ReadytoSky 40A 2-4S ESC for Drone

The ReadytoSky 40A 2-4S ESC is a brushless electronic speed controller designed for multi-rotor drones and quadcopters operating on 2-4 cell lithium polymer batteries. Professional drone pilots, FPV racing enthusiasts, and aerial photography operators rely on this ESC to deliver precise motor speed regulation and smooth throttle response across varying flight conditions.

Specifications

• Continuous current: 40A
• Battery input: 2S to 4S LiPo (7.4V – 14.8V)
• BEC output: 5V / 3A
• Signal input: Standard PWM (50-500Hz)
• Dimensions: 25mm x 15mm x 6mm (approx.)
• Weight: 8g (approx.)
• Firmware: Pre-flashed with BLHeli_S (supports BLHeliSuite configuration)

Compatible with

• Arduino (Nano, Uno, Mega) via flight controller boards
• ESP32 and ESP8266-based flight controllers
• Raspberry Pi (with PWM hat or GPIO)
• STM32-based flight controllers (e.g., F3, F4, F7)
• Standard FPV flight controllers (Betaflight, Cleanflight, iNav)

What you can build with it

• FPV racing quadcopter (250mm to 450mm frame)
• Aerial photography drone with 3S or 4S battery
• Custom multi-rotor for payload delivery or surveillance

Built and Backed by Compoden

Every ReadytoSky 40A ESC you buy from Compoden comes with a free AI build companion delivered via QR code, email, or WhatsApp — it helps you wire, configure, and program this ESC into a working drone project. With 10 years of supplying makers and institutions across India, we ensure every component is genuine and ready to fly. Pay your way: UPI, cards, or Cash on Delivery, anywhere in India.

Frequently Asked Questions

What is the maximum current this ESC can handle?

The ReadytoSky 40A ESC can handle a continuous current of 40A. For short bursts (up to 10 seconds), it can handle up to 50A. Always ensure your motor and propeller combination does not exceed 40A continuous draw.

What payment options are available for ReadytoSky 40A ESC?

You can pay using UPI, debit/credit cards, or Cash on Delivery (COD). All payment methods are available across India.

How long does delivery take and where do you ship?

We ship ReadytoSky 40A ESC across India including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Pune. Delivery typically takes 3-7 business days depending on your location.