18650 Lithium-Ion Cells are round high capacity cells that have been mainly used in flashlight type applications but with its capability to be used as a drop-in rechargeable cell at 3.7V with a capacity of 1500mAh. This is a great battery option for those of you who need a simple install and replace the cell with a lot of juice. Specification of 18650 Lithium Ion Cell 3.7V 1500mAh Battery : Model: TR 18650 Color: Blue Standard voltage: 3.7V Rated Capacity:1500mAh Diameter: approx 18mm Height: approx 65mm Applications: Arduino power supply, Robotics, Toys, etc. These 18650 Cells have a standard discharge current of 0.2C to a maximum of 1C and can handle about 300 charge cycles. Package includes: 1 x 18650 Lithium-Ion Battery Cell 3.7V in Pakistan