SpeedyBee F405 V4 BLS 55A 30x30 Combo Stack

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SpeedyBee F405 V4 BLS 55A 30x30 Combo Stack

FPV pilots, let's face it: You're tired of stacks that perform like a potato. You yearn for a stack that's got more power than a caffeine-crazed squirrel, with the reliability of your grandma's cookie recipe. You want to pull off insane flips and rolls without worrying about going kaboom mid-air. Well, I've got good news for you!

Enter the SpeedyBee F405 V4 BLS 55A 4in1 Flight Stack. It's not just another stack; it's your key to unlocking aerial badassery. We've bundled top-tier tech into a flight stack that'll make your quad feel like it's got an afterburner (figuratively, okay? Don't quote us on that).

SpeedyBee F405 V4 | Too Much Performance for this Price!


  • Supercharged STM32F405 FC: Forget the F411; we're rocking the F405 here.
  • 55A 4-in-1 ESC with Aluminum Alloy Heat Sink: Heat is the enemy. We threw it in the pit of despair.
  • Wireless Bluetooth Configuration via SpeedyBee App: Your smartphone just got smarter.
  • Built-in Battery Indicator: Never play the "Will-It-Die-Mid-Air" game again.
  • DJI Plug & Play: DJI O3, RunCam Link, Caddx Vista – you name it, we support it.
  • Blackbox with 4GB SD Card Slot: Because knowing is half the battle.
  • 8 Motor Outputs for X8/Y6/Fixed-Wings: More options than a Swiss Army knife.

SB F405V4 1


SB F405V4 Other 7SB F405V4 Other 8

Bluetooth Wizardry: Why crawl like a cave troll under your build to plug in a USB when you can do everything wirelessly with the SpeedyBee app? Configure your FC and ESC from the palm of your hand. This isn't your grandma's flight stack; this is the future.

Maximum Power Overload: An upgraded ESC blasting 55A of continuous current and peaking at 70A for 10 seconds. Your motors will sing songs of joy and victory (well, not literally, they're motors after all).

Cutting-Edge Gyro: You want precise flips and rolls, right? Our ICM42688P Gyro and dedicated power supply give you the control of a neurosurgeon's scalpel.

Power Management 101: Battery management so good, it should teach a course at MIT. A built-in 4-level battery indicator means you're always in the know.

Show Off Your Style: Adorn your rig with LEDs and choose your preset like a disco god. Party in the sky, anyone?

Protective Measures: From a TVS Protective Diode to high-capacity capacitors, we've got your stack covered like SPF 100 on a ginger at the beach.



Product Name SpeedyBee F405 V4 30×30 Flight Controller
IMU(Gyro) ICM42688P
USB Port Type Type-C
Barometer Built-in
OSD Chip AT7456E chip
BLE Bluetooth Supported. Used for Flight Controller configuration (MSP should be enabled with Baud rate 115200 on UART4)
WIFI Not supported
DJI Air Unit Connection Way Two ways supported: 6-pin connector or direct soldering.
6-pin DJI Air Unit Plug Supported. Completely compatible with DJI O3/RunCam Link/Caddx Vista/DJI Air Unit V1, no wire is needed to be changed.
Blackbox MicroSD Card Slot *Betaflight firmware requires the type of the microSD card to be either Standard (SDSC) or High capacity (SDHC) under 32GB, so extended capacity cards (SDXC) are not supported(Many high-speed U3 cards are SDXC). Also the microSD card MUST be formatted with the FAT16 or FAT32 (recommended) format, you could use any SD card less than 32GB, but the Betaflight can only recognize 4GB maximum. We suggest you use this 3rd party formatting tool and choose ‘Overwrite format’ then format your card. Also check out here for the recommended SD cards or buy the tested cards from our store.
Current Sensor Input Supported. For SpeedyBee BLS 55A ESC, please set scale = 400 and Offset = 0.
Power Input 3S – 6S Lipo(Through G, BAT pins/pads from the 8-pin connector or 8-pads on the bottom side)
5V Output 9 groups of 5V output, four +5V pads and 1 BZ+ pad( used for Buzzer) on front side, and 4x LED 5V pads. The total current load is 3A.
9V Output 2 groups of 9V output, one +9V pad on front side and other included in a connector on bottom side. The total current load is 3A.
3.3V Output Supported. Designed for 3.3V-input receivers. Up to 500mA current load.
4.5V Output Supported. Designed for receiver and GPS module even when the FC is powered through the USB port. Up to 1A current load.
ESC Signal M1 – M4 on bottom side and M5-M8 on front side.
UART 6 sets(UART1, UART2, UART3, UART4(Dedicated for Bluetooth connection)), UART5(Dedicated for ESC telemetry),UART6
ESC Telemetry UART R5(UART5)
I2C Supported. SDA & SCL pads on front side. Used for magnetometer, sonar, etc.
Traditional Betaflight LED Pad Supported. 5V, G and LED pads on bottom of the front side. Used for WS2812 LED controlled by Betaflight firmware.
Buzzer BZ+ and BZ- pad used for 5V Buzzer
BOOT Button Supported.
[A]. Press and hold BOOT button and power the FC on at the same time will force the FC to enter DFU mode, this is for firmware flashing when the FC gets bricked.
[B]. When the FC is powered on and in standby mode, the BOOT button can be used to controller the LED strips connected to LED1-LED4 connectors on the bottom side. By default, short-press the BOOT button to cycle the LED displaying mode. Long-press the BOOT button to switch between SpeedyBee-LED mode and BF-LED mode. Under BF-LED mode, all the LED1-LED4 strips will be controlled by Betaflight firmware.
RSSI Input Supported. Named as RS on the front side.
Smart Port / F.Port Not supported
Supported Flight Controller Firmware BetaFlight(Default), INAV
Firmware Target Name SPEEDYBEEF405V4
Mounting 30.5 x 30.5mm( 4mm hole diameter)
Dimension 41.6(L) x 39.4(W) x 7.8(H)mm
Weight 10.5g
Product Name SpeedyBee BLS 55A 30×30 4-in-1 ESC
Firmware BLHeli_S J-H-40
Wireless Configuration Full Configuration Supported in the SpeedyBee app
PC Configurator Download Link
Continuous Current 55A * 4
Burst Current 70(10 seconds)
TVS Protective diode Yes
External Capacitor 1000uF Low ESR Capacitor(In the package)
ESC Protocol DSHOT300/600
Power Input 3-6S LiPo
Power Output VBAT
Current Sensor Support (Scale=400 Offset=0)
ESC Telemetry Not supported
Mounting 30.5 x 30.5mm( 4mm hole diameter)
Dimension 45.6(L) * 44(W) *8mm(H)
Weight 23.5g


Package Contents

  • 1x SpeedyBee F405 V4 Flight Controller
  • 1x SpeedyBee BLS 55A 4in1 ESC
  • 1x Accesories Kit (contents may vary based on supply)
10.00 (cm)
2.00 (cm)
0.50 (cm)