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Ultimate T-motor F55a Pro Ii 55a 3-6s Blheli32 4-in-1 Esc W/bec Summer Must-have [HObQRjlg]

$59.99 $191.99 -69%

Product Description F55A PROⅡ 6S 4IN1 F55A PROII is a 4-in-1 ESC of high-performance motor demanding racing events with selected materials, reasonable PCB layout, and advanced technics for stable and swift operation under solid current—original BLHE

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Ultimate T-motor F55a Pro Ii 55a 3-6s Blheli32 4-in-1 Esc W/bec Summer Must-have [HObQRjlg]


Product Description

F55A

F55A PROⅡ 6S 4IN1

F55A PROII is a 4-in-1 ESC of high-performance motor demanding racing events with selected materials, reasonable PCB layout, and advanced technics for stable and swift operation under solid current—original BLHELI "32" Firmware with high-quality 32-bit ST main control chip.

Selected Materials high-quality MOSFET is capable of working at 40V while conducting RDS is only 0.85mΩ. It dramatically helps bring down the ESC heat and bring up the safety factor and power.

Supports up to 128KHz PWM frequency Minimum support 16KHz PWM frequency. Bring a smooth flight experience.

Industrialized PCB Production Process The current of a single ESC could reach up to 55A attributing to the high TG PCB material and reasonable PCB layout. Real-time current dates are also accessible.

Cooling Design Matel cooling fins contribute to enhancing the cooling performance of ESCs and prolonging the service life.

DAMPING DESIGN Holes for damping rings are available on the ESCs to protect the sensing components and FC.

12

Spec:

GND: Ground wire,

BAT+:Battery Volt monitoring port with the battery voltage is to connect to the Battery Volt monitoring port on flight controller,

10V:10V Power output port.

ESC4-ESC1:Throttle Signal Input Ports. Port M1 is for ESC M1,M2 is for ESC M2, M3 is for ESC M3, and M4 is for ESC M4,

CURRENT:Amp monitoring port with the amperage of 15.2mv/A is to connect to the Amp monitoring port on flight controller,

TELEMETRY:Data transmission port

13

Notes

1. To avoid any damage to the ESCs from irrational propulsion system and aircraft collocation. please read relevant manual before ESC utilization.

2. Please make sure all the wires and joint parts are well insulated,short-circuits will cause damag to the ESCs. If welding is required, please use welding equipment of equivalent power. Bad welding will lead to disorder over aircraft control,and many other unpredictable problems.

3. Never lock the rotor of motors when ESCs are on the run.Otherwise, fatal damage will be caused to ESCs and possibly to the motors too. When motor stalling occurs,please cut off the throttle or pop batteries out immediately.

4. Never use ESCs in high temperature environment. Being used at high temperature,ESCs might trigger Temperature Protection and get damaged.

5. Do not forget to cut off the connection of ESCs and batteries after use.

Adjustable Parameters

1.Startup power refers to the max. power allowed at startup stage,which can be any relative value from 0.031 to 1.5. Real power depends on input throttle,but the min.value cannot be lower than 1/4 of the max. power. In addition, startup power, which restricts the power of rotating direction change, shows its influence on bidirectional setting. In low RPM running. max power which can be adjusted via startup power parameters setting, is limited for BEMF voltage detection. In low RPM running (since from 16.1 version), low startup

power means low max.power.

2.Motor Timing. There are low, medium low, medium,medium high and high timing settings, and they are0°,7.5°,15°,22.5° and 30°. Generally, medium timing suits most of the requirements. In case of motor vibration,please try changing motor timing. It takes longer for high induction motors to demagnetize for direction change which leads to motor stalling or vibration on quick throttle increase. This phenomenon occurs especially at low RPM. High timing allows longer time for demagnetization,and thus helps to improve the above mentioned issue.

3.Demag.Compensation

Demag. compensation is meant to avoid motor stalling from long time wire demagnetization. High timing helps with that, however, it brings efficiency down. It begins to detect on demag. Compensation occurrence. When motor timing is unavailable, motor rotating direction will be changing according to motor timing estimate. Motor power will be cut off before a next direction change.Demag. compensation degree will be calculated. The severer demag. compensation is,the more power will be cut. When demag. compensation is on "OFF" mode, power won't be cut off. Technically, higher demag. compensation parameter means better protection. Nevertheless, if demag. compensation parameter is set too high,max.power drop slightly.

4.The direction of Motor direction can be normal, reversed,bidirectional and bidirectional reversed. In bidirectional mode, center throttle stands for null throttle. Throttle position above center one,motors rotate normally, otherwise, motors will rotate in a reversed direction. Bidirectional mode will invalid RC parameter setting.

5.Beep strength can be adjusted in compliance with normal operation.

6.Beacon Strength. ESCs will emit beacon beeps, once null throttle signal lasts for some time. Please note that high beacon strength brings heat to ESCs and motors.

7.Beacon Delay. This setting determines the delay in time before beacon beeps.

What Our Customers Say

January 28, 2026

Absolutely no complaints!

A truly exceptional item in a saturated market.

- Turlough R..

January 28, 2026

Absolutely no complaints!

A very solid and a very, very, very useful item.

- Math A..

January 28, 2026

Absolutely no complaints!

This is a very solid and a very, very, very clever tool.

- Rhiannon L..

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