What is the size of 18650 lithium battery? What's the difference between a 18650 battery and a AA battery?

The 18650 battery life theory provides 1,000 cycles of charging. As the density of the unit capacity is very big, so most of the laptop battery, in addition, in 18650 at work stable performance is very good, is widely used in the electronics field: commonly used in high-grade light flashlight, portable power, wireless data transmission, electric thermal clothing, shoes and portable instruments and meters, portable lighting, portable printers, industrial equipment, medical equipment, etc.

What is the size of 18650 lithium battery?

The 18650 is not A battery of several sizes, but A type A battery with A diameter of 18mm, which is generally lithium. The number three battery refers to the type C battery, with a diameter of 26mm. No.5 battery (AA) is one of the battery types, which generally refers to the size of 14mm in diameter and 49mm in height.

The number 18650 in 18650 lithium battery represents the external size: 18 refers to the battery diameter of 18.0mm, and 650 refers to the battery height of 65.0mm. The common 18650 battery is divided into lithium ion battery, lithium iron phosphate battery and nickel metal hydride battery.

What's the difference between an 18650 battery and a no. 5 battery?

1. Different sizes. Although the 18650 and size 5 batteries look similar, they are actually different in size. The 18650 lithium battery is 18 mm in diameter and 65 mm in length. The rule for the no. 5 battery (actually the scientific name of the no. 5 battery is 14500 battery) is 14 mm in diameter and 50 mm in length. The 18650 is much larger than the size 5 battery in both length and diameter.

2. Different voltages. Lithium battery voltage is generally around 3.5~4.0V, the most common is 3.7V; The voltage of the no.5 battery is 1.5V (non-rechargeable) or 1.2V (rechargeable).

3. Its working principle (internal chemical reaction process) is different.

4.18650