t hobby at115a 6 14s esc

T-HOBBY AT115A 6-14S fixed wing Drone ESC

About T-HOBBY AT115A 6-14S fixed wing Drone ESC:

The T-HOBBY AT115A is a high-performance electronic speed controller designed specifically for fixed wing aircraft and high-voltage UAV platforms. Supporting 6–14S LiPo input, it delivers strong and stable power output for large airplane systems requiring reliable high-current performance.

Equipped with a built-in SBEC providing selectable voltage output, the AT115A ensures stable power delivery to onboard electronics such as receivers and servos. It also features multiple protection mechanisms including thermal protection, low-voltage protection, fail-safe, brake, and soft start functions, making it suitable for demanding flight environments.

Designed for professional fixed wing and VTOL applications, this ESC offers smooth throttle response and programmable parameters, giving pilots precise control and dependable performance in both sport and industrial UAV scenarios.

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AT(Fixed Wing Series) ESC Manual

DISCLAIMER
Thanks for purchasing our Electronic Speed Controller (ESC). Under strong power system, wrong operation for RC model will bring danger, please read this manual carefully and strictly comply with the rules of operating procedure. We assume no any liability for personal injury, property damage or consequential damages resulting from using our product in incorrect way or retrofitting our workmanship.
PRODUCT FEATURES
1.All devices are original made, ensuring that the ESC has high quality and high reliability.
2.Strong flow resistance.
3.Input voltage abnormal protection, battery low voltage protection, overheat protection, throttle signal loss protection and other Multi-protection functions.
4.Ordinary start, soft start, ultra-soft start modes, it is compatible with fixed-wing aircraft and helicopter.
5.The throttle range can be set and compatible with various transmitter. It has smooth feel and great linear for the speed control.
6.The highest speed can reach 210,000 RPM (2-pole motor), 70000 RPM (6-pole motor), 35000 RPM (12-pole motor).
PROGRAMMABLE ITEMS
(THE OPTION WRITTEN IN RED FONT IS THE DEFAULT SETTING)
1.Brace Setting: Disabled/Enabled.
2.Battery Type: Lipo/NiMH.
3.Low Voltage Protection Mode(Cut-Off Mode): limit power (Gradually reduce the output power)/Cut-Off (Immediately stop the output power).(Remark:When protected by low voltage, the motor can be restarted after the throttle rocker is pulled to the minimum throttle position, but because it is still at low voltage, the power output is small).
4.Low Voltage Protection Threshold: Low/Medium/High.
       (1)When the battery type is set to Lipo battery, the battery cell number can be judged by ESC automatically.
       Low / medium / high cutoff voltage for each cell is: 2.85V/3.15V/3.3V. For example: For a 3S Lipo, when “Medium” cutoff threshold is set, the cut-off voltage will be: 3.15*3=9.45V.
       (2)When the battery type is set to a NiMH battery, low / medium / high cutoff voltages are 0%/50%/65% of the startup voltage, and 0% means the low voltage cut-off function is disabled. For example: For a 6 cells NiMH battery, fully charged voltage is 1.44*6=8.64V, when “Medium” cut-off threshold is set, the cut-off voltage will be: 8.64*50%=4.32V.
5.Startup Mode: Normal/Soft/Super-Soft,The motor speed time from stationary to maximum is 300ms / 1.5s / 3s.Normal mode is suitable for fixed-wing aircraft. Soft or Super-soft modes are suitable for helicopters. The initial speed of the Soft and Super-Soft modes are slower, it takes 1.5 second for Soft startup or 3 seconds for Super-Soft startup from initial throttle advance to full throttle. If the throttle is completely closed (throttle stick moved to bottom position) and opened again (throttle stick moved to top position) within 3 seconds after the first startup, then it will be automatically switched to normal mode to avoid the chance of a crash caused by slow throttle response.
6.Timing: Low/Medium/High,( 3.75°/15°/26.25°)Usually, low timing is suitable for most motors. But as big difference of the motor structure,please try various timing to achieve the satisfactory drive.To improve the speed,high timing value can be set. After change the time,it is recommended to test on the ground before flying.

Specification

ModelCont
Current		Burst Current
(≤10s)		BEC ModeBEC Output
AT-20A20A25ALinear5V/2A
AT-30A30A40ALinear5V/2A
AT-40A-UBEC40A55ASwitch5V/3A
AT-55A-UBEC55A75ASwitch5V/5A
AT-75A-UBEC75A95ASwitch5V/5A
AT-115A-UBEC115A120ASwitch5.2V/6V/7.4V
10A/25A
BEC Output CapabilityBattery CellWeightSize
L*W*H
2S Lipo3S Lipo4S Lipo6S LipoLipoNiMH
5 servos4 servos

2–3S5–9 cells19g42*25*8
5 servos4 servos

2–3S5–9 cells37g68*25*8
5 servos5 servos5 servos
2–4S5–12 cells43g65*25*12
8 servos8 servos6 servos6 servos2–6S5–18 cells63g77*35*14
8 servos8 servos6 servos6 servos2–6S5–18 cells82g86*38*12
8 servos8 servos6 servos6 servos6–14S18–42 cells182g92*46*27.3

Begin To Use Your New ESC
IMPORTANT! Because different transmitter has different throttle range, please calibrate throttle range before flying. Throttle range setting (Throttle range should be reset whenever a new transmitter is being used).

