AM32 120A Brushless ESC 3-6S Electronic Speed Controller RC Car
AM32 120A Brushless ESC 3-6S Electronic Speed Controller RC Car
AM32 Brushless Electronic Speed Controller — 120A Max, Built-in BEC, 3–6S
Take your RC car, drone, or high-power brushless build to the next level with the AM32 120A Brushless Electronic Speed Controller (ESC). Engineered for serious hobbyists and RC enthusiasts, this ESC delivers rock-solid power management, exceptional thermal performance, and versatile compatibility across a wide range of RC and brushless motor applications.
Made in Mainland China.
Key Features
- Dual Built-in BEC: Selectable 5.2V/4A or 7.2V/3.5A BEC output powers your receiver and servos cleanly without a separate regulator.
- High Current Capability: Handles up to 120A peak / 90A continuous (under adequate cooling), powered by low internal-resistance large-package MOSFETs with an overcurrent tolerance of 600A and just 0.45mΩ resistance.
- Multi-Layer PCB Design: 4-layer to 6-layer stacked board construction with copper strip flow diversion and a gold-plating process — delivering superior overcurrent handling and minimal heat buildup.
- Multiple Built-in Protections: Over-discharge protection, under-voltage cutoff, and high-temperature shutdown keep your equipment safe during intense runs.
- Wide Voltage Range: Compatible with 3S–6S LiPo (7V–26V) battery packs for flexible use across different RC platforms.
- Versatile Application: Suitable for RC cars and trucks, fixed-wing aircraft, UAVs/drones, high-power fans, industrial washers, and more.
- AM32 Firmware: Open-source AM32 firmware provides excellent throttle linearity, smooth startup, and active braking for responsive, consistent control.
Technical Specifications
| Operating Voltage | 3–6S LiPo (7V – 26V) |
| Rated Current | 120A max peak / 90A continuous |
| Built-in BEC Output | 5.2V / 4A | 7.2V / 3.5A |
| MOSFET Internal Resistance | 0.45 mΩ |
| Overcurrent Tolerance | 600A |
| PCB Size | 48 × 29 mm |
| Protections | Over-discharge, Under-voltage, High-temperature |
| Compatible Applications | RC Cars, Drones/UAVs, Fixed-Wing Aircraft, High-Power Fans |
| Firmware | AM32 (open-source) |
What's in the Box
- 1× AM32 Brushless Electronic Speed Controller (ESC)
Notes
- Colors may vary slightly from product images due to lighting and monitor differences.
- Please allow ±1–10 mm variation due to manual measurement.
- Continuous current rating assumes good airflow and heat dissipation conditions. Adequate cooling is recommended for sustained high-current use.
For guidance on safe RC hobby electronics practices, visit the U.S. Consumer Product Safety Commission (CPSC) for general consumer electronics safety tips.
Frequently Asked Questions
Q: What battery types and cell counts are compatible with this AM32 brushless ESC?
A: This ESC supports 3S to 6S LiPo battery packs, covering an input voltage range of 7V to 26V. It is not compatible with NiMH or other battery chemistries without verifying voltage compatibility.
Q: What does the built-in BEC do, and which output should I use?
A: The built-in BEC (Battery Eliminator Circuit) regulates battery voltage down to a stable output to power your receiver, servos, and other electronics. Choose 5.2V/4A for standard receivers and servos, or 7.2V/3.5A for high-voltage (HV) servos that require a higher input.
Q: Can I use this ESC for applications other than RC cars?
A: Yes — the AM32 120A ESC is versatile enough for RC cars and trucks, fixed-wing aircraft, UAVs/drones, high-power fans, and industrial brushless motor setups. Its wide voltage range and AM32 firmware make it adaptable to many brushless motor applications.
Q: What protections does this ESC have built in?
A: This ESC includes over-discharge protection, under-voltage cutoff, and high-temperature shutdown, all of which help safeguard your motor, battery, and ESC from damage during demanding use.
Q: What is AM32 firmware and why does it matter?
A: AM32 is an open-source ESC firmware known for smooth throttle response, precise motor startup, and configurable settings via a PC or mobile interface. It offers improved linearity and control compared to many stock ESC firmware options, making it popular among RC enthusiasts and drone builders.