SpeedyBee F405 AIO 9V/5V 2A External BEC
by Speedybee

The SpeedyBee F405 AIO 9V/5V 2A External BEC (SKU: SB-A-F4-40A-AIO-BEC) is an ultra-compact step-down power regulator module engineered to expand the peripheral power capabilities of the SpeedyBee F405 AIO flight controller. Designed to offload thermal strain and high current draw from the flight controller's internal circuitry, this external module converts incoming battery power into a clean, regulated 5V or 9V DC output delivering up to 2.0A continuous current.

Configured to output 5V by default, the board includes onboard solder jumper pads that switch the rail to 9V when shorted, allowing builders to reliably power digital HD video transmitters (such as Caddx Vista or Walksnail Avatar), analog video transmitters, or 5V Meteor LED arrays. Weighing approximately 2.2 grams and measuring roughly 16 x 9.5 x 6.4 mm, it connects via an included 6-pin 30mm wiring harness, enabling flexible mounting inside tight cinewhoops, toothpicks, and lightweight micro quad frames.

Key Features

• Dual-Voltage Switchable Rail: Delivers 5V DC by default and switches to 9V DC output by bridging the dedicated onboard solder jumper pads.

• Continuous 2.0A Output Capacity: Supplies up to 2A of continuous current to support power-hungry video transmitters and auxiliary LED strips without thermal throttling.

• Thermal Offloading for AIO Boards: Relieves thermal overhead from the flight controller core by handling voltage conversion on an isolated external circuit.

• Plug-and-Play 6-Pin Connection: Interfaces directly with the dedicated BEC socket on the SpeedyBee F405 AIO board using the included 30mm 6-pin harness.

• Ultralight 2.2g Profile: Low mass and small footprint make it easy to secure in compact micro frames and cinewhoop ducts without affecting aircraft center of gravity.

• Filtered Power Delivery: Suppresses motor voltage noise and prevents brownouts during aggressive throttle maneuvers.

Technical Specifications

• Model Identifier: SpeedyBee F405 AIO 9V/5V 2A External BEC

• Manufacturer SKU / Part Number: SB-A-F4-40A-AIO-BEC

• Target Compatibility: SpeedyBee F405 AIO 35A / 40A Flight Controllers

• Input Voltage: 3S – 6S LiPo power rail (routed via F405 AIO connection)

• Output Voltage: 5V DC (Default) or 9V DC (via solder jumper pad)

• Continuous Output Current: 2.0A Max

• Interface Connector: 6-Pin Socket (compatible with 30mm SH1.0 harness)

• Dimensions: ~16 mm x 9.5 mm x 6.4 mm (0.625 in x 0.375 in x 0.25 in)

• Net Weight: ~2.2 grams.

What Is Included

• (1) SpeedyBee F405 AIO 9V/5V 2A External BEC Module (SKU: SB-A-F4-40A-AIO-BEC)

• (1) 6-Pin 30mm Connection Cable

• (1) Transparent Protective Heat Shrink Tube.