Q: What is the iFlight BLITZ F7 Stack E55S used for?

A: It is a flight controller and 4-in-1 ESC stack designed for FPV drones (freestyle and racing), supporting stable flight control, high current output, and advanced telemetry functions.

Q: What size drones is it suitable for?

A: It is typically used for 5–7 inch FPV drones powered by 2–6S LiPo batteries, especially freestyle and long-range builds.

Q: What processor does the flight controller use?

A: The FC uses an STM32F722 MCU, providing high processing power for Betaflight and advanced filtering.

Q: What gyro is included?

A: It is equipped with the ICM42688 gyro, offering improved flight precision and lower noise compared to older sensors.

Q: Does it support Blackbox logging?

A: Yes, it includes 32MB Blackbox flash storage for flight data recording and tuning.

Q: What is the ESC current rating?

A: The E55S 4-in-1 ESC supports 55A continuous current and up to 65A burst, suitable for high-power motors.

Q: What battery input does it support?

A: It supports 2–6S LiPo battery input, making it compatible with most FPV freestyle setups.

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Top highlights

Powered by STM32F722 for fast response and smooth, precise FPV control.
55A continuous / 65A burst ESC supports 2–6S setups with stable performance.
Optimized circuit design with LC filter reduces noise for more stable gyro data.
Built-in connectors for DJI HD system and multiple UARTs for easy installation.
ICM42688 gyro + DPS310 barometer for improved flight stability and tuning accuracy.

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FC Features

Improved circuit design, better components and lower electrical noise!

DJI HD VTX Connector (Plug-and-Play / No soldering required)

FC indicator LEDs for visual debugging

With LC filter

FC Specifications

MCU: STM32F722

Gyro: ICM42688

Barometer: DPS310

OSD Chip: AT7456E

Flash: 32MB (Blackbox flash)

UARTS: 6

Motor outputs: 4x (SH1.0 connector)

I2C serial: SDA / SLA pads

Smartaudio / IRC Tramp VTX protocol supported

LED controller: Yes

Beeper pad: Yes

Firmware target: IFRC-IFLIGHT_BLITZ_F722

Mount pattern: 30.5*30.5mm / 4mm PCB hole diameter

Dimensions: 36.5*35 mm

Weight: 7.8g

BEC: 5V 2.5A / 9V 2A

Wiring Suggestion

UART 1 for VTX HD / Analog

UART 2 for a Receiver

UART 3/4/5 for GPS or other sensors that require a serial port

UART 6 for ESC Telemetry

ESC Specifications

Mounting Holes: 30.5*30.5mm/Φ4mm

Weight: 14.7g

Supports 2-6S lipo input

MCU: BB21

Constant: 55 Amps

Burst: 65 Amps

Current sensor: Yes

BEC: No

Current rate: 200

Supports: DShot DShot150/300/600/MultiShot/ OneShot etc.

Target: Q-H-25 16.7(BlheliS) / Bluejay Q-H-25 (Bluejay)

Packing List

1 x BLITZ F7 V1.2 Flight Controller

1 x BLITZ E55S 4-IN-1 45A 2-6S ESC

1 x Screw Bag

Recommendations

Reviews

F*****r
Verified

Strong ESC output with excellent thermal handling. Works smoothly on 6S without overheating.

BLITZ F7 Stack (E55S 4-IN-1ESC)：BLITZ F7 E55S Stack
D**********r
Verified

Good overall performance but slight EMI noise detected. Requires proper tuning for best results.

BLITZ F7 Stack (E55S 4-IN-1ESC)：BLITZ F7 E55S Stack
V**********r
Verified

The unit wase flashed and configured properly.

BLITZ F7 Stack (E55S 4-IN-1ESC)：BLITZ F7 E55S Stack
H*******h
Verified

Very reliable stack with strong balance between performance and safety. No issues so far.

BLITZ F7 Stack (E55S 4-IN-1ESC)：BLITZ F7 E55S Stack
W**********w
Verified

Extremely fast response and stable flight performance. Perfect for freestyle and racing builds.

BLITZ F7 Stack (E55S 4-IN-1ESC)：BLITZ F7 E55S Stack
F*********Z
Verified

Good compatibility with DJI system and clean installation process. Slight tuning needed.

BLITZ F7 Stack (E55S 4-IN-1ESC)：BLITZ F7 E55S Stack
s******l
Verified

The stack arrived well packaged and everything works perfectly. Build quality feels premium and reliable.

BLITZ F7 Stack (E55S 4-IN-1ESC)：BLITZ F7 E55S Stack
R*******e
Verified

Excellent power delivery and stable response even under aggressive throttle inputs.

BLITZ F7 Stack (E55S 4-IN-1ESC)：BLITZ F7 E55S Stack

FAQ Feel free to ask us any questions

Q: What is the iFlight BLITZ F7 Stack E55S used for?: A: It is a flight controller and 4-in-1 ESC stack designed for FPV drones (freestyle and racing), supporting stable flight control, high current output, and advanced telemetry functions.
Q: What size drones is it suitable for?: A: It is typically used for 5–7 inch FPV drones powered by 2–6S LiPo batteries, especially freestyle and long-range builds.
Q: What processor does the flight controller use?: A: The FC uses an STM32F722 MCU, providing high processing power for Betaflight and advanced filtering.
Q: What gyro is included?: A: It is equipped with the ICM42688 gyro, offering improved flight precision and lower noise compared to older sensors.
Q: Does it support Blackbox logging?: A: Yes, it includes 32MB Blackbox flash storage for flight data recording and tuning.