BETAFPV Air75 Brushless Whoop Quadcopter – Complete Buyer’s Guide & Review

The BETAFPV Air75 is a next-generation brushless whoop quadcopter engineered for indoor freestyle, racing, and training. Designed with precision for agility, longer flight time, and ultra-light performance, it stands out in the micro FPV category. Featuring ExpressLRS (ELRS) connectivity, an advanced F4 flight controller, and powerful 1102 motors, the Air75 is ideal for both beginners and pro-level indoor pilots.

✅ BETAFPV Air75: Key Features That Make It a Game-Changer

Ultra-Light 75mm Frame with Ducted Prop Protection

The Air75 is built around a strong yet lightweight 75mm frame with durable ducts, making it highly resistant to crashes and ideal for flying in tight indoor spaces. It weighs only 23.5g without battery, making it one of the lightest brushless whoops in its class.

• Wheelbase: 75mm

• Prop Size: 40mm 2-blade

• Weight (with battery): ~29g

• Build Material: Polycarbonate + Carbon-reinforced parts

Note: BETAFPV is immensely grateful to this testing team including ”Don Johnson, Tokyo_Dom, BLACKHORSE, wKich, Travis, Coitti FPV, Tdog, Anthony Knight, Issac, Albert, sub250g, Wk Breeze” for valuable ideas in the design of this Air75.

Bullet Point

• Experience a New Level of Lightweight flying with our 1S 75mm Indoor Whoop. Weighing in at just 21g, it offers an exhilarating and agile flying experience.
• Air Brushless Flight Controller(4IN1) is the first 1S FC that uses the G473 processor which has superior computing power and is equipped with ICM42688P gyroscope, This all-in-one solution seamlessly integrates FC, ESC, OSD, and Onboard 5.8G 25mw~400mw VTX. and even offers an optional ELRS receiver, weighing only 2.9g.
• For a smooth and elegant free flight experience, the Air75 features the Gemfan 40mm 2-Blade Props and 0802SE | 23000KV Motor, allowing for timely responses and precise follow-up actions for incredible speed bursts and agile steering.
• Discover the Air75, accompanied by the Z-Folding LAVA 1S 450mAh 75C Battery, enabling the ultimate lightweight flight experience. Take to the skies with unparalleled agility and weightlessness.
• Express your unique style with various part options. From 75mm frames to canopies and propellers, offering pilots a diverse selection of captivating colors. Combine with BETAFPV waterslide decals to effortlessly infuse your whoop drones with a personalized.

Specification

• Item: Air75 Brushless Whoop Quadcopter
• Weight: 21g
• Wheelbase: 75mm
• Frame: Air75
• Canopy: Air Canopy
• FC & ESC: Air Brushless Flight Controller(4IN1 Version)
• VTX: Onboard 5.8G 25mw~400mw VTX
• Camera: C03 Camera
• Motor: 0802SE | 23000KV
• Props:  Gemfan 40mm 2-Blade
• Battery Connector: BT2.0 U Cable Pigtail
• Recommend Battery: LAVA 1S 450mAh 75C
• Flight Time(4.35v-3.3v): 6.5min
• RX Version: External ELRS 2.4G Lite / TBS (Included in quad)

Comparison Air75 & Meteor75

	Air75	Meteor75
Weight	21.0g	24.9g
Wheelbase	75mm	75mm
Frame	Air75	Meteor75 Micro Frame
Canopy	Air Canopy	Canopy for Micro Camera 2022
FC & ESC	Air Brushless Flight Controller(4NI1 Version)	F4 1S 5A FC (Serial ELRS 2.4G) F4 1S 5A FC (SPI Frsky)
VTX	Onboard 5.8G 25mw~400mw VTX	M03 VTX
Camera	C03 Camera	C03 Camera
Motor	0802SE | 23000KV	0802SE | 19500KV
Props	Gemfan 40mm 2-Blade	Gemfan 40mm 2-Blade
Battery Connector	BT2.0 U Cable Pigtail	BT2.0
Recommend Battery	LAVA 1S 450mAh 75C	BT2.0 450mAh 30C LAVA 1S 450mAh 75C
Flight Time 4.35v-3.3v	6.5min	4.5min(Freestyle) / 6min
RX Version	External ELRS 2.4G Lite / TBS	ELRS/Frsky/TBS