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T-HOBBY AT115A 6-14S fixed wing Drone ESC Buying Guide

The T-HOBBY AT115A is designed for high-voltage, high-power fixed-wing systems. It makes the most sense when your aircraft needs more voltage and current capability than a conventional fixed-wing ESC can provide. Choose the AT115A when:

-Your power system uses a 6–14S LiPo battery

-Your motor requires a high-current ESC

-Your aircraft is relatively large or power-hungry

-You need reliable operation during sustained high-throttle flight

-Your application prioritizes power, efficiency, and stable operation over lightweight construction

If your aircraft uses a small motor and low-voltage battery, the AT115A is likely more ESC than you need.


6S, 8S, 12S or 14S: Which Voltage Should You Use?

Battery voltage should be selected based on the motor KV, required power, propeller size, and aircraft weight—not simply because the ESC supports a particular S count. A useful way to think about the choice is: Higher voltage → lower current for the same power → better suited to high-power systems


For example, if your aircraft requires substantial power, moving from a lower-voltage system to a higher-voltage setup can reduce the current required to produce the same output power. However, higher voltage also requires every component in the power system—including the motor, ESC, battery, connectors, and other electronics—to be voltage-compatible.


AT115A vs. AM66A: Which One Should You Choose?

Both are T-HOBBY fixed-wing ESCs, but they target very different power systems.


AM66AAT115A
Best for3D / aerobatic fixed wingHigh‑power fixed wing / UAV
Typical aircraft48–52" 3D aircraftLarger, higher‑power aircraft
Battery system3–6S6–14S
PriorityResponsive 3D performanceHigh‑voltage, high‑power operation
Choose it whenYou need a compact ESC for a 3D setupYou need a higher‑voltage, higher‑power ESC

Choose AM66A → 48–52" 3D or aerobatic aircraft with a 3–6S power system.

Choose AT115A → Larger or higher-power fixed-wing aircraft using a 6–14S power system.

Recommendations

Reviews
  • R*************J
    Verified

    I've used this in two different planes now. Zero issues, zero magic smoke. It just works, consistently and reliably. For the peace of mind it provides, it's worth every penny.

    Model：AT115A
  • E**************r
    Verified

    My go-to ESC for efficient mid-sized wings. Runs so cool and sips power, allowing me to maximize flight time. The setup was plug-and-play. Highly recommended for efficiency-focused builds.

    Model：AT115A
    Replied by MEPSKING:Maximizing flight time is the dream. We're glad it's helping you cruise longer!
  • T***********r
    Verified

    The build quality is impressive. Heavy-duty components, excellent soldering, and a massive heat sink. It inspires confidence for pushing high cell counts. A premium product.

    Model：AT115A
    Additional reviews after 53 days

    After several months of pushing it hard on 14S, it hasn't skipped a beat. It’s built like a tank.

    Replied by MEPSKING:We put a lot into the construction to handle those extreme setups. Thank you for the rigorous testing and feedback!
  • A***********r
    Verified

    Using on fixed wing build, installation was clean and throttle response is stable during flight.

    Model：AT115A
  • W********X
    Verified

    Instant throttle response and absolutely silent operation. Pushes my competition wing to its limits. The thermal management is excellent, even during back-to-back aggressive flights.

    Model：AT115A
    Replied by MEPSKING:Silent and responsive power is a great combo for racing. Good luck in your competitions!
  • A*********r
    Verified

    The wide voltage range (6-14S) is its biggest strength. It allowed me to experiment with different battery configurations on the same airframe without changing the ESC. Versatile and robust.

    Model：AT115A
    Replied by MEPSKING:The versatility is exactly the goal. Happy experimenting and flying!
  • L**************n
    Verified

    Perfect for my long-range 6S wing. The high voltage capability leaves room for growth, and the efficiency gains are noticeable. Flight times increased. A reliable powerhouse.

    Model：AT115A
    Additional reviews after 356 days

    After a year of weekend flying, it's still flawless. Has survived all conditions.

    Replied by MEPSKING:Fantastic to hear about the efficiency gains and reliability over the long term. Thank you for the trust!
  • W*********8
    Verified

    This ESC is a game-changer for my 10S fixed-wing setup. The power delivery is incredibly smooth and efficient. Handles 12S with ease and runs surprisingly cool. Top-notch build quality.

    Model：AT115A
    Replied by MEPSKING:Thrilled to hear it's elevating your 10S setup! Smooth power and cool temps are what we designed for. Enjoy!
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FAQ Feel free to ask us any questions
Q: What is the AT115A used for?
Q: What voltage does it support?
Q: Does it include BEC?
Q: Can it power servos directly?
Q: Is it suitable for FPV drones?
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