SpeedyBee BLS 35A Mini V2 20x20 4-in-1 ESC
by Speedybee

SpeedyBee BLS 35A Mini V2 20x20 4-in-1 ESC

The SpeedyBee BLS 35A Mini V2 is a professional-grade, high-density power management system engineered for the demanding 20x20mm mounting standard. Designed to drive everything from 2-inch micro-cinewhoops to lightweight 5-inch racing drones, this 4-in-1 ESC delivers a consistent 35A per channel, supported by a robust 6-layer 2oz PCB. This optimized thermal and electrical design allows for an impressive 140A total continuous output, making it a reliable choice for tactical sUAS and high-speed reconnaissance platforms that require industrial-level durability in a compact form factor.

A standout feature for mission-critical reliability is the integrated TVS (Transient Voltage Suppression) diode, which protects the ESC’s sensitive MOSFETs from voltage spikes during battery plug-ins or motor-blocking crashes. Combined with Japanese-made TDK filtering SMT capacitors, the V2 ensures ultra-clean power delivery and minimizes electrical noise that could otherwise interfere with high-fidelity video feeds or sensitive gyro data. For pilots and defense contractors utilizing the SpeedyBee ecosystem, this ESC supports wireless configuration, allowing for motor direction changes and firmware adjustments via a smartphone—essential for rapid field repairs and university aerospace research labs.

Technical Specifications

• Continuous Current: 35A * 4 (140A Total)

• Burst Current: 45A (5 Seconds)

• Input Voltage: 3S - 6S LiPo (11.1V - 25.2V)

• Firmware: BLHeli_S J-H-40

• Protocols: DShot300 / 600

• Current Sensor: Supported (Scale = 250, Offset = -500)

• Mounting Pattern: 20 x 20mm (M2 & M3 compatible)

• Dimensions: 35.0mm x 35.0mm x 5.5mm

• Weight: 7.2g

• Protection: Onboard TVS Protective Diode

• PCB Construction: 6-Layer 2oz Copper

What is Included

• 1x SpeedyBee BLS 35A Mini V2 4-in-1 ESC

• 1x 35V 470uF Low-ESR Capacitor

• 1x XT30 Power Cable (70mm)

• 1x SH1.0 8-pin Connection Cable (30mm)

• 1x Set of M2 & M3 Anti-vibration Silicone Grommets

• 1x Manual & App Configuration Card