--- product_id: 368023282 title: "40A ESC 2-4S Brushless ESC Speed Controller 5V/3A BEC for F450 450mm S500 ZD550" brand: "readytosky" price: "€ 81.10" currency: EUR in_stock: true reviews_count: 8 category: "Readytosky" url: https://www.desertcart.at/products/368023282-40a-esc-2-4s-brushless-esc-speed-controller-5v-3a store_origin: AT region: Austria --- # 40A continuous current rating Supports 2-4S LiPo battery cells 5V/3A BEC output for stable power 40A ESC 2-4S Brushless ESC Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 **Brand:** readytosky **Price:** € 81.10 **Availability:** ✅ In Stock ## Summary > 🚁 Elevate your drone game with power and precision that won’t quit! ## Quick Answers - **What is this?** 40A ESC 2-4S Brushless ESC Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 by readytosky - **How much does it cost?** € 81.10 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/368023282-40a-esc-2-4s-brushless-esc-speed-controller-5v-3a) ## 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 - • **Stable Flight Control:** 5V/3A BEC output ensures your flight controller and sensors get rock-solid, uninterrupted power. - • **Plug & Play Simplicity:** Highly intelligent and adaptive design means no complicated setup—just install and take off. - • **Built to Last & Perform:** Premium capacitors stabilize current flow, preventing ESC burnout during those critical full-throttle moments. - • **Power Through the Skies:** 40A high-current ESC delivers reliable thrust for 14-16 inch blades, perfect for aggressive flying. - • **Versatile Battery Compatibility:** Works seamlessly with 2-4S LiPo batteries, giving you flexible power options for your drone setup. ## Overview The Readytosky 2-4S 40A Brushless ESC is a compact, high-performance electronic speed controller designed for 2-4S LiPo-powered drones and helicopters. Featuring a robust 40A continuous current rating and a 5V/3A BEC output, it delivers stable power to flight controllers and sensors. Its plug-and-play design and premium capacitors ensure reliable, smooth throttle response and durability during intense flying sessions. ## Description Buy Readytosky 2-4S 40A Brushless ESC Electronic Speed Controller 5V/3A BEC | For F450 450mm S500 ZD550 RC Helicopter Quadcopter(4PCS): Electric Speed Controllers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Very good quality - These readdytosky esc are just perfect for a drone with a 14 to 16 inch blade. There light weight for a 40a esc and work really well with high current motor you can have them give a boost amprig of 50a for to attest 10 second which is relly helpful when you have to going full throttle before you crash with out blowing of your esc. but what I really like Is the 2 capacitor that (look great quality also) they give a very stable current to power your othe drone parts like flightcontroller becouse it so stable you shouldn't have any problems with the sensor on the drone. there definitely a great price for the quality Review: High quality esc's - If I knew how easy it is to assemble my own quad, I would have started ages ago. These high quality esc's can't be beat. Just plug and go! Stay in the sky longer with these reliable esc's ## Features - ★40A 2-4S Brushless ESC,BEC output: 5V 3A . - ★The applicable number of battery cells :2-4S. - ★Use for F450 450mm S500 ZD550 RC Helicopter Quadcopter. - ★Highly intelligent, adaptive ability, extremely easy to use. - ★★★Note: This ESC is not able to flash the firmware. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09G5S9YYG | | Additional Features | Portable | | Age Range Description | Baby | | Battery Description | Lithium-Ion Polymer | | Best Sellers Rank | #270,936 in Toys & Games ( See Top 100 in Toys & Games ) #333 in Radio Control Vehicle Speed Controls | | Brand Name | Readytosky | | Color | Black | | Customer Reviews | 3.9 out of 5 stars 60 Reviews | | Included Components | [4 x 40A ESCs] | | Manufacturer | Readytosky | | Manufacturer Maximum Age (MONTHS) | 12 | | Manufacturer Part Number | M15-4 | | Material Type | Plastic | | Model Name | M15-4 | | Model Number | M15-4 | | Number of Items | 4 | | Number of Packs | 4 | | Operation Mode | manual | | Power Source | Battery Powered | | Set Name | 4pcs*40A ESC | | Size | 7.2cm x 2.4cm | | Theme | helicopter | | Toy Vehicle Form | Helicopter | ## Images ![40A ESC 2-4S Brushless ESC Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 - Image 1](https://m.media-amazon.com/images/I/91qWZqcI0yL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good quality *by G***I on February 16, 2023* These readdytosky esc are just perfect for a drone with a 14 to 16 inch blade. There light weight for a 40a esc and work really well with high current motor you can have them give a boost amprig of 50a for to attest 10 second which is relly helpful when you have to going full throttle before you crash with out blowing of your esc. but what I really like Is the 2 capacitor that (look great quality also) they give a very stable current to power your othe drone parts like flightcontroller becouse it so stable you shouldn't have any problems with the sensor on the drone. there definitely a great price for the quality ### ⭐⭐⭐⭐⭐ High quality esc's *by G***) on December 27, 2021* If I knew how easy it is to assemble my own quad, I would have started ages ago. These high quality esc's can't be beat. Just plug and go! Stay in the sky longer with these reliable esc's ### ⭐ 100% DO NOT BUY *by M***B on June 12, 2024* Within minutes of testing one of these ESCs caught on fire and burned out a leg on my motor. Worse than junk, they are flat out dangerous. ## Frequently Bought Together - Readytosky 2-4S 40A Brushless ESC Electronic Speed Controller 5V/3A BEC for F450 450mm 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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/368023282-40a-esc-2-4s-brushless-esc-speed-controller-5v-3a](https://www.desertcart.at/products/368023282-40a-esc-2-4s-brushless-esc-speed-controller-5v-3a) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-08-28*