# SpeedyBee BLS 55A 4-in-1 ESC (F405 V4 stack ESC)

![SpeedyBee BLS 55A 4-in-1 ESC (F405 V4 stack ESC)](https://parts.trymaglev.com/img/dr-speedybee-bls-55a-4in1.webp)

BLHeli_S 3-6S 55 A 4-in-1 ESC sold as the lower half of the SpeedyBee F405 V4 stack.

- Maglev ID: dr-speedybee-bls-55a-4in1
- Brand: SpeedyBee
- MPN: unknown
- Category: drone / Electronic Speed Controllers
- Origin: CN (maker HQ, factory not confirmed)
- Maker: SpeedyBee (Zhuhai KuaiFeng Technology Co., Ltd.) (brand, CN)
- NDAA: unknown · Blue UAS: not-listed · FCC: n/a
- HTS: 8504.40.40.00 (typical)
- MOQ: 1 · Lead time: unknown
- Confidence: VERIFIED

## Price
- No public price. Request a quote via POST /api/rfq or the order pad.

## Specifications
- Continuous current: 55 A x4 (70 A burst 10 s)
- Cells (LiPo): 3-6S
- Protocol: DShot300/600 (BLHeli_S J-H-40)
- Weight: 23.5 g

## Links
- Product: https://www.speedybee.com/speedybee-f405-v4-bls-55a-30x30-fc-esc-stack/
- Datasheet: https://store-fhxxhuiq8q.mybigcommerce.com/product_images/img_SpeedyBee_F405_V4_Stack/SpeedyBee_F405_V4_Stack_Manual_EN.pdf
- CAD: none

## Equivalents
- ARK Electronics ARK 4IN1 ESC (dr-ark-4in1-esc)
- Holybro Tekko32 F4 4in1 50A ESC (AM32) (dr-holybro-tekko32-f4-50a)

## Works with
- SpeedyBee F405 V4 BLS 55A 30x30 FC & ESC Stack (dr-speedybee-f405-v4-stack)
- iFlight XING2 2207 1855KV FPV Motor (dr-iflight-xing2-2207-1855kv)

## Sources
- https://www.speedybee.com/speedybee-f405-v4-bls-55a-30x30-fc-esc-stack/ (ESC specs)