Defender 20 3S HD

Cine Defender 20 Indoor Defender BNF
$419.99 Price drop reminder
Receiver Option
No additional receiver, I use DJI FPV Remote Controller 2/3
iFlight ELRS 868/900MHz RX
iFlight ELRS 2.4GHz Nano RX
TBS Crossfire NANO RX

Defender 20 3S HD

No additional receiver, I use DJI FPV Remote Controller 2/3

Defender 20 3S HD ×1
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$419.99
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$419.99 No additional receiver, I use DJI FPV Remote Controller 2/3

In The Box

Defender 20
x 1
Defender 20 900mAh Battery
x 1
Charging Adapter
x 1
Defender 20 Carrying Case
x 1
Descriptions

iFlight Defender series features a better flying experience and performance with the next upcoming innovative step. Now is the time to take a step forward, let's meet the Defender 20. With the integrated All-In-One design and extremely convenient user experience, the new Defender has created a new standard of FPV drones. Upgraded quick-release battery and charging adapter to support Type C fast charging and battery storage mode, making everything as easy as it can be. One-button power switch with inbuilt programmable RGB light, yes we can be stylish and functional.

Highlights

Remarkably Lightweight And Portable

The palm-sized, compact Defender 20 is just as portable as it can be. The whole frame is injection molded for durability and lightweight, equipped with a naked DJI O3 air unit (Supplied by DJI). It's not only regulation-friendly, but also the safest in its series, allowing you to fly anywhere and whenever.

One-button Functional Power Switch

Better operation through one physical button, not only just power on and off but also inbuilt programmable RGB light colors and modes to visually display the battery power. We’ve added a protective circuit to extend the lifespan of the battery connector and prevent rapid voltage or current spikes which can protect your electronics from damage.

Innovative Quick-Release Battery with Type-C Charger

The Defender 20 comes with a stock 3S 900mAh providing up to 7min flight time. Crash protected battery shell and innovative quick-release structure for easy replacement. Upgraded plug and play Type-C charger for user-friendly fast charging, get 80% charge in just 18 minutes. The battery has an inbuilt auto-discharge module, it will discharge itself when not in use, making it safe and worry-free.

Extremely Convenient User Experience

No fear of dust, take off boldly. By using dustproof port plugs to isolate the interface from the outside, ensure function properly. Extend the life of the interface.

The drone can be disassembled with only 6 screws, making it much more convenient for maintenance and repair.

Full plug and play high performance AIO, 30% increase in redundancy to cope with extreme operations. Integrated beeper for quick retrieval of accidental loss.

All ports and buttons are easy to access.

Countless easy-to-use features let you get started right away. 

1) No soldering is required for the whole drone, motors, and propellers adopting the plug-in mounting method. 

2) A dedicated VTX mount bracket with a central grille opening, together with the air duct design in the drone, can dissipate heat when flying.

3) USER1 preset as video transmitter power supply switch, used to manually turn off the VTX when idle to safe power and prevent overheating. 

4) Customized vibration damped O3 camera mount to keep your raw footage as smooth as possible, as well as ensure good Gyro Data for the in-built or in-post camera stabilization, jello free.

Specifications

Product Name: Defender 20 O3 3S HD

Flight Electronics: Defender 16/20 F411 AIO

Video Transmission: DJI O3 Air Unit (Naked version)

Frame wheelbase: 97mm

Motor: Defender20 1204 motors

Prop: Defender20 2020-3 props

Weight: 178±5g

Takeoff Weight: Approx. 247±5g (With 900mAh Battery)

Dimensions (L×W×H): 135x136x52mm

Max Speed: 75km/h (Manual Mode)

Maximum Takeoff Altitude: 2000 m

Max Hover Time: Approx. 7.5 min(with 3S 900mAh battery)

Operating Temperature Range: -10° to 40° C (14° to 104° F)

Antennas: Dual Antennas

GNSS: N/A

Video Transmission

Product Name: Naked DJI O3 Air Unit

Communication Bandwidth: Max 40 MHz

FOV (single screen): 155°

Communication Frequency: 2.400-2.4835 GHz (RX only);5.725-5.850 GHz(RX and TX)

End-to-End Latency

With DJI FPV Goggles V2:

810p/120fps Video Transmission Quality: The latency is lower than 28 ms.

810p/60fps Video Transmission Quality: The latency is lower than 40 ms.

With DJI Goggles 2:

1080p/100fps Video Transmission Quality: The latency is as low as 30 ms.

1080p/60fps Video Transmission Quality: The latency is as low as 40 ms.

Max Video Transmission Bitrate: 50 Mbps

Max Video Transmission Range:10 km (FCC), 2 km (CE), 6 km (SRRC)

Operating Temperature Range: -10º to 40º C (14° to 104° F)

Power Input: 7.4-26.4 V 

Audio Transmission: N/A

Recommended Charger

Charger not included in combos, and sold separately. 

