100% Brand New, Original Keeppower product- 18650 3500mAh Protected Rechargeable Battery- Cell: Sanyo NCR18650GA 3500mAh- Min Capacity: 3350mAh, Typical Capacity: 3500mAh- 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 Power box