4S LiPo systems
- Custom racing drones requiring quick throttle response
- DIY surveying or mapping drones needing stable motor management
How to Use Brushless 40A 2-4S ESC for Drone
Mount the ESC securely on your drone frame, solder the three motor phase wires and battery leads, then plug the twisted throttle signal cable into your flight controller’s receiver output. Power on the system, follow your flight controller’s ESC calibration procedure for throttle range, and verify motor rotation before your first flight.
Frequently Asked Questions
What battery voltage range does this ESC support?
This ESC is designed to work with 2-4S LiPo battery packs, providing flexibility for a variety of drone builds.
Can I power my flight controller from the ESC’s BEC?
Yes. The onboard 5V 3A BEC output can reliably power most flight controllers, receivers and small accessories.
Is the firmware compatible with disc-style brushless motors?
Absolutely. The ESC’s firmware is optimized for disc motors, delivering smooth acceleration and precise speed control.

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