To ensure charging speed, it is recommended to use Flight PD 100W Charger or PD 30W Charger, or other USB chargers that support USB PD and QC fast charging protocols.

Packing List

1 x Defender 20 O3 HD BNF

1 x Defender 20 3S 900mAh Battery

1 x Charging Adapter

4 x Defender 2020-3 Props (pairs)

1 x Propeller Removal Tool

1 x Defender 20 Carrying Case

Note

1. iFlight product is for fun purposes only and does not support autonomous flight.

2. iFlight products may be used for civilian purposes only and any direct or indirect use of iFlight products for or in connection with the following is prohibited:

(1) Any military combat purpose or military combat related use;  

(2) Terrorist activities: The purchaser also shall require its customers or end users to comply with the foregoing requirements.

3. iFlight Partners must strictly adhere to applicable export control and sanction laws as well as any written compliance requirements regarding these controls issued by iFlight from time to time.

If Party A has violated applicable export control or economic sanctions laws and regulations, Party B has the right to immediately suspend delivery of products to Party A or terminate relevant cooperation without any liability.

For more specific content, please check: https://shop.iflight.com/Export-Policy-info

Customer: Are the frames and electronics of Defender 20 Lite and Defender 20 compatible?
2025-03-24 15:46:43
Answer:

Due to differences in design and structure, they are not compatible.

 -------iFlight Support Team

Customer: Does Defender 20 Lite support the installation of GPS?
2025-03-24 15:43:03
Answer:

Due to the limited installation space and the application of short-distance flight scenarios, Defender 20 Lite does not support the installation of GPS

 -------iFlight Support Team

Customer: What are the main differences between Defender 20 Lite and Defender 20?
2025-03-24 15:30:11
Answer:

1. AIR UNIT system: Compared with the O3 AIR UNIT used in Defender 20, the Lite version uses the latest DJI O4 Air Unit

2. Takeoff weight: Compared with the 247g of Defender 20, the takeoff weight of the Lite version is only 108g, which is much lighter and more flexible

3. Battery: Compared with the 3S 900mAh battery used in Defender 20, the Lite version uses a 2S 600mAh battery

 -------iFlight Support Team

Customer: Compared with iFlight ELRS RX, what are the differences of iFlight ELRS Nano RX?
2023-12-07 17:30:40
Answer:

1. iFlight Nano RX is smaller and lighter, easy to install

2. iFlight Nano RX use TCXO (Temperature Compensated Crystal Oscillator), which can improve the frequency-error problem and is not affected by temperature 

                                                                                                                                                                                                                              ---------iFlight Support Team    

Customer: Can ELRS from different manufacturers be used in common?
2023-09-20 16:19:25
Answer:

ELRS RX and TX from different manufacturers can be used together, but different degrees of Oscillator (XO) Frequency Error may occur. Therefore We recommend using ELRS TX and Rx from the same manufacturer. Please check: https://www.expresslrs. org/hardware/crystal-frequency-error/

                                                        ——iFlight Support Team

Customer: What is the function of the Automatic Discharge Module?
2023-08-22 16:26:49
Answer:

It will automatically power off after fully charged. If there is no usage record within 72 hours, it will automatically discharge to 3.9V and store the voltage to avoid battery performance degradation or damage caused by prolonged full charge voltage.

                                        ——Team iFlight

Customer: How long does it take to fully charge?
2023-08-22 15:52:18
Answer:

It takes about 20-30 minutes from no power to full charge. ——Team iFlight

Customer: Why is the DJI O3 Air Unit used by Defender16 and Defender 20 different from other O3 drones? Will it affect performance?
2023-08-22 15:50:14
Answer:

Customized DJI O3 Lite is an official naked version supplied by DJI. Defender16 and Defender 20 use the naked DJI O3 Air Unit to reduce weight, equipped with a dedicated mounting mount. 

Customer: Can Defender 16 and Defender 20 batteries be used in common?
2023-08-22 15:08:40
Answer: The Defender 16 and Defender 20 batteries are different sizes and cannot be used in common.——Team iFlight
Customer: Whether Defender 16 and Defender 20 are equipped with GPS?
2023-08-22 15:00:10
Answer:

Due to space constraints on the Defender 16 and Defender 20, not equipped with GPS——Team iFlight

Marek: What is the default tune for this build? I erased everything and want to get the factory tuning in.
2023-04-24 16:38:28
Answer: Use the preset in betaflight to recover the default setup The steps to use the preset is shown in the video: BF4.3:https://youtu.be/KB0bGmD8rqQ——iFlight Support Team
Customer: "iFlight ELRS 2.4 Ghz/868/900MHz receiver" , does it mean this receiver works only with Commando 8 transmitter?
2022-12-06 16:41:05
Answer:

This receiver is compatible with remote controllers which have ELRS 2.4G/868/900MHz hardware, not only compatible with our commando8 radio.

                                    ——iFlight Support Team

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