The Tattu R-Line 550mAh 3S 95C LiPo is a lightweight lithium polymer battery pack. With its small size, 18 AWG wiring, and an XT30 connector, this battery is perfect for compact flywheelers like the Nightingale and Nightingale 2.0. FEATURES:• Micro-sized 3S Lithium Polymer battery• Highest energy density and discharge for its size• High-end Tattu R-Line guaranteed reliability• Designed to fit the smallest battery compartments• Compatible with OG Nightingale (1.0) and Nightingale 2.0• Compatible with 3S motors like Krakens, Valkyries, and Lokis INCLUDES:• 1 550mAh 3S LiPo* *A voltage alarm (not included) is required to use LiPo batteries safely.  We recommend using an advanced charger for lower-capacity LiPos. The cells in lower-capacity LiPos tend to unbalance themselves with regular use, and basic LiPo chargers cannot re-balance the cells if the voltage is too far apart. SPECS:  • Chemistry: Lithium Polymer (LiPo)• Capacity: 550mAh• Configuration: 3S1P (11.1V)• Discharge Rate: 95C continuous; 190C burst• Wiring: 18 AWG• Connector: XT30 • Dimensions: 69 x 22 x 19mm LINKS:• Recommended Charger • XT30 Charging Adapter• LiPo Voltage Alarm• LiPo Safety Bag• LiPo Safety Information