2 Pack 3.7V 100mAh Lipo Battery for WLtoys V272,Cheerson CX-10 Mini Quadcopter Estes Proto X, Syncro X Drone

Number of Batteries: 2 Lithium Polymer batteries required. (included)
Battery Cell Composition: Lithium Polymer
Voltage: 3.7 Volts
Reusability: Rechargeable