Product overview
The HAKRC BLS 20A ESC from Shenzhen Haike Technology Co., Ltd. controls motor drive through hardware PWM and accepts several throttle signal formats. Its electronics combine an EMF8BB21F16G controller operating at up to 48MHz, a three-in-one IC drive and a high-frequency ceramic capacitor. The six-layer PCB uses 3-ounce copper and metallized wrapping around the solder-pad edges to help resist pad detachment during use. A built-in ammeter and programmable LED consolidate current measurement and lighting within the compact assembly.
The pencil-sized form provides a qualitative indication of installation space. Soft silicone input and output cables support wiring and soldering, with heat resistance and durability among their stated properties. BLHeli-S firmware supports parameter adjustment and firmware updates through the throttle signal cable, other development boards, or flight controllers running Cleanflight or Betaflight. Signal options include regular PWM, Oneshot125, Oneshot42, Multishot and DShot150/300/600. Damped Light adds regenerative braking for responsive motor deceleration, while active freewheeling provides an energy-recovery function.
Specifications
| Specification | Value & conditions |
|---|---|
| Model | HAKRC BLS 20A ESC |
| Manufacturer | Shenzhen Haike Technology Co., Ltd. |
| Main control chip | EMF8BB21F16G |
| Controller operating frequency | Up to 48MHz |
| IC drive | Three-in-one IC drive |
| Capacitor | High-frequency ceramic capacitor |
| Solder-pad construction | Metallized edge wrapping helps prevent solder-pad detachment during use. |
| PCB copper thickness | 3-ounce copper thickness |
| PCB layer count | 6-layer board |
| Integrated current measurement | Built-in ammeter |
| Integrated lighting | Built-in programmable LED light |
| Physical size description | Pencil-sized volume; qualitative size description |
| Firmware | Native BLHeli-S firmware support |
| Parameter setting and firmware update methods | Parameter setting and firmware updates through the throttle signal cable, other development boards, or flight controllers running Cleanflight or Betaflight firmware |
| Motor drive | Hardware PWM motor drive with low noise and smooth throttle response |
| Braking | Damped Light technology with regenerative braking for responsive motor deceleration |
| Energy recovery | Active freewheeling technology for battery energy recovery and extended flight duration |
| Analog throttle signal support | Regular PWM, Oneshot125, Oneshot42 and Multishot |
| Digital throttle signal support | DShot150/300/600 |
| Input and output cables | Soft silicone input and output cables, described as durable, heat-resistant and convenient for soldering |
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