--- product_id: 368023282 title: "2-4S 40A Brushless ESC Electronic Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 RC Helicopter Quadcopter(4PCS)" brand: "readytosky" price: "614 kr" currency: DKK in_stock: true reviews_count: 8 category: "Readytosky" url: https://www.desertcart.dk/products/368023282-2-4s-40a-brushless-esc-electronic-speed-controller-5v-3a store_origin: DK region: Denmark --- # 40A continuous current rating Supports 2-4S LiPo batteries 5V/3A BEC output for stable power 2-4S 40A Brushless ESC Electronic Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 RC Helicopter Quadcopter(4PCS) **Brand:** readytosky **Price:** 614 kr **Availability:** ✅ In Stock ## Summary > 🚁 Elevate your drone game with power and precision! ## Quick Answers - **What is this?** 2-4S 40A Brushless ESC Electronic Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 RC Helicopter Quadcopter(4PCS) by readytosky - **How much does it cost?** 614 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/368023282-2-4s-40a-brushless-esc-electronic-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:** Integrated dual capacitors ensure ultra-stable current delivery, protecting sensitive flight controllers and sensors from power fluctuations. - • **Value-Packed Quad Set:** Includes 4 ESCs in one package, perfect for quadcopters, delivering consistent performance without breaking the bank. - • **Plug & Play Simplicity:** Highly intelligent and adaptive ESC design means quick setup and smooth operation—get airborne faster and stay ahead of the pack. - • **Power Through the Skies:** Robust 40A ESC handles high current bursts up to 50A for those adrenaline-pumping full-throttle moments. - • **Versatile Battery Compatibility:** Seamlessly supports 2-4S LiPo batteries, giving you flexible power options for your F450, S500, or ZD550 drones. ## Overview The Readytosky 2-4S 40A Brushless ESC is a high-performance electronic speed controller designed for 450mm quadcopters and helicopters. It supports 2-4S LiPo batteries, delivers a stable 5V/3A BEC output, and features dual capacitors for smooth power delivery. This 4-pack offers a cost-effective solution for reliable flight control, optimized for quick setup and adaptive performance. ## 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: You may want to buy a different brand. - 3 of 4 just died, one smoked out. They just dropped dead in flight. I have 4 more on order but they will be returned for another brand. ## 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 | | Are Batteries Required | Yes | | Batteries are Included | No | | Battery Description | Lithium-Ion Polymer | | Best Sellers Rank | #175,618 in Toys & Games ( See Top 100 in Toys & Games ) #156 in Radio Control Vehicle Speed Controls | | Brand Name | Readytosky | | Color | Black | | Customer Reviews | 3.6 3.6 out of 5 stars (58) | | Included Components | [4 x 40A ESCs] | | Is Assembly Required | Yes | | 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 | | 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 ![2-4S 40A Brushless ESC Electronic Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 RC Helicopter Quadcopter(4PCS) - 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 ### ⭐ You may want to buy a different brand. *by M***K on November 29, 2025* 3 of 4 just died, one smoked out. They just dropped dead in flight. I have 4 more on order but they will be returned for another brand. ### ⭐⭐⭐⭐⭐ I received a replacement for one of the ESC *by A***R on April 29, 2022* One out of four didn’t work. Return date had expired . I received a replacement. I should have tested all four when received but waited until I had to install them in an airplane. The seller was very nice about the resolving the problem. Will buy from them again. ## 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.dk/products/368023282-2-4s-40a-brushless-esc-electronic-speed-controller-5v-3a](https://www.desertcart.dk/products/368023282-2-4s-40a-brushless-esc-electronic-speed-controller-5v-3a) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-04-23*