Looking for 20a Esc? Readytosky 20A 2-4S Mini BLHeli-S OPTO ESC for FPV Race RC Helicopter is available at Zbotic with fast shipping across India.
The Readytosky 20A 2-4S Mini BLHeli-S OPTO ESC is designed for FPV race RC helicopters, offering high functionality and performance. It operates at a maximum frequency of 50MHz and includes built-in automatic temperature protection. This ESC is compatible with 2-4S LiPo batteries.
Supporting BLHeli-S firmware, it allows for easy online firmware and parameter upgrades, and includes all BLHeli_S functions. Additionally, it can be programmed for throttle setup and supports both two-way mode and FPV 3D mode.
Applications:
Vehicles & Remote Control Toys
Features:
- Firmware: Blheli_S
- Wide Compatibility
- Lipo:2-4s
- Support the newest protocol of Dshot150/300/600
- Support PWM, Oneshot125, Oneshot42
- smaller size, lighter weight, and easy to build
- Stable performance
- support two-way mode and FPV 3D mode
- Built-in automatic protection of temperature sensor
specification-
| Model | 20A BLHeli-S OPTO ESC |
|---|---|
| Suitable Lipo Batteries | 2 ~ 4S |
| Board size | 27*12mm |
| Continuous current | 20A |
| Peak Current(10s) | 25A |
| Dimensions (mm) LxWxH | 27*12*5 |
| Weight (gm) | 8 |
| Shipping Weight | 0.012 kg |
| Shipping Dimensions | 4 × 2 × 1 cm |
Package Includes:
Readytosky 20A 2-4S Mini BLHeli-S OPTO ESC for FPV Race RC Overview
The Readytosky 20A 2-4S Mini BLHeli-S OPTO ESC is a compact electronic speed controller designed specifically for FPV race RC helicopters. It regulates motor speed, offers rapid throttle response and supports both two-way and 3D flight modes for aerobatic maneuvers.
Key Features of Readytosky 20A 2-4S Mini BLHeli-S OPTO ESC for FPV Race RC
- Continuous current rating of 20A with a 10-second peak current of 25A for high-power demands
- BLHeli-S firmware compatibility enabling online parameter tuning and firmware updates
- Wide input range supporting 2S to 4S LiPo battery packs
- Built-in automatic temperature protection to prevent overheating during intense flights
- Maximum switching frequency of 50MHz for smooth throttle transitions
- Supports two-way mode and FPV 3D mode for agile aerobatics
- Fast shipping across India when ordered from Zbotic
Applications and Use Cases
- High-speed FPV race RC helicopters requiring precise motor control
- Lightweight micro quadcopters for indoor and outdoor freestyle flying
- 3D aerobatic RC helicopter builds with bi-directional thrust capabilities
- Custom multi-rotor prototypes where size and weight are critical
- RC drone testers and hobbyists upgrading from brushed to brushless systems
How to Use Readytosky 20A 2-4S Mini BLHeli-S OPTO ESC for FPV Race RC
Mount the ESC securely on your helicopter frame, solder the motor leads and connect the 2–4S LiPo battery harness. Plug the signal lead into your flight controller or receiver, then power up and enter BLHeliSuite to calibrate throttle endpoints, select programming options and enable desired modes such as two-way or 3D flight. Always perform a motor spin check before your first flight.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
Which battery voltages does this ESC support?
The Readytosky 20A OPTO ESC is compatible with 2S, 3S, and 4S LiPo battery packs, allowing you to choose based on your desired power and flight time.
Can I update the firmware on this ESC?
Yes, the ESC runs BLHeli-S firmware and can be upgraded or reconfigured via the BLHeliSuite software over an external programmer or through a supported flight controller interface.
How do I enable 3D flight mode?
Within BLHeliSuite, select the two-way or “bidirectional” enabled option for your ESC, then configure endpoints in your transmitter to assign a switch for toggling between standard and 3D modes.
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Read More →Technical Specifications
| Brand | Readytosky |
|---|---|
| Current Rating | 20A |
| Cell Configuration | 4S |
| SKU | AI4648 |
| Weight | 0.01 kg |
| Availability | In Stock |
Applications & Use Cases
The Readytosky 20A 2-4S Mini BLHeli-S OPTO ESC for FPV Race RC Helicopter is a versatile (esc) drone speed controller used across a wide range of applications including brushless motor speed control, FPV drone builds, multirotor platforms, and RC aircraft.
Common use cases:
- Controlling motor speed in a quadcopter
- Replacing a burnt ESC after a short
- Upgrading to BLHeli_32 for smoother throttle response
This product is ideal for drone builders and RC enthusiasts.
