- New Firmware: BLHeli_S, new code based BLHeli
- MCUs: 8 bit, BusyBee1 (EFM8BB10F8) at 24MHz and BusyBee2 (EFM8BB21F16) at 48MHz. BB1 MCU can support up to 350k eRPM(Ref.F330 around 200K), BB2 is set to 500k eRPM(F39x around 360K)
- Hardware PWM 36KHZ refresh, more smooth throttle response and silent operation.
- Damped light/synchronous rectification/ active freewheeling
- Supports regular 1-2ms input signal, as well as Oneshot125 (125-250us), Oneshot42(41.7-83.3us) and Multishot (5-25us). Auto-detected when the ESC sees an input signal.
- Sync loss protection feature, it will have the same good sync holding properties as base BLHeli.
Technical Specifications for 5A 4 in 1 (BB2 MCU):
- Continuous Current: 5A
- Peak Current (10s): 7A
- BEC: NO
- Lipo: 1s - 2s
- Programming: Yes
- Weight: 2g
- Size: 20x20mm (mounting holes at 16x16mm)
- Also available in Amazon USA
Technical Specifications for 6A 4 in 1 (BB2 MCU):
- Continuous Current: 6A
- Peak Current (10s): 10A
- BEC: YES (0.5A/3.3v)
- Lipo: 1s - 2s
- Programming: Yes
- Weight: 7g
- Size: 27x27mm
Technical Specifications for 6A 4 in 1 (BB2 MCU):
- Continuous Current: 6A
- Peak Current (10s): 10A
- BEC: YES (0.5A/3.3v)
- Lipo: 1s - 2s
- Programming: Yes
- Weight: 7g
- Size: 27x27mm
Technical Specifications for 10A 4 in 1 (BB2 MCU):
- Continuous Current: 10A
- Peak Current (10s): 15A
- BEC: no
- Lipo: 2s - 3s
- Programming: Yes
- Weight: 13g
- Size: 27x27mm
Technical Specifications for 20A 4 in 1 (BB2 MCU):
- Continuous Current: 20A
- Peak Current (10s): 25A
- BEC: YES (5V/1.5A)
- Lipo: 2s - 4s
- Programming: Yes
- Weight: 19g
- Size: 36x36mm
Technical Specifications for 30A 4 in 1 (BB2 MCU):
- Continuous Current: 30A
- Peak Current (10s): 35A
- BEC: no
- Lipo: 2s - 6s
- Programming: Yes
- Weight: 25g
- Size: 35x35mm
Technical Specifications for 33A 4 in 1 (BB2 MCU with 5V/12V BEC):
- Continuous Current: 33A
- Peak Current (10s): 43A
- BEC: 5V/1A (LBEC) 12V/3A (SBEC)
- Lipo: 3s - 5s
- Programming: Yes
- Weight: 19g
- Size: 36x36mm
Technical Specifications for 35A 4 in 1 (BB2 MCU):
- Continuous Current: 35A
- Peak Current (10s): 40A
- BEC: no
- Lipo: 2s - 4s
- Programming: Yes
- Weight: 25g
- Size: 35x35mm
Technical Specifications for 35A 2s - 6s (BB2 MCU):
- Continuous Current: 35A
- Peak Current (10s): 40A
- BEC: no
- Lipo: 2s - 6s
- Programming: Yes
- Weight: 11.7g
- Size: 36x17mm
Technical Specifications for 7A:
- Continuous Current: 7A
- Peak Current (10s): 10A
- BEC: no
- Lipo: 1s - 2s
- Programming: Yes
- Weight: 1.1g
- Size: 17x 11mm
Technical Specifications for 20A:
- Continuous Current: 20A
- Peak Current (10s): 25A
- BEC: no
- Lipo: 2s - 4s
- Programming: Yes
- Weight: 7.9g
- Size: 27x 12mm
Technical Specifications for 30A (BB2):
- Continuous Current: 30A
- Peak Current (10s): 35A
- BEC: no
- Lipo: 2s - 4s
- Programming: Yes
- Weight: 9.1g
- Size: 28x 13mm
Technical Specifications for 40A (BB2):
- Continuous Current: 40A
- Peak Current (10s): 45A
- BEC: no
- Lipo: 2s - 5s
- Programming: Yes
- Weight: 9.6g
- Size: 32x 15mm
Technical Specifications for 30A 2s - 6s (BB2 MCU):
- Continuous Current: 30A
- Peak Current (10s): 35A
- BEC: no
- Lipo: 2s - 6s
- Programming: Yes
- Weight: 15.8g
- Size: 35x 19mm
Technical Specifications for 20A 2 in 1 (BB2 MCU):
- Continuous Current: 20A
- Peak Current (10s): 25A
- BEC: no
- Lipo: 2s - 4s
- Programming: Yes
- Weight: 13g
- Size: 27x27mm (with M3 mounting holes at 20.5mm x 20.5mm)
Technical Specifications for 20A 2 in 1 Solder Pad Edition (BB2 MCU):
- Continuous Current: 20A
- Peak Current (10s): 25A
- BEC: no
- Lipo: 2s - 4s
- Programming: Yes
- Weight: 13g
- Size: 27x27mm (with M3 mounting holes at 20mm x 20mm)