Brand: Sony Energy Model: US18650VTC6 Size: 18650 Chemistry: NMC Nominal Capacity: 3000mAh Nominal Voltage: 3.6V Discharge: 15A Max Continuous or 30A Max Continuous with 80C temperature cutoff Positive: Flat Protected: NO, UNPROTECTED Rechargeable: Yes Dimensions: 18.2mm x 64.9mm Weight: 46.8g