Technical Tip: Choose ESC amperage 20% above your motor's max draw. DShot600 protocol recommended for modern builds.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
- Genuine Readytosky product sourced from authorized channels
Prateek Mittal (verified owner) –
Nice Readytosky 20A 2-4S Mini BLHeli-S OPTO, does the job. Delivery took a couple of extra days but product is solid.
Ravi Gupta (verified owner) –
Superb Readytosky 20A 2-4S Mini BLHeli-S OPTO! Built my first drone with this and it performed beyond expectations.
Jai Mittal (verified owner) –
This Readytosky 20A 2-4S Mini BLHeli-S OPTO exceeded my expectations. Installed it yesterday and took a successful test flight today.
Chetan Vohra (verified owner) –
Nice Readytosky 20A 2-4S Mini BLHeli-S OPTO, does the job. Delivery took a couple of extra days but product is solid.
Varun Naidu –
Very impressed with this Readytosky 20A 2-4S Mini BLHeli-S OPTO. My drone’s performance improved noticeably.
Vijay Rawat (verified owner) –
Received the Readytosky 20A 2-4S Mini BLHeli-S OPTO in great condition. Testing done, everything works perfectly.
Kritika Vyas (verified owner) –
Decent Readytosky 20A 2-4S Mini BLHeli-S OPTO. Took some effort to set up but working now.
Pallavi Bhat (verified owner) –
Been using this Readytosky 20A 2-4S Mini BLHeli-S OPTO for 3 months now, zero issues. Great product.
Simran Verma (verified owner) –
Nice Readytosky 20A 2-4S Mini BLHeli-S OPTO, does the job. Delivery took a couple of extra days but product is solid.
Bharat Joshi (verified owner) –
Excellent product for the price. My drone flies smoothly with this Readytosky 20A 2-4S Mini BLHeli-S OPTO. Highly recommended!
Paras Batra (verified owner) –
Bought this for my college drone project. Works great, professor was impressed!
Uday Naidu –
Superb Readytosky 20A 2-4S Mini BLHeli-S OPTO! Built my first drone with this and it performed beyond expectations.
Kunal Saini (verified owner) –
Very impressed with this Readytosky 20A 2-4S Mini BLHeli-S OPTO. My drone’s performance improved noticeably.
Sakshi Negi (verified owner) –
Good quality Readytosky 20A 2-4S Mini BLHeli-S OPTO. Minor scratches on arrival but functionally perfect.
Sakshi Hegde (verified owner) –
Very good quality Readytosky 20A 2-4S Mini BLHeli-S OPTO. I’ve been building drones for 2 years now and this is one of the best I’ve used.
Anushka Khanna (verified owner) –
Excellent product for the price. My drone flies smoothly with this Readytosky 20A 2-4S Mini BLHeli-S OPTO. Highly recommended!
Zubin Sen (verified owner) –
Great Readytosky 20A 2-4S Mini BLHeli-S OPTO for beginners and professionals alike. Highly recommended for drone enthusiasts.
Farhan Bose –
Good quality Readytosky 20A 2-4S Mini BLHeli-S OPTO. Minor scratches on arrival but functionally perfect.
Arjun Agarwal –
Nice Readytosky 20A 2-4S Mini BLHeli-S OPTO, does the job. Delivery took a couple of extra days but product is solid.
Karan Trivedi –
Superb Readytosky 20A 2-4S Mini BLHeli-S OPTO! Built my first drone with this and it performed beyond expectations.
Diya Chatterjee (verified owner) –
Great quality Readytosky 20A 2-4S Mini BLHeli-S OPTO. Perfect specs for my drone project. Fast delivery too!
Lakshmi Batra (verified owner) –
Good Readytosky 20A 2-4S Mini BLHeli-S OPTO. Works well for my drone build. Packaging could be slightly better.
Anand Krishnan –
This Readytosky 20A 2-4S Mini BLHeli-S OPTO is exactly what I needed for my drone. Works perfectly, very reliable.
Aanya Chauhan (verified owner) –
Outstanding Readytosky 20A 2-4S Mini BLHeli-S OPTO! Installed it on my racing quad and the performance is amazing.
Deepak Rajan (verified owner) –
Excellent Readytosky 20A 2-4S Mini BLHeli-S OPTO! Perfect for my quadcopter build. Arrived well packed and works flawlessly.
Sandhya Pillai (verified owner) –
Perfect for my agriculture drone project. This Readytosky 20A 2-4S Mini BLHeli-S OPTO handles the weight effortlessly.
Girish Desai (verified owner) –
Received the Readytosky 20A 2-4S Mini BLHeli-S OPTO in great condition. Testing done, everything works perfectly.
Harsh Singh –
Solid Readytosky 20A 2-4S Mini BLHeli-S OPTO. Not the absolute best but excellent value for the price point.