Looking to buy an iFlight Defender 25 in Australia?
The iFlight Defender 25 is a 4S 2.5' Sub250 drone featuring the DJI O3 FPV Air Unit. After the success of the ProTek series, iFlight takes a step further for a better flying experience. Let's explore the Defender 25!
Choose your Receiver:
- TBS Crossfire
- ELRS 2.4GHz
- DJI BNF
VIDEO: Defender 25 | Fly Bold
Features
- Optimized landing gear for complex take - offs
- Built - in high - performance video and receiver antennas
- 4K stabilized video at 155° ultra - wide angle
- Crash - protected quick - release battery
- Many easy - to - use features
- Ultralight and fly - friendly
- Compact yet powerful
ULTRALIGHT AND FREE TO FLY
Weighing under 249g, it doesn't need registration in most countries. Its compact and light design makes it easy to carry and store, perfect for your FPV adventures.
SMALL AND MIGHTY
The built - in 2.5 - inch propeller guards let you fly boldly. It offers new creative freedom and protects your drone and the environment from minor mistakes.
4K STABILIZED VIDEO WITH 155° ULTRA - WIDE ANGLE
Equipped with the DJI O3 Air Unit HD system, it supports 4K video and 155° FOV. The D - Cinelike mode gives more color - grading freedom. A vibration - damped camera mount ensures smooth footage.
CRASH PROTECTED QUICK - RELEASE BATTERY
The new quick - release battery and adapter make things easy. It comes with a 4S 550mAh battery, and a 900mAh endurance battery is optional.
COUNTLESS EASY - TO - USE FEATURES
- Propellers with positioning column for easy install
- Mini camera mount for various cameras
- Secured XT30 battery plug with anti - spark filter
- Easy - to - access ports and buttons
- Motors with direction arrows
- Turtle Mode pre - setup
PRE - TUNED AND PRE - SETUP
This RTF is fully built and test - flown by iFlight technicians.
Specifications
- Max Hover Time: About 6 mins (550mAh), 10 mins (900mAh)
- Transmission Power: FCC < 33 dBm / CE < 14 dBm / SRRC < 30 dBm
- Operating Temp: - 10° to 40° C (14° to 104° F)
- Max Descent/Ascent Speed: 6 m/s (Normal/Sport)
- Max Wind Resistance: 80 Km/H (Level 5)
- Propellers: Defender25 2525 (2.5 inches)
- Takeoff Weight: ≤249g (550mAh), ≤280g (900mAh)
- Dimensions: 158x155x69mm
- Product Name: Defender25 O3 4S HD
- Max Speed: 100Km/H (Manual)
- Flight Electronics: BLITZ D25 F7 AIO
- Video Transmission: DJI O3 Air Unit
- Max Takeoff Altitude: 200 m
- Max Flight Distance: 2 - 3 km
- Aircraft Weight: 180g
- Antennas: Dual
- Motor: Defender25 1404
- Frame: 112±2mm
- GNSS: N/A
Recommended (Not Included)
- iFlight Defender 25 Battery - 900mAh
Includes
- 1x iFlight Defender 25 2.5' Sub250 Drone HD w/ DJI O3 - 4S (Pre - Built, Tuned, and Tested - Choose Receiver)
- 2x Flight Defender 2525 Propellers (Set of 4)
- 1x Flight Defender 2S Battery - 550mAh
- 1x Charging Adapter Board
Browse more
- Browse all BNF
- Browse all HD BNF
- Browse all iFlight





Using your iFlight Defender 25 is a breeze. First, choose your preferred receiver from the available options: TBS Crossfire, ELRS 2.4GHz, or DJI BNF. Next, install the propellers easily thanks to the positioning column. Connect the battery using the secured XT30 plug with an anti - spark filter. Before takeoff, make sure the drone is in an area free from obstacles. You can take off and fly in normal or sport mode, with a max ascent and descent speed of 6 m/s. The 4K stabilized video at a 155° ultra - wide angle will give you amazing visuals. You can also use the D - Cinelike color mode for creative color grading. When it comes to battery, you have a stock 4S 550mAh battery, and an optional 900mAh endurance battery. The quick - release battery and charging adapter make it easy to swap and charge. Remember, the drone weighs under 249g with the 550mAh battery, so in most countries, you don't need to register it. The operating temperature range is from - 10° to 40° C (14° to 104° F), so avoid flying in extreme temperatures. After each flight, check the propellers for any signs of damage. If the propeller guards show wear, consider replacing them. Keep the drone clean and store it in a dry place. If you're using the mini camera mount, make sure your camera is securely attached. Enjoy your flights with the iFlight Defender 25!