This is the Dualsky 2700mah 3S 11.1v 50C HED Lipo Battery - XT60.

The new Dualsky HED series LiPO batteries are a high-performance TRUE 50C discharge, 5C charge pack. They are extremely durable being constructed from Japanese core materials. Offering outstanding performance true to their rating, lightweight and at an attractive price.

Capacity: 2700 mAh
Voltage: 11.1
Energy: 30 Wh
Number of Cells: 3.S1P
Dimensions (L x W x T): 138 x 44 x 15mm
Weight: 207g
Wiring & Connector: 12AWG (XT60)
Max Charge: 5C
Max Charge Current: 14A
Max Con. Discharge: 50C
Max Con. Current: 135A
Max Cruise Power: 425W