BLHeli_S firmware supports DShot, Multishot and OneShot digital protocols plus standard PWM
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BLHeli_S 40A ESC (XT60)
The BLHeli_S 40A ESC with XT60 connector is a mid-range single brushless speed controller running the widely used BLHeli_S firmware, which supports modern digital throttle protocols including DShot, Multishot and OneShot alongside traditional PWM.
₹649 + 18% GST
SKU: BOTBIT-ESC-02 · Best for: 350-500mm FPV and freestyle quadcopter builds
Overview
About BLHeli_S 40A ESC (XT60).
The BLHeli_S 40A ESC with XT60 connector is a mid-range single brushless speed controller running the widely used BLHeli_S firmware, which supports modern digital throttle protocols including DShot, Multishot and OneShot alongside traditional PWM. It drives a brushless motor by rapidly switching power MOSFETs to synthesise the three-phase waveform the motor needs, with the firmware handling commutation timing, active braking and smooth throttle ramping for crisp control.
Rated at 40A continuous with short bursts to around 55A and built for 2-4S LiPo input, it arrives fitted with a high-current XT60 input plug for quick, secure battery connection without soldering. A 5V/3A linear BEC supplies onboard electronics, making it a convenient drop-in upgrade over older 30A SimonK boards for slightly larger or higher-thrust builds.
This ESC suits intermediate builders and FPV hobbyists running 350-500mm quadcopters, larger freestyle quads on 4S, and high-thrust trainer or sport planes. The combination of DShot capability, generous 40A headroom and a plug-and-play XT60 lead makes it a practical, vendor-neutral choice for anyone upgrading from analog SimonK to digital BLHeli_S control.
Key features
Why it stands out.
40A continuous with ~55A bursts gives strong headroom for high-thrust 2-4S motors
Pre-fitted XT60 input plug enables fast, secure battery connection with no soldering
Built-in 5V/3A linear BEC powers flight controller, receiver and accessories
Active braking and damped-light response improve throttle precision and motor control
Specifications
Selection facts.
| Firmware | BLHeli_S |
|---|---|
| Continuous Current | 40A |
| Burst Current | ~55A |
| Battery Input | 2-4S LiPo |
| BEC Output | 5V / 3A (linear) |
| Input Connector | XT60 |
| Supported Protocols | DShot, Multishot, OneShot, PWM |
| Protections | Low-voltage, over-heat, signal-loss |
Applications
Where it is used.
- 350-500mm FPV and freestyle quadcopter builds
- 4S high-thrust multirotor propulsion
- Sport and trainer fixed-wing aircraft
- Upgrade path from analog SimonK to digital BLHeli_S
- Camera and payload multirotor platforms
- RC boats and ground vehicles using brushless motors
Buying guide
How to choose.
The 40A rating with XT60 makes this a good step up from 30A boards when your motors pull more current, for example larger 22xx-23xx motors on 4S spinning 5-6 inch props. Always size the ESC above your motor's worst-case current draw so it runs cool; if your build regularly exceeds about 35A continuous per motor, consider a 50-60A unit.
Because it ships with an XT60 input lead, this single ESC is convenient for builds where each motor has its own controller and you want a quick battery hook-up. If you are building a compact stack-based quad, a 4-in-1 ESC may be neater, but discrete ESCs like this are easier to replace individually after a crash.
Confirm firmware fit for your goals. BLHeli_S supports DShot up to DShot600 and most analog protocols, covering nearly all hobby FPV needs. If you specifically require RPM telemetry, bidirectional DShot for RPM filtering, or 6S operation, look at a BLHeli_32 or AM32 ESC instead. For most 2-4S sport and freestyle builds in India, this 40A BLHeli_S is a strong, affordable pick.
FAQ
Common questions.
What battery voltage does this ESC support?
It is built for 2-4S LiPo packs. The included XT60 plug connects directly to most hobby batteries. Do not exceed 4S, as the capacitor and MOSFET voltage ratings are not designed for 5S or 6S and overvoltage can destroy the ESC.
Does BLHeli_S support DShot?
Yes. BLHeli_S supports the popular DShot digital protocols up to DShot600, plus Multishot, OneShot and standard PWM. This gives you precise, jitter-free throttle control and easy configuration through tools like BLHeliSuite, which most modern flight controllers can pass through.
Can I use this on a 6S build?
No. This is a 2-4S ESC. Running it on 6S would exceed its voltage rating and risk failure. If you need 6S, choose a BLHeli_32 or AM32 ESC rated for 3-6S, which uses higher-voltage components designed for that application.
Is the XT60 connector already attached?
Yes, this version comes with an XT60 input plug pre-fitted, so you can connect it to your battery harness without soldering the main power lead. You will still typically need to solder the three motor wires or use bullet connectors depending on your build.
Does it have a BEC to power my electronics?
Yes, it provides a 5V/3A linear BEC suitable for a flight controller, receiver and modest accessories. For high servo loads or a power-hungry gimbal, add a dedicated BEC so the linear regulator does not overheat under sustained current.
How do I know if 40A is enough for my motor?
Check your motor and propeller's peak current draw, usually published in manufacturer thrust tables. Keep the continuous draw comfortably below 40A, ideally under 35A, so the ESC stays cool. If your setup spikes near or above 40A, choose a higher-rated 50A or 60A ESC.
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