With great power comes great... 18650's

18650 batteries are rechargeable lithium-ion batteries that are commonly used in a variety of electronic devices such as laptops, flashlights, power tools, and even electric vehicles. The number 18650 refers to the dimensions of the battery, which is 18 millimeters in diameter and 65 millimeters in length. These batteries are known for their high energy density, meaning they can store a large amount of energy in a relatively small package.

18650 batteries typically have a nominal voltage of 3.7 volts and a capacity ranging from around 1500 mAh (milliampere-hours) to 3500 mAh, although higher capacity versions are available. They also have a relatively long lifespan, with some models capable of being recharged thousands of times before their capacity begins to degrade.

Applications include:

1. Consumer electronics: 18650 batteries are commonly used in portable electronic devices such as laptops, digital cameras, and flashlights.
2. Power tools: Many power tools, such as cordless drills and saws, use 18650 batteries as a power source.
3. Electric vehicles: Some electric vehicles, such as electric bikes and vehicles, use 18650 batteries as part of their battery packs.
4. Solar power systems: 18650 batteries can be used in conjunction with solar panels to store energy for use when the sun is not shining.
5. Medical devices: Some medical devices, such as handheld monitors and infusion pumps, use 18650 batteries.
6. Aerospace and defense: 18650 batteries are also used in some aerospace and defense applications, such as in satellites and unmanned aerial vehicles (UAVs).