Battery

• What kind of battery do you have?

  18650 and 21700 rechargeable Li-ion battery.

• What is the battery life?

  About 500 times charge and discharge cycles.

• What is the meaning of “18650”?

  18 means the diameter of the battery, and 65 means the length of the battery, 0 means the cylindrical shape.

• What should I do if the battery reaches its service life?

  Just buy the same type battery as before is right.