Li-ion batteries Gold-colored 18650
The batteries have a capacity of 2000mAh and a voltage of 3.7V.
The name; refers to the battery's dimensions: 18mm in diameter and 65mm in height.
These types of rechargeable batteries are commonly used in devices that require a continuous high current, such as flashlights, power tools, and some portable electronics.
They are known for their long life, with some able to be recharged up to