This rechargeable Lithium Ion Polymer Battery is a cylindrical 18650 cell that is typically used in everything from small flashlights to electric cars. The battery has a capacity of 2500mAh at 3.7V, the voltage can range from 4.2V when fully charged to 3.0V when completely discharged. This battery does not have built-in protection circuitry, so extra care must be taken to not overcharge or discharge the cell. 

Specifications:

• Nominal Voltage: 3.7V
• Nominal Capacity: 2500mAh
• Max Charge Current: 1250mA (0.5C)
• Max Discharge Current: 2500mA (1C)
• Dimensions: 18±0.5mm (0.71±0.02") diameter x 65±0.5mm (2.56±0.02") long
• Weight: 50 grams

Note:

• This battery does not come with any solder tabs, wires or connectors. You must use it with a 18650 cell holder.

Package Includes:

• 1 x 18650 LITHIUM ION POLYMER BATTERY - 3.7V 2500MAH