For racing drones and other remote-controlled vehicles, the highly efficient electronic speed controller SpeedyBee BLS 50A 30×30 4-in-1 ESC is used. With its all-in-one design, this small and light ESC integrates four separate ESCs onto a single circuit board.
With a power delivery capacity of up to 50A, it is appropriate for high-performance applications. Smooth and accurate throttle response is ensured by the ESC’s sophisticated motor control algorithms and wide voltage range support. Drone enthusiasts and racers will find the Speedybee BLS 50A 30*30 4-in-1 ESC to be a great option due to its compact form factor and outstanding performance characteristics.

Specification:
| Firmware | BLHeli_S JH50 |
|---|---|
| Continuous current(A) | 50A * 4 |
| Wireless Configuration | Full Configuration Supported in the SpeedyBee app |
| External Capacitor(uF) | 1000uF Low ESR Capacitor(In the package) |
| Power Input | 3-6S LiPo |
| Power Output Ports | VBAT |
| Current Sensor Input | Support (Scale=386 Offset=0) |
| Mounting Holes Diameter (mm) | 30.5 x 30.5mm( 4mm hole diameter) |
| Length (mm): | 45.6 |
| Width (mm) | 44 |
| Height (mm) | 6.1 |
| Weight (gm) | 13.8 |
| Shipping Weight | 0.085 kg |
| Shipping Dimensions | 12 × 5.8 × 3 cm |
Features:
- Compact and lightweight design
- The maximum power output of 50A
- Suitable for high-performance applications and racing drones
- Wide voltage range support
- Advanced motor control algorithms for smooth throttle response
- Designed for efficient and precise motor control.
Package Includes:
1x SpeedyBee BLS 50A 30×30 4-in-1 ESC
1 x 35V 1000uF low ESR Capacitor
5 x M3 silicone O Ring
1 x XT60 Power cable(70mm)
1 x SH 1.0mm 30mm length 8pin cable(for FC-ESC connection)
5 x M3*8.1mm silicone Grommets(for ESC)
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