 

Flight Controller & ESC

The first 1S FC that uses the G473 processor, Air Brushless Flight Controller(4IN1) with balanced performance and lightness, only 2.9g. Powered and Industry-leading ICM42688P gyroscope, powering superior computing power and lightning-fast response times for precise flight execution compared to the F411. With multiple UART port options, it supports various function expansions. This all-in-one solution seamlessly integrates FC, ESC, OSD, and VTX, and even offers an optional ELRS receiver. The micro-sized OSD chip is customed. Immerse yourself effortlessly in the racing and freestyle world of Finger-Tip control, where unparalleled precision and responsiveness of the Air75 await.

Upgraded Air Canopy

Experience high-quality, clear, and sharper images with the lightweight C03 FPV Micro Camera, weighing just 1.45g. We’ve redesigned the Air Canopy structure to be more flexible, impact-resistant, and durable. The improved bending effect enhances flexibility, reduces the chances of breakage, and greatly enhances explosion resistance for easier installation. Effortlessly accommodates an assortment of Micro and Nano Analog cameras. Supporting angle adjustment from 25° to 50°. With it, Air75 can chase the limit of racing victory worry less.

Propulsion System

For a smooth and elegant free flight experience, the Air75 features the Gemfan 40mm 2-Blade Props, a larger pitch tip of the props, quick response, and crisp action, and0802SE | 23000KV Motor, allowing for timely responses and precise follow-up actions for incredible speed bursts and agile steering. Equipped with the ultralight LAVA 1S 450mAh 75C Battery that features the groundbreaking Z-Folding Process for the Air75 more concentrated center gravity, crisper response, greater acceleration, and enhanced maneuverability.

Air75 Frame

To enhance the flying experience, DIY enthusiasts have diligently worked on reducing the weight of the 75mm whoop drones, especially frames for an ultra-light structure. We upgraded the Meteor75 Micro Frame to the Air75 Frame, which achieves a remarkable weight lighter from 5.68g to 4.45g. It maintains exceptional strength and durability while introducing a new motor fixed slot, and optimizing a low-profile design. Having 8 color choices, it indisputably emerges as the top topgallant choice for pilots seeking an unparalleled ultra-light Sub20g 75mm 1S Whoop drone and personality.

Recommended Parts

• Radio Transmitter: LiteRadio 3 Pro, LiteRadio 3, LiteRadio 2 SE
• Goggles: VR03 FPV Goggles, VR02 FPV Goggles
• FC: Air Brushless Flight Controller(4IN1)
• Receiver: ELRS Lite Receiver, ELRS Nano Receiver
• Battery: LAVA 1S 450mAh 75C Battery
• Props: Gemfan 40mm 2-Blade Props
• Colorful Frame: Air75 Brushless Whoop Frame
• Colorful Canopy: Air Canopy
• Screws: Meteor Series Motor Fixing Screws Pack (40PCS)
• Sticker: BETAFPV Waterslide Decals

FAQ

• Download the CLI and Firmware for the Air75 Brushless Whoop Quadcopter

Package

• 1 * Air75 Brushless Whoop Quadcopter
• 1 * Air Canopy
• 4 * Gemfan 40mm 2-Blade Propellers
• 1 * Pack of Screws
• 1 * 4Pin Adapter Cable
• 1 * USB Type-C Adapter Board

📡 ELRS 2.4GHz Receiver – Next-Gen Control System

The Air75 comes pre-installed with a UART-based ExpressLRS (ELRS) 2.4GHz receiver for unmatched signal stability and long-range indoor flight. With a binding phrase system and support for dynamic packet rates, it outperforms traditional SPI-based micro drones.

