The T-Motor F55A Pro III 4-in-1 ESC is a premium, 32-bit electronic speed controller designed for heavy-duty FPV drones and X8 configurations. It features 4x55A continuous current, 3-8S LiPo compatibility, AM32 firmware, and a built-in TVS protective diode to absorb voltage spikes.

Key Specifications
 
Input Voltage: 3S - 8S LiPo
Continuous Current: 4 × 55A
Burst Current: 4 × 65A (10 seconds)
Firmware: AM32
Microcontroller: STM32G071
MOSFETs: TPHR8504
PWM Frequency Range: 16 - 128 kHz
Telemetry Support: Yes
Mounting Pattern: 30.5 × 30.5 mm (M3)
Dimensions: 44 × 40 × 7.5 mm
Weight: 17.8g (including heatsink)
 
Notable Features
 
Advanced Cooling: Designed with a dual oxide heat sink to efficiently dissipate heat and keep the board running cool under heavy loads.
Wide PWM Frequency: Automatically matches frequency with motor KV to achieve smoother and more efficient flight performance.
High Durability: Features premium imported materials and TVS (Transient Voltage Suppression) protection to safeguard against electrical damage.
Plug & Play: Perfectly designed to pair with T-Motor's F7 Pro flight controller for a streamlined installation