100% Brand New, Original Keeppower product- 18650 2600mAh Protected Rechargeable Battery- Cell: Samsung ICR18650-26H, made in Korea- Min Capacity: 2550mAh, Typical Capacity: 2600mAh- Normal Voltage: 3.7V- Quality Lithium-ion rechargeable cell, In Built Safety Circuitry- Protection Circuit (Against overcharge, over discharge, over current and short-circuit.)- 4.2 volts max voltage and 3.7 volts nominal voltage- Over 500 charge-discharge cyclesPackage includes : (with industrial package)Keeppower 18650 Batteries x2Keeppower Battery box