---
product_id: 743268936
title: "2-4S 40A Brushless ESC Electronic Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 RC Helicopter Quadcopter(4PCS)"
brand: "readytosky"
price: "1043 Lei"
currency: RON
in_stock: true
url: https://www.desertcart.ro/products/743268936-2-4s-40a-brushless-esc-electronic-speed-controller-5v-3a
store_origin: RO
region: Romania
---

# 40A high current capacity 2-4S LiPo battery compatibility 5V/3A BEC output power 2-4S 40A Brushless ESC Electronic Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 RC Helicopter Quadcopter(4PCS)

**Brand:** readytosky
**Price:** 1043 Lei
**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?** 1043 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/743268936-2-4s-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

- • **Quad-Pack Advantage:** Includes 4 ESCs, perfect for upgrading or building your F450, S500, or ZD550 quadcopter
- • **Stable Power Supply:** 5V/3A BEC ensures consistent voltage for onboard electronics
- • **Plug & Play Simplicity:** Highly intelligent and adaptive ESC design for effortless setup and use
- • **Power-Packed Performance:** 40A continuous current for smooth, reliable flight control
- • **Versatile Battery Support:** Compatible with 2-4S LiPo batteries to maximize your drone’s flight time

## Overview

The Readytosky 2-4S 40A Brushless ESC is a high-performance electronic speed controller designed for 450mm quadcopters like the F450, S500, and ZD550. Supporting 2-4S LiPo batteries and delivering a stable 5V/3A BEC output, it offers reliable power management in a compact 32g unit. This quad-pack set ensures you have all four ESCs needed for a complete build or upgrade, featuring intelligent adaptive technology for easy installation and smooth flight control.

## Description

ESC Specification: BEC : 5V/3A Li-ion/Li0poly:2-4S Size:about 7.2x2.4cm (ESC with banana connector) Weight: about 32g(with banana connector);  Note: This ESC is not able to flash the firmware. Package included: 4pcs*40A ESC

## 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 |
|---------------|-------|
| Model Number | M15-4 |
| Assembly Required | Yes |
| Batteries Required | Yes |
| Batteries Included | No |
| tech_spec_battery_description_toys | Lithium-Ion Polymer |
| Material Type(s) | Plastic |
| Colour | Black |
| Package Dimensions | 11.6 x 10.6 x 3.5 cm; 154 g |
| Item model number | M15-4 |
| Manufacturer recommended age | 18 years and up |
| Manufacturer | Readytosky |
| Item Weight | 154 g |

## 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)

## Frequently Bought Together

- Readytosky 2-4S 40A Brushless ESC Electronic Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 RC Helicopter Quadcopter(4PCS)
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**Shop now:** [https://www.desertcart.ro/products/743268936-2-4s-40a-brushless-esc-electronic-speed-controller-5v-3a](https://www.desertcart.ro/products/743268936-2-4s-40a-brushless-esc-electronic-speed-controller-5v-3a)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-04-28*