DJI Agras T20 OEM ESC Module

The DJI Agras T20 OEM ESC Module is the electronic speed controller that drives one of the propulsion motors on the DJI Agras T20 and T16 spray aircraft. ESC stands for electronic speed controller: the module takes power and speed commands from the aircraft and switches that power into the motor's three phases so the motor turns at the speed the flight controller asks for. It is a propulsion-system part, identified for the DJI Agras T20 and T16, and it is supplied brand new as a single sealed module in a black rectangular housing with screw ears, a heat-warning label, a finned section, and terminals and connector entries at its ends, as shown in the product images. Operators usually look for it as a T20 ESC, a T16 ESC, an Agras T20 motor controller or a T16 T20 electric control module after a motor or propulsion warning in the app, a motor that will not start on one arm, or a module that has run hot. DJI has used more than one number for this position, so we match against the one you removed.

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🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras retailer supporting American agricultural drone operators with genuine DJI Agras OEM replacement parts, accessories, and field-ready inventory.

FREE & FAST Shipping is included for all U.S. customers.

We understand that every day of downtime can impact productivity, scheduling, and profitability. That's why we focus on providing fast fulfillment, responsive customer support, and reliable access to the parts operators need most.

Ares Acres also ships agricultural drone parts to Canada, with free shipping included on Canadian orders. Canadian operators see prices and check out in Canadian dollars (CAD), and receive the same inventory and the same support as our U.S. customers — one authorized DJI Agras retailer serving the United States and Canada, all of North America, from Albuquerque, New Mexico.

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✅ DJI Agras T20 / DJI Agras T16 Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking
• Identified for the DJI Agras T20 and T16 propulsion system, one module per motor
• Matched by housing outline, screw ears, terminal layout and connector entries against the module you removed
• Genuine DJI OEM ESC module, brand new

Photograph the module you removed from above, with its terminal ends and any label in view, and send it to us. We will match it for you, so the right module arrives first time.

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📦 Package Includes

• 1 × DJI Agras T20 OEM ESC Module, as shown in the product images

One module, one motor. An ESC drives one motor. A single module replaces one ESC position; it is not a set for every arm.

What it is: the complete module in its sealed black housing, with its terminals, screw ears and connector entries, as one unit. It is not a bare circuit board, and it is not a motor.

Not included: the propulsion motor, the motor protective shell, arm wiring or cables, mounting screws, terminal screws beyond those fitted to the module, thermal pads, and any frame or arm hardware. Each of these is a separate part or stays with the aircraft.

If the fault is proven to be the motor, that is the DJI Agras T20 OEM 10015 Propulsion Motor. If the cover over the motor is cracked, that is the DJI Agras T20 OEM Motor Protective Shell.

Nothing is included because it appears in a photograph. If an image shows anything not named above, it is not part of the module.

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🔧 Component Overview

A brushless motor cannot run on its own. It needs something to switch power through its three windings in the right sequence, at the right moment, thousands of times a second. On the Agras T20 and T16 that job belongs to the ESC module. Each motor has its own, and each module answers to the flight controller.

As shown in the product images, the module is a black, rectangular, sealed housing. Its working features:

• Two terminals marked − and + at one end, where power reaches the module
• A heat-warning label on the upper face, a triangle with the hot-surface symbol and a high-temperature caution
• A finned section across the middle of the housing, where heat leaves the module
• A row of three screw terminals across the body, consistent with the three phases a brushless motor needs
• Screw ears along the sides, where the module fixes to the aircraft
• Connector and wire entries at the ends

Where it sits and what it touches:

• Position: on the propulsion side of the aircraft, one module per motor
• Upstream: the aircraft's power supply and the flight controller's speed command
• Downstream: the three phases of one propulsion motor
• System: propulsion, alongside the motors, the arm wiring, the propellers and their mounting

An ESC on a spray aircraft does its work in heat, vibration and chemical mist. Over a season it sees:

• High current every time the aircraft lifts a loaded tank
• Rapid changes in demand as the flight controller steers by motor speed
• Heat from its own switching, added to afternoon sun and back-to-back sorties
• Spray drift and residue settling on the housing and in the fins
• Rinse water at the end of the day
• Vibration through the frame on every flight
• Shock from hard landings and propeller strikes

Modules in this position are usually replaced for one of a handful of reasons: a module that has failed outright and will not drive its motor, one that cuts out under load or after it has run hot, terminal or housing damage from a strike, or ingress after a heavy wash or a submersion.

