an ultra-lightweight, high-discharge micro Lithium Polymer battery. 
It is specifically engineered to power micro RC aircraft, such as the E-flite UMX plane series (e.g., UMX Pitts), small indoor flyers, park flyers, and micro helicopters that require a compact 3-cell power source.
Battery Type: Lithium Polymer (LiPo)
Configuration: 3S1P (3 Cells in Series, 1 Parallel)
Voltage: 11.1V Nominal
Capacity: 300mAh (3.33 Wh)
Continuous Discharge Rate: 45C
Maximum Charge Rate: 1C (0.3A recommended for maximum longevity)
Main Discharge Connector: Red JST-SYP-2P female plug
Balance Connector: Standard JST-XHR-4P plug (universal 3S balance standard)
Dimensions (LxWxH): 40mm x 21mm x 17mm (1.57 x 0.83 x 0.67 inches)
Weight: 26g (0.92 oz)