JHEMCU EM-40A 40A 4-in-1 ESC BLHeli_S DSHOT600 2-6S LiPo 20x20mm for FPV Quads

Overview

JHEMCU EM-40A is a 4-in-1 ESC (electronic speed controller) for FPV multirotor builds, supporting 2–6S LiPo input and BLHeli_S firmware with DSHOT600. It is designed for a 20x20 mm (M3) mounting pattern and includes a current-sense (CURR) signal output to the flight controller.

Key Features

• 2–6S LiPo input voltage support
• 40A continuous current per channel (40A x 4)
• BLHeli_S firmware
• DSHOT600 signal protocol support (per product title)
• Current sensor output (CURR) to flight controller
• No BEC (external power regulation required if needed)
• 20 mm mounting hole spacing (M3), compact 4-in-1 layout

Specifications

Wiring / Pinout (8-pin harness)

• VBAT: Battery voltage
• GND: Ground
• NC: No connection
• CURR: Current meter signal output to FC
• M1 / M2 / M3 / M4: Motor signal inputs (Motor1–Motor4)

What's Included

• 1 x EM-40A 4-in-1 ESC
• 1 x 8P 1.0 mm plug cable
• 1 x red/black silicone wire set
• 1 x electrolytic capacitor

Documents

Firmware Download

For wiring help or order support, contact https://rcdrone.top/ or email [email protected].

Details

Everything needed for a clean install is included: the EM-40A 4-in-1 ESC, 8‑pin plug cable, power leads, and an electrolytic capacitor.

A lightweight 4‑in‑1 ESC helps keep compact FPV builds responsive while staying within tight weight budgets.

Pinout reference for quick wiring to the flight controller, including VBAT/GND and the CURR current-sense signal output.