Tattu R-Line 550mAh 2S – high-discharge LiPo battery for compact FPV drones

Tattu R-Line 550mAh 2S is a compact and lightweight LiPo battery designed for high-performance FPV drones. Its 550mAh capacity, 2S configuration, 7.4V nominal voltage and 95C discharge rate provide powerful performance for rapid acceleration, sharp manoeuvres and demanding freestyle or racing flights.

Equipped with an XT30 power connector, this battery is primarily suitable for 100–180 mm multirotors, 3-inch toothpick-style drones and other compact FPV platforms that support 2S LiPo batteries. An elongated body, weight of approximately 33 grams and high discharge capability make it a practical choice for drones where a good balance between performance, flight time and total weight is essential.

2S LiPo battery with a 7.4V nominal voltage

Tattu R-Line 550mAh 2S uses two LiPo cells connected in series, forming a 2S1P configuration. Battery has a nominal voltage of 7.4V and a minimum capacity of 550mAh. This combination is suitable for small FPV drones that require more power than a 1S battery can provide but are not designed to carry larger and heavier battery packs.

Before connecting the battery, check that your drone’s flight controller, electronic speed controllers, motors and other components support 2S input voltage. Battery must also fit securely in the drone’s battery mount, while its weight should be suitable for the frame and power system being used.

95C discharge rate for demanding FPV flights

A 95C discharge rate allows the battery to deliver current rapidly when motors are under heavy load. This helps maintain responsive throttle performance during acceleration, direction changes and other dynamic manoeuvres where a battery with a lower discharge capability may experience a greater voltage drop under load.

High discharge performance makes Tattu R-Line 550mAh 2S suitable for FPV racing, freestyle flying and other applications where rapid and precise power delivery is important. Actual performance and flight time depend on drone weight, motors, propellers, tuning, flying style and environmental conditions.

Compact and lightweight construction

Tattu R-Line 550mAh 2S measures approximately 81 × 17.5 × 13 mm and has a net weight of around 33 grams. Its elongated body is well suited to drones with a battery mount designed for narrower and longer battery packs.

Low weight helps limit overall drone mass and preserve agility. At the same time, 550mAh capacity provides a practical energy reserve for training flights, racing and freestyle flying. Before purchasing, compare battery dimensions with your drone’s battery compartment or mounting strap, as mounting solutions may differ even between FPV drones in the same size class.

XT30 power connector and balance connector

Battery is equipped with an XT30 connector commonly used on small and medium-power FPV drones. XT30 provides a compact connection and is better suited to higher current demands than connectors typically used with smaller 1S batteries.

For balanced cell charging, battery features a JST-XHR-3P balance connector. Tattu R-Line 550mAh 2S must be charged with a balance charger suitable for 2S LiPo batteries. Always check charger settings, connector compatibility and polarity before connecting the battery.

R-Line series for FPV racing

Tattu R-Line is a battery series developed around the requirements of professional FPV racing. It is designed to provide high discharge performance, low internal resistance and stable power delivery in situations where a large amount of energy must be supplied within a short period.

Tattu uses high-energy-density lithium-polymer cells and specialised cell-stacking technology in its battery construction. The result is a compact battery with a 550mAh capacity that is well suited to small, performance-oriented FPV drones.

Compatibility with compact FPV drones

Manufacturer recommends this battery for 100–180 mm multirotors, including 3-inch toothpick-style drones and compatible Tiny Whoop-class platforms. It may also suit other custom-built or ready-to-fly FPV drones, provided their power systems support 2S voltage, an XT30 connector, and the battery’s dimensions and weight.

Checking the connector alone is not enough to confirm compatibility. Drone’s permitted battery voltage, recommended capacity, battery mount dimensions, centre of gravity and motor-propeller combination must also be considered. A battery that is too heavy or does not fit correctly may affect handling and place additional strain on the power system.

Correct LiPo battery use and storage

A LiPo battery must be used with a compatible charger and correct charging settings. Never leave the battery unattended while charging, and use a heat-resistant surface or LiPo safety bag. Do not continue using a battery that is damaged, swollen or becomes unusually hot.

Avoiding excessive discharge and storing the battery in a cool, dry place can help extend its service life. Inspect battery casing, wires and connectors before every flight. If the drone’s voltage warning indicates a low battery level, end the flight promptly to prevent cell damage.

Summary

Tattu R-Line 550mAh 2S is a high-discharge 7.4V LiPo battery for compact FPV drones. Its 550mAh capacity, 95C discharge rate, XT30 power connector, JST-XHR-3P balance connector and approximate weight of 33 grams make it well suited to users who want strong and responsive performance from a small drone.

Tattu R-Line 550mAh 2S is a practical choice for FPV racing, freestyle flying and 3-inch toothpick-style drones, provided the platform supports a 2S LiPo battery and its dimensions. Compact construction and high current delivery help preserve drone agility without unnecessarily limiting performance.