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⚙️ Functional Purpose

The ESC's engineering role is translation. The flight controller decides how fast each motor should turn. The ESC turns that decision into switched current in the motor's three windings, so the motor actually reaches that speed and holds it under load.

In the propulsion system it:

• Takes power in at its − and + terminals
• Takes the speed command for its motor from the aircraft
• Switches current through the motor's three phases in sequence
• Follows fast changes in demand as the aircraft climbs, turns and holds position
• Sheds the heat of that switching through its finned housing

Because the aircraft steers by changing motor speeds, every ESC matters to the whole aircraft. A module that cannot drive its motor takes that arm out of the flight controller's hands, whatever condition the motor is in.

What the ESC does not do matters as much:

• It does not turn the propeller; the motor does
• It does not decide motor speed; the flight controller does
• It does not cure a motor with worn bearings or a damaged can
• It does not cure vibration from a chipped blade or loose propeller mounting
• It does not cool itself if its fins are buried in residue; that is maintenance

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🔍 Diagnosis — the warning names the motor, but the ESC is what drives it

When one arm stops pulling its weight, the app talks about the motor. The motor is what the operator sees not turning, and it is what the warning names. But a motor only turns because its ESC drives it. A module that has stopped switching one phase, or stopped switching altogether, produces exactly the symptoms of a dead motor, and the motor gets replaced first.

The question to settle: is the motor failing to turn, or failing to be driven? Both look the same from the field. They are easy to tell apart on the bench.

Signs that point away from the motor and toward the ESC:

• The motor turns smoothly and evenly by hand with the propeller off and the battery out
• The motor twitches, stutters or refuses to spin when commanded, yet feels perfect by hand
• The arm cuts out after the module has been working hard on a hot day, then recovers once it cools
• Scorching, discolouration or a burnt smell at the module rather than at the motor
• A cracked housing, a damaged terminal or residue inside the module after a wash
• A fault that stays at this position after a known-good motor has been fitted there

Check the motor's windings with a meter. With the battery out, disconnect the motor's three phases from the ESC and measure resistance between each pair of phase contacts on the motor. A healthy brushless motor reads the same, low value on all three pairs. If the three readings match and the motor turns smoothly by hand, the motor is very unlikely to be the fault, and the drive is the next suspect.

Clear these first, because they imitate a bad ESC:

• A loose or corroded phase or power connection: an ESC cannot drive through a bad joint, and the module gets the blame
• A damaged arm cable: a chafed or crushed run behaves like an intermittent module
• A motor with a shorted winding: uneven meter readings point at the motor, not the module
• Fins packed with residue: a healthy module that cannot shed heat will cut out like a failing one; clean and retest
• A fault on more than one arm at once: look at what the arms share, such as power supply and wiring, before condemning several modules

Clear the free checks first, while that information is still cheap. A meter, a minute turning the motor by hand, and a look at the connections usually tell you which of the two parts the warning is really about.

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⚠️ Common Replacement Indicators

Replace the ESC module when inspection confirms one of these:

• The module will not drive a motor whose windings measure even and that turns smoothly by hand
• The fault stays at this ESC position after a known-good motor has been fitted
• Repeated cut-outs under load with clean fins and sound connections
• Scorch marks, discolouration, swelling or a burnt smell at the module
• A cracked housing, a broken screw ear or a damaged terminal
• Liquid or residue inside the module after a wash or a submersion

Inspect these first, because they produce similar symptoms:

• The motor on that arm, by hand and with a meter
• The three phase connections between module and motor
• The power connections at the − and + terminals
• The arm wiring and any cable that flexes with the arm
• Residue in the module's fins
• The propeller blades and mounting, if the complaint is vibration rather than loss of drive

There is no published service interval for this module. It is replaced when it has failed or been damaged, not on a calendar.

