Features: Replacement battery for H99W H31 H6C H98 TR-C385 TR-P51 TR-F22 quadcopter parts model aircraft drone. Built-in protection IC, with overcharge protection and short circuit protection, protects the battery from damage and extends the battery life.3. 7V 550mAh lithium polymer battery, provides more power, no need to worry about power interruption during flight. Designed specifically for high-performance RC drone enthusiasts and enthusiasts, and quadcopter enthusiasts.Specifications:Battery type: polymer high-rate lithium batterySize: approx. 36x20 mm/1.42x0.79 inchesVoltage: 3.7VBattery capacity: 550mAhNote: For more compatible models, please feel free to contact us. Please allow 0-1cm error due to manual measurement. Please make sure you don't mind before ordering. Due to differences between monitors, images may not reflect the actual color of the item. ThanksPackage list: 5 3.7V 5500mAh lithium batteries