This sport battery has a 45C discharge rate. It has been developed for hobbyists and backyard bashers who want to experience the great power of a LiPo battery pack at the lowest price! With a capacity of 4000mAh you will have good run-time. Spec: Type: LiPo Connector Type: Deans Balance Plug: JST-XH Configuration: Stick Weight: 300g Length: 139mm Width: 47mm Height: 29mm Style: Hardcase Manufacturer: Peak Part Number: PEK00552 Battery Connector Type: Deans Connector Voltage: 11.1v/ 3s Battery Configuration: Stick Battery Capacity: 4000mAh Battery Type: LiPo Battery Application: Power Packs 'C' Rating: 45C (PEK00552)