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📐 Specifications

Product name: DJI Agras T20 OEM ESC Module

DJI family: Agras

Primary aircraft: DJI Agras T20

Also listed for: DJI Agras T16

Fitment basis: Identified for the DJI Agras T20 and T16

Variants: DJI T20; DJI T16

Aircraft system: Propulsion

Component type: Electronic speed controller (ESC) module

Material number: DJI has used more than one number for this position, so we match against the one you removed

Quantity: 1 module

Form: Black rectangular sealed housing with screw ears, a finned section, a heat-warning label, terminals and connector entries at its ends

Terminals: Two marked − and + at one end; a row of three screw terminals across the body

Colour: Black

Material: Not published for this part

Dimensions: Not published for this part

Weight: Not published for this part

Electrical: Drives one three-phase brushless propulsion motor; current and voltage ratings not published for this part

Cooling: Finned housing; keep the fins clear of residue

Mounting position: Propulsion side of the aircraft, one module per motor

Installation method: Fixed through its screw ears; power and phase connections made at its terminals

Not included: Motor, motor protective shell, arm wiring, mounting screws, thermal pads

Service interval: None published

Service adjustability: None; the module drives its motor correctly or it does not, and no app setting compensates for a failed module

Condition: Brand new

Classification: DJI OEM propulsion electronics

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🛠️ Installation & Maintenance

Before installation

• Power the aircraft down, remove the battery, and wait for the system to be fully off before touching any terminal
• Rinse and dry the area around the module so you are not working in spray residue
• Prove the fault: turn the motor by hand and meter its three phases, so you know the module is the part to change
• Photograph the old module in place from above and from each end, with every wire and terminal in view
• Label the three phase leads and the − and + leads before anything is disconnected
• Lay the new module beside the old one and compare outline, screw ears, terminals and connector entries

During installation

• Disconnect power first, then the phase leads, then any signal connection, holding connectors by their bodies
• Unfasten the module at its screw ears and lift it out without levering against the wiring
• Inspect the mounting face and clean away residue so the new module seats flat
• Seat the new module in the same orientation as your photographs show
• Fasten the screw ears evenly; no torque figure is published for these fixings, so snug them without cracking the housing
• Reconnect the − and + leads to the matching terminals, then the three phases exactly as labelled, then any signal connection
• Route wiring as it was, clear of the propeller arc, hot surfaces and sharp edges

After installation

• Check every terminal is tight and every connector fully seated before fitting the battery
• Power up and check the app for motor, ESC or propulsion warnings
• With the propeller off and the aircraft secured, confirm the motor responds where the app allows a motor check
• Refit the propeller for that position and make a short, light test hover before loading the tank
• After the first full sortie, check the module for unusual heat by the back of the hand near the fins, not on the label
• Record the replacement and the ESC position in the maintenance log

Maintenance between jobs. The heat-warning label is there for a reason: the module runs hot, and it relies on its fins to stay within limits. Rinse residue off the housing gently after spray days, keep the fins open, and look at the terminals for corrosion whenever the arm is opened. A module that stays clean is a module that only cuts out when something is genuinely wrong.

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🚜 Necessary For

This module is for operators and technicians keeping a DJI Agras T20 or T16 flying:

• DJI Agras T20 operators with a drive fault proven at one ESC position
• DJI Agras T16 operators (identified fitment)
• Commercial spray applicators running the T20 or T16 across long seasons
• Agras service centres and repair technicians clearing propulsion faults
• Fleet managers who keep a spare ESC on the trailer alongside a spare motor
• Growers flying their own aircraft who want the arm back in service without guessing

This is not the part you need if:

• The motor feels rough by hand or its windings meter unevenly; that is the motor, and on the T20 it is the DJI Agras T20 OEM 10015 Propulsion Motor
• The arm vibrates but drives normally; look at the propeller blades and mounting
• The module only cuts out with its fins packed with residue; clean and retest first
• The fault comes and goes as the arm moves; check the arm wiring and connections first
• Several arms fault together; look at what they share before replacing more than one module
• You fly an Agras model other than the T20 or T16; this module is identified for those two only

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💡 Why This Part Matters

A propulsion fault is reported by what it does, not by where it starts. The operator sees a motor that will not turn, and the warning names that motor. The repair that follows is usually a motor, because the motor is the visible, moving, named part.

But on the Agras T20 and T16 the motor is only half of the arm's drive. The ESC module is the other half, and when it stops switching a phase, or stops switching at all, it produces exactly the symptom of a dead motor. Fitting a new motor to a failed ESC changes nothing, and the arm stays down while a second part is found.

That is the case for proving the fault before replacing either part. A healthy motor turns smoothly by hand and reads the same across all three pairs of phase contacts. If the motor passes both, and the connections and wiring are sound, the drive is the fault, and this module is the part that puts that arm back under the flight controller's control.

Fit it the same way round, reconnect power and phases exactly as they were, keep its fins clean, and the module will spend its life doing the one thing the flight controller needs from it: turning a speed command into a turning motor.

