---
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: "VT18416"
currency: VUV
in_stock: true
reviews_count: 8
category: "Readytosky"
url: https://www.desertcart.vu/products/546942384-readytosky-40a-esc-opto-2-6s-brushless-esc-electronic-speed
store_origin: VU
region: Vanuatu
---

# 40A continuous current power Supports 2-6S LiPo battery range Optimized firmware for seamless compatibility Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller for F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS)

**Brand:** readytosky
**Price:** VT18416
**Availability:** ✅ In Stock

## Summary

> 🚁 Elevate your drone game with power and precision!

## 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?** VT18416 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/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

- • **Lightweight Design:** At just 33.2g, it keeps your quadcopter agile without adding bulk.
- • **Plug & Play Firmware:** Specifically optimized ESC firmware ensures flawless integration with popular models like F450, F550, and S500.
- • **Reliable Flight Control:** Adaptive intelligence for stable, responsive speed control—perfect for professional-grade RC flying.
- • **Power-Packed Performance:** Delivers a robust 40A continuous current for smooth, high-throttle flights.
- • **Wide Voltage Compatibility:** Supports 2-6S LiPo batteries, giving you flexible power options for extended flight times.

## Overview

The Readytosky 40A OPTO Brushless ESC is a lightweight, high-current electronic speed controller designed for 2-6S LiPo batteries. Optimized firmware ensures compatibility with popular RC helicopter and quadcopter models like F450 and F550, delivering reliable, adaptive speed control for professional-grade flight performance.

## Description

desertcart.com: Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller for F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS) : Toys & Games

Review: Inconvenient startup, but works fine - Inconvenient startup procedure, but the ESCs themselves seem to work fine for my 2-3s setups
Review: Good value - 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

## 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 | #141,995 in Toys & Games ( See Top 100 in Toys & Games ) #101 in Radio Control Vehicle Speed Controls |
| Customer Reviews | 4.4 4.4 out of 5 stars (51) |
| Item Weight | 5.6 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)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Inconvenient startup, but works fine
*by T***K on January 8, 2026*

Inconvenient startup procedure, but the ESCs themselves seem to work fine for my 2-3s setups

### ⭐⭐⭐⭐⭐ Good value
*by D***. on 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

### ⭐⭐⭐⭐ Wires are too short
*by A***D on January 8, 2022*

I'm using s500 frame and the wires can't reach the pdb

## Frequently Bought Together

- Readytosky 40A ESC OPTO 2-6S Brushless ESC Electronic Speed Controller for F450 450mm F550 S500 ZD550 RC Helicopter Quadcopter(4PCS)
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**Shop now:** [https://www.desertcart.vu/products/546942384-readytosky-40a-esc-opto-2-6s-brushless-esc-electronic-speed](https://www.desertcart.vu/products/546942384-readytosky-40a-esc-opto-2-6s-brushless-esc-electronic-speed)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-06*