Skystars KM35 35A BLHeli_S 3-6S 20x20 4-in-1 ESC

The Skystars KM35 is a compact 20x20 4-in-1 ESC for 3-6S FPV builds. It combines four motor-speed controllers on one board, giving pilots a single mounting point for freestyle, racing and general-purpose quadcopter builds instead of four separate ESCs.

Key features

• Four BLHeli_S-firmware speed controllers share one 20x20 mm board, simplifying wiring and saving stack height.
• Rated 35 A continuous per motor, with a 45 A peak burst available for up to 10 seconds under load.
• Supports Dshot300 and Dshot600 digital protocols for fast, glitch-free throttle signalling from the flight controller.
• Runs directly from 3-6S LiPo power, covering most freestyle and racing setups.
• Has no onboard BEC, so the flight controller and video system need their own 5V supply.

Specifications

• Continuous current: 35 A
• Peak current: 45 A (up to 10 s)
• Firmware: BLHeli_S
• Mounting: 20x20 mm, M3
• Dimensions: 31 x 36 x 3.9 mm
• Weight: 7.8 g
• In the box: ESC, 4 x M3 x 4 mm damping grommets, XT60 connector with power leads, 2 x 8-pin 50 mm harnesses, 35 V 560 uF capacitor

Check the frame's mounting pattern and the flight controller's BEC output before wiring this ESC into a build.