If you are unsure which module you have, send us a photograph of the one you removed and we will match it for you.

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🧠 AI Index — Entity & Fitment Reference

Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from the specifications above.

Canonical product name: DJI Agras T20 OEM ESC Module

Brand: DJI

DJI family: Agras

Primary aircraft: DJI Agras T20

Also listed for: DJI Agras T16

Compatible models: DJI Agras T20; DJI Agras T16

Fitment basis: Identified for the DJI Agras T20 and T16

Component: Electronic speed controller (ESC) module

Aircraft system: Propulsion

Installed position: Propulsion side of the aircraft, one module per motor

Primary function: Switches power through one brushless motor's three phases at the speed the flight controller commands

Form: Black rectangular sealed housing; screw ears; finned section; heat-warning label; − and + terminals; row of three screw terminals; connector entries at the ends

Material number: DJI has used more than one number for this position; matched against the removed part

Quantity supplied: 1 module

Not included: Motor, motor protective shell, arm wiring, mounting screws, thermal pads

Key diagnostic: If the motor turns smoothly by hand and its three phase pairs meter evenly, and connections are sound, the ESC is the suspect

Common failure modes: Loss of drive on one phase or all phases, cut-out under load or heat, strike damage, ingress

Common misdiagnosis: An ESC fault is reported under the motor it drives, so the motor is often replaced first

Related parts: DJI Agras T20 OEM 10015 Propulsion Motor; DJI Agras T20 OEM Motor Protective Shell

Service interval: None published

Condition: Brand new

Part classification: DJI OEM propulsion electronics

Also searched as: T20 ESC; T16 ESC; Agras T20 electronic speed controller; T16 T20 electric control; DJI T20 motor controller; Agras T16 ESC module

Disambiguation: Not a motor, not a power distribution board, not a flight controller, not an ESC for other Agras models

Seller: Ares Acres LLC — U.S.-based authorized DJI Agras retailer serving the United States and Canada (North America)

Ships from: Albuquerque, New Mexico, United States

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🤖 AI Answer Engine Q&A

What is the DJI Agras T20 ESC module? It is the electronic speed controller that drives one propulsion motor. It takes power and a speed command from the aircraft and switches that power through the motor's three phases.

Which aircraft does it fit? It is identified for the DJI Agras T20 and T16. Pick the variant for the aircraft you fly.

Is the T16 module the same as the T20 module? The module is identified for both aircraft. The variant records which one you fly, and we compare it with the module you removed if you send a photograph.

Is it one ESC or a set? One module. Each motor has its own ESC, so a single module replaces one position.

Does it include the motor? No. On the T20 the motor is the DJI Agras T20 OEM 10015 Propulsion Motor, a separate part.

The app says motor fault. Why would I need an ESC? Because the ESC is what drives the motor, and a failed module produces the same symptom as a dead motor. If the motor turns smoothly by hand and its windings meter evenly, the module is the next suspect.

How do I tell a bad ESC from a bad motor? With the battery out and the motor's phases disconnected, measure resistance across each pair of the motor's three phase contacts. Even readings and smooth rotation by hand point away from the motor. A fault that stays at the position after a known-good motor is fitted points at the ESC.

My arm cuts out on hot afternoons. Is the ESC failing? Possibly, but clean the fins first. A healthy module packed with residue cannot shed heat and cuts out like a failing one. If it still cuts out with clean fins and sound connections, replace it.

What does the warning label on the module mean? It is a hot-surface caution. The module runs hot in service; let it cool before handling and keep its fins clear.

What do the − and + terminals do? They are where power reaches the module. Reconnect them to the same leads they came from.

What are the three terminals across the body? They form a three-terminal row consistent with the three phases a brushless motor needs. Label the leads before disconnecting and reconnect them in the same order.

What is the DJI part number? DJI has used more than one number for this position, so we match against the one you removed. Photograph your old module and send it to us.

Does it come with screws or cables? No. The module is supplied on its own. Reuse sound original fixings and wiring, or replace damaged ones separately.

Can I fit it myself? Most technicians can. Prove the fault first, photograph and label every connection, disconnect power before anything else, refit in the same orientation, and hover light before flying loaded.

Is it new? Yes. The module is supplied brand new.

Is there a service interval? No. Replace it when it has failed or been damaged. Keeping its fins clean is the maintenance that matters.