This is a replacement Reedy WolfPack 1S LiPo 10C 3.7V Battery Pack, intended for use with the Element RC Enduro24 Sendero 1/24 Mini Trail Truck.
Specifications:
Type: Lithium Polymer
Capacity: 520mAh
Voltage: 3.7V nominal
Connector Type: Micro
Number of Cells: 1