--- product_id: 546942384 title: "Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller | For F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS)" brand: "readytosky" price: "Β₯15252" currency: JPY in_stock: true reviews_count: 4 url: https://www.desertcart.jp/products/546942384-readytosky-40a-esc-opto-2-6s-brushless-esc-electronic-speed store_origin: JP region: Japan --- # 40A continuous current power Supports 2-6S LiPo battery range Highly intelligent adaptive firmware Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller | For F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS) **Brand:** readytosky **Price:** Β₯15252 **Availability:** βœ… In Stock ## Summary > 🚁 Elevate your drone game with intelligent power and precision control! ## Quick Answers - **What is this?** Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller | For F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS) by readytosky - **How much does it cost?** Β₯15252 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/546942384-readytosky-40a-esc-opto-2-6s-brushless-esc-electronic-speed) ## Best For - readytosky enthusiasts ## Why This Product - Trusted readytosky brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Lightweight & Compact:** At just 33.2g, it’s engineered for high efficiency without adding bulk - β€’ **Signal Integrity Boost:** Twisted pair copper throttle line minimizes crosstalk for precise responsiveness - β€’ **Smart Adaptive Firmware:** Optimized ESC firmware ensures flawless compatibility and smooth control - β€’ **Power-Packed Performance:** Delivers a robust 40A continuous current for peak flight power - β€’ **Wide Battery Compatibility:** Seamlessly supports 2-6S LiPo batteries for versatile setups ## Overview The Readytosky 40A OPTO Brushless ESC is a lightweight, high-performance electronic speed controller designed for 2-6S LiPo batteries. Featuring optimized firmware for excellent compatibility with popular RC quadcopters like the F450 and F550, it offers intelligent adaptive control and reduced signal interference for smooth, reliable flight performance. ## Description 1, Specifically optimized firmware ESC, the ESC has a very good compatibility; 2, Highly intelligent, adaptive ability, extremely easy to use; 3, Throttle signal line is a twisted pair, copper wire to reduce crosstalk signal generated 4, For F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter ## Features - 40A OPTO 2-6S Brushless electronic speed controller. - Highly intelligent, adaptive ability, extremely easy to use - Continuous Current: 40A Weight: 33.2g - Specifically optimized firmware ESC, the ESC has a very good compatibility - For F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0CCVR6WS9 | | Best Sellers Rank | #126,108 in Toys & Games (See Top 100 in Toys & Games) #59 in Radio Control Vehicle Speed Controls | | Customer Reviews | 3.8 3.8 out of 5 stars (8) 3.8 out of 5 stars | | Item Weight | 4.6 ounces | | Manufacturer | Readytosky | | Manufacturer Recommended Age | 18 months - 3 years | | Product Dimensions | 4.5 x 3.5 x 0.78 inches | ## Images ![Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller | For F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS) - Image 1](https://m.media-amazon.com/images/I/811apaZSCDL.jpg) ![Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller | For F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS) - Image 2](https://m.media-amazon.com/images/I/71W0Il2EGML.jpg) ![Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller | For F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS) - Image 3](https://m.media-amazon.com/images/I/61Hl471DaJL.jpg) ![Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller | For F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS) - Image 4](https://m.media-amazon.com/images/I/716dyX4PReL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great value, top quality! *by on Reviewed in the United States April 21, 2026* Great product! I put them to use in a heavy lift drone and they have exceeded my expectations! Stay cool, easy to use, and can handle the power needed for my multicopter easily! Will buy more soon! ### ⭐⭐⭐⭐⭐ Good value *by on Reviewed in the United States April 25, 2025* This is a solid ESC. No BEC and not sure if the firmware can be changed or updated but it's a good performing reliable ESC ### ⭐⭐ Did not work for my setup. *by on Reviewed in the United States July 23, 2026* Did not work with 6s battery, 320kv motors, and orange cube+ flight controller. ## Frequently Bought Together - Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller for F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS) - Readytosky 2212 920KV Brushless Motors CW CCW for F330 F450 F550 S500 S550 X525 DJI Phantom Quadcopter(4PCS) - Readytosky 6Pairs 1045 Propellers CW CCW 10x4.5" FPV Props for F550 F450 S500 S550 FPV Quadcopter Multirotor --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/546942384-readytosky-40a-esc-opto-2-6s-brushless-esc-electronic-speed](https://www.desertcart.jp/products/546942384-readytosky-40a-esc-opto-2-6s-brushless-esc-electronic-speed) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-14*