ExpressLRS 2.4GHz Benefits:

• Low latency: As low as 2.5ms

• Secure binding via phrase

• Better penetration through walls

• Compatible with all ELRS TX modules (RadioMaster, BetaFPV, etc.)

⚙️ F4 Flight Controller + 12A 4-in-1 ESC Integration

The onboard F4 1S 12A AIO flight controller is built for high-speed indoor racing and freestyle. The integrated 12A BLHeli_S ESCs deliver superior current handling, enabling dynamic throttle response and powerful punch-outs with 1102 motors.

Flight Controller Specs:

• MCU: STM32F411

• Gyroscope: BMI270

• ESC: BLHeli_S 12A

• UART Ports: 2 (one reserved for ELRS)

• FC Firmware Target: BETAFPVF4SX1280

🌀 1102 18000KV Brushless Motors – Small Size, Big Power

The quad is equipped with 1102 18000KV motors, optimized for high torque and explosive takeoff within confined spaces. Paired with 40mm props, these motors make every flick, roll, and powerloop ultra-smooth and responsive.

• Motor KV: 18000KV

• Stator Size: 1102

• Prop Mount: Press-fit

• Recommended Battery: 1S 450–550mAh HV

📹 FPV Camera + VTX – Clear, Real-Time Video Feed

The built-in C02 FPV camera paired with a 25mW VTX ensures crisp video transmission and minimal latency. The analog feed is tuned for racing-grade performance with wide FOV and accurate color reproduction.

• Camera: 600TVL CMOS

• FOV: 120°

• VTX Power: 25mW

• Channels: 40CH (Raceband included)

🔋 Battery and Flight Time

Optimized for use with BT2.0 450mAh or 550mAh 1S batteries, the Air75 delivers an impressive 5 to 6 minutes of flight time under normal conditions. The BT2.0 connector ensures reduced internal resistance and improved voltage retention over PH2.0.

Recommended Battery Specs:

• Voltage: 3.8V HV

• Capacity: 450mAh–550mAh

• Connector: BT2.0

• Discharge Rating: 30C–40C

✈️ Flight Modes & Performance

Pre-flashed with Betaflight, the Air75 supports multiple flight modes:

• Angle Mode: Great for beginners

• Horizon Mode: For stable freestyle

• Acro Mode: Full manual for experienced pilots

• Turtle Mode: Flip over after crash using motors

The lightweight frame and responsive motors make tight turns, quick flips, and proximity flying a breeze.

📦 What’s Included in the Air75 Package?

• 1x BETAFPV Air75 Quadcopter

• 1x 1S 450mAh BT2.0 Battery

• 1x USB Charger

• 1x Spare Prop Set

• 1x Screwdriver

• 1x Instruction Manual

📊 Air75 Technical Specifications Table

Understanding the Causes of LiPo Battery Failure in FPV Drones

LiPo (Lithium Polymer) batteries are the lifeblood of FPV drones, powering everything from the motors to the electronics that enable your quadcopter to soar through the skies. While these batteries are essential for high-performance flying, they are also delicate and prone to failure or premature death if not handled correctly. In this article, we’ll explore the various causes of LiPo battery failure, helping you to extend the lifespan of your batteries and ensure consistent performance during your flights.

1. Overcharging and Overvoltage

One of the most common causes of LiPo battery failure is overcharging. Charging a LiPo battery beyond its maximum voltage—typically 4.2V per cell—can cause significant damage. Overcharging can lead to the swelling of the battery cells, increased internal resistance, and, in extreme cases, thermal runaway, which can result in fire or explosion.

• Prevention: Always use a quality balance charger with built-in safety features to prevent overcharging. Ensure that you never exceed the recommended charge voltage for your specific LiPo battery.

2. Overdischarging

Overdischarging occurs when a LiPo battery is drained below its safe minimum voltage, typically around 3.0V per cell. Discharging a battery too low can cause irreversible chemical changes within the cells, leading to a loss of capacity, increased internal resistance, and eventual failure.

• Prevention: Use a low-voltage alarm or set your drone’s flight controller to warn you when the voltage drops below a safe threshold. It’s also advisable to land your drone as soon as the voltage drops to around 3.5V per cell under load, giving you a buffer to avoid overdischarge.

