iFlight BLITZ F7 Stack (E55S 4-in-1 ESC)

The iFlight BLITZ F7 Stack pairs an F722 flight controller with the E55S 55A 4-in-1 ESC, built for 5-inch freestyle quads, 7-inch long-range builds and cinelifters on a standard 30.5x30.5mm mounting pattern.

Key features

• Plug-and-play DJI HD VTX connector avoids soldering when fitting a DJI O3 Air Unit.
• Six full UARTs allow simultaneous connection of an ELRS/Crossfire receiver, digital HD video, telemetry and GPS.
• Dual independent BECs (5V/2.5A and 9V/2A) supply stable power to VTX, receiver and GPS hardware separately from the flight controller.
• 32MB onboard flash records detailed Blackbox logs for tuning and crash analysis.

Specifications

• MCU: STM32F722
• Gyro: ICM42688
• Barometer: DPS310
• Continuous current: 55 A
• Burst current: 65 A
• BEC output: 5V/2.5A, 9V/2A
• UARTs: 6
• Mounting pattern: 30.5x30.5 mm
• Weight: FC 7.8 g, ESC 14.7 g
• OSD: AT7456E
• FC dimensions: 36.5 x 35 mm
• ESC: 2-6S input, current sensor, no BEC
• In the box: flight controller, 4-in-1 ESC, screw bag

The E55S ESC ships on BLHeli_S firmware and supports Bluejay flashing for bidirectional DShot and RPM filtering if you want to unlock that later.