Brezleen 18650 3.7v Rechargeable Li-ion Pack of 2 Battery  (Pack of 2)

Cylindrical Li-Ion battery, No memory effect and longer storage life than NiMH Batteries, Lighter weight and higher energy density than any other rechargeable battery-Ion 18650 cylindrical rechargeable batteries 3.7V 2000mAh high capacity High energy density and lower weight than other rechargeable batteries Battery tested based on International Electro technical Commission (IEC) standard to ensure capacity, quality, and life time . Applications Lighting or other device needs 3.7V power Building portable power device that needs high energy density and low weight For laptops, Lithium powered Flashlights, Lasers, Microcontroller Projects,Robots,Mp3 players, Mobile phones, Power Banks and other portable power devices. Product Specifications Capacity Nominal 2200 mAh Nominal Voltage: Average 3.7V Cut-off Voltage: 3.0V Cycle Performance: 90% of initial capacity at 600 cycles Cycle life: 1000 cycles Dimension: 64.7mm (H) x 18.2mm (D) Impedance: 100m�; Charge cut-off voltage: 4.2V; Discharge cut-off voltage: 3.0V; Charge temperature: 0~45; Discharge temperature: -20 ~ +60; Charge current: standard 1000-2000 mA, fast 2200 mA; Charge time: standard 3 hrs, fast 2 hrs; Pass Certificate�CE FCC RoHS For best performance and longer life of battery always use standard charging. Fast charging reduce the like of battery (its universal rule for any kind of battery)