Racing set - 3x Air65 II Champion - 1S ELRS + charger and batteries

Racing set of 3x Air65 II Champion is equipment for indoor 1S Tinywhoop racing, such as the Czech Whoop League. It includes three identical BetaFPV Air65 II Champion drones with an ELRS receiver, a Vifly WhoopStor 3 charger for six 1S batteries, and a pack of five BetaFPV Lava II 320mAh batteries. Three identical drones with the same setup are practical during a race — if one drone is damaged, you continue with another one that flies exactly the same, without having to change settings or get used to different handling. The drones, batteries, and charger all use the same BT2.0 connector.

Air65 II Champion is the most powerful version of the Air65 II series, suitable for racing by experienced pilots. It is a 65mm Tinywhoop weighing only 16.6g without battery, achieving a 6.3:1 thrust-to-weight ratio thanks to the lightweight Air65 Champion frame (2.2g). The Matrix 1S 5IN1 II AIO board integrates a flight controller with an STM32G473 processor and 16MB blackbox memory, an ELRS receiver at 2.4GHz with a wire antenna, 12A ESCs running Bluejay firmware, and an analog video transmitter with OSD. ExpressLRS is an open-source RC system with low latency and a high refresh rate. The board is mounted at three points and features a reinforced 1mm PCB, making it more resistant to racing impacts. Power is provided by BetaFPV 0702 36000Kv motors with double ball bearings combined with Gemfan 1207-3 tri-blade propellers. To save weight, the motors are soldered directly to the board rather than connected via connectors.

Video is handled by a C03 camera with 1200TVL resolution, a 4:3 aspect ratio, and 160° FOV, mounted in a durable Air II Canopy with an adjustable camera angle of 15-45°. The video transmitter has adjustable output power of 25/100/200/400mW and 48 channels, including the Raceband band used for simultaneous flights by multiple pilots during races. Channel and output power are set via SmartAudio directly from the OSD or radio transmitter. Czech Whoop League rules limit video transmitter output power to 25mW and require active failsafe, so we recommend checking both before technical inspection.

BetaFPV Lava II 320mAh 1S batteries are LiHV type with a maximum voltage of 4.35V, a 95C discharge rating, and a weight of 8.2g. Z-Folding technology reduces the cell's internal resistance, so voltage drops less under load and performance remains consistent throughout the flight.

The Vifly WhoopStor 3 charger has six independent channels, each with both a BT2.0 and PH2.0 connector (only one battery can be connected to each channel at a time). It charges LiPo batteries to 4.2V and LiHV batteries to 4.35V at 0.3-1.3A per channel, and can charge or discharge batteries to a storage voltage of 3.80V / 3.85V. The colour LCD display shows the voltage of each battery, a buzzer signals the end of charging, and the charger remembers the last settings. It is powered via XT60 or a 5.5x2.1mm DC connector at 6-26V (2-6S battery or power supply), or via USB-C PD at 9-20V. The power supply must provide at least 40W; a standard 5V USB adapter is not sufficient. The power supply and power battery are not included in the set.

The set does not include an RC radio transmitter or FPV goggles. The drones bind with an ELRS 2.4GHz radio transmitter, and video is received by analog 5.8GHz FPV goggles.

Guidelines for safe use of LiPo batteries