SpeedyBee F405 BLS 50A 4-in-1 ESC

It combines four individual brushless speed controllers on a single board with a shared power input. This dramatically reduces wiring on a quadcopter, saves space and weight, and lets the whole ESC mount neatly in a stack under the flight controller, which is why it is standard on modern FPV builds.

It accepts 3-6S LiPo input, covering everything from lighter 4S builds to the 6S packs most current 5-inch freestyle and racing quads use. Always check that your motor and prop current stays within the 50A per channel continuous rating at your chosen voltage.

Yes. It runs BLHeli_S JH50 firmware and supports the DSHOT300 and DSHOT600 digital protocols for precise, jitter-free throttle control. Note that BLHeli_S does not support bidirectional DShot RPM telemetry; if you need RPM filtering, choose a BLHeli_32 or AM32 ESC.

It uses the standard 30.5 x 30.5mm mounting pattern with 4mm holes, so it fits most 30x30 stacks. It is designed to pair with SpeedyBee's F405 flight controllers but works with any compatible FC, connected via the included plug-and-play cable on most setups.

Yes, it has an onboard current sensor. Set the scale to 386 and offset to 0 in your flight controller's configuration to get accurate current and battery capacity readings, which is useful for monitoring consumption and setting up low-battery warnings.

Each of the four channels is rated for 50A continuous with brief 55A bursts. Keep your motor's sustained current below 50A for cool, reliable operation, and ensure some airflow over the board during hard, sustained flying to keep the MOSFETs within their thermal limits.