Its a 18650 2550mah Lithium Ion Battery with 2250mah Capacity. It has a very high discharge rate of 3C. And has 1000 life cycles, which means that the battery has 80% capacity after 1000 cycles.

Specifications

• • Nominal Capacity: 2550 maH
  • Nominal Voltage: 3.7V
  • Full Charge Voltage: 4.2V
  • Discharge Rating: 3C
  • Form Factor: 18650
  • Life cycle: 1000 Cycles