3. Physical Damage

LiPo batteries are particularly vulnerable to physical damage, which can occur due to crashes, punctures, or rough handling. Any damage to the battery casing can lead to exposure of the internal cells, which may result in swelling, leakage, or short circuits.

• Prevention: Always inspect your batteries after a crash or rough landing. If you notice any dents, swelling, or other signs of damage, it’s best to safely dispose of the battery rather than risk using it. Protect your batteries with soft cases or padding during transport and in your drone.

4. High Current Draw

FPV drones, especially those built for racing or freestyle flying, often draw high currents from their batteries. While LiPo batteries are designed to handle high current loads, drawing excessive current for extended periods can cause overheating, swelling, and a decrease in battery lifespan.

• Prevention: Ensure that your battery’s C-rating (the measure of how much current the battery can safely deliver) matches the demands of your drone’s setup. Avoid pushing your batteries to their limits during every flight, and consider using batteries with a higher C-rating for demanding flying styles.

5. Improper Storage

Improper storage is a major factor in the premature aging of LiPo batteries. Storing LiPo batteries fully charged or fully discharged for extended periods can cause capacity loss and increase the risk of swelling.

• Prevention: Store your LiPo batteries at a storage voltage of around 3.7V to 3.85V per cell. Use a balance charger’s storage mode to set your batteries to the correct voltage before storing them in a cool, dry place. Avoid storing batteries in hot environments, such as inside a car or near direct sunlight.

6. Poor Charging Practices

Charging LiPo batteries improperly can lead to a range of issues, from reduced capacity to complete failure. Using incorrect settings on your charger, charging at too high or too low a current, or using a damaged charger can all contribute to battery failure.

• Prevention: Always double-check your charger settings before plugging in your batteries. Charge your batteries at a moderate rate (typically 1C, where C is the battery’s capacity) unless you’re confident that a faster charge won’t harm the battery. Regularly inspect your charger for wear and tear, and replace any damaged components.

7. Environmental Factors

Environmental conditions such as extreme temperatures, humidity, and exposure to water can also lead to LiPo battery failure. High temperatures can cause the battery cells to swell, while cold temperatures can reduce capacity and increase internal resistance. Exposure to moisture can lead to short circuits and corrosion.

• Prevention: Fly and store your batteries within their recommended temperature ranges. Keep them dry, and avoid flying in rainy or excessively humid conditions. If you suspect that a battery has been exposed to moisture, allow it to dry thoroughly before use, but be cautious as the internal damage may have already occurred.

8. Age and Usage Cycles

Even with the best care, LiPo batteries have a finite lifespan. Over time and through repeated charge/discharge cycles, the chemical composition of the cells degrades, leading to reduced capacity, increased internal resistance, and eventually, failure.

• Prevention: Monitor the performance of your batteries regularly. If you notice a significant drop in flight time or increased swelling, it may be time to retire the battery. Keeping a log of your battery usage can help you track the number of cycles and predict when a battery is nearing the end of its useful life.

Read More About Lipo Batteries by clicking the link below:
https://oscarliang.com/fpv-drone-guide/

Checkout our Frames Collection by clicking the link below:
https://thefpvproject.com/product-category/frames/

1S = 1 cell  = 3.7V
2S = 2 cells = 7.4V
3S = 3 cells = 11.1V
4S = 4 cells = 14.8V
5S = 5 cells = 18.5V
6S = 6 cells = 22.2V

For example, we call a 14.8V battery a “4-cell” or “4S” battery.

LiPo battery is designed to operate within a safe voltage range, from 3V to 4.2V. Discharging below 3V could cause irreversible performance loss and even damage to the battery. Overcharging above 4.2V could be dangerous and eventually cause a fire.

However, it’s advisable to stop discharging when it reaches 3.5V for battery health reasons. For example for a 3S Lipo, the max voltage is 12.6V, and you should land when the voltage reaches 10.5V (at 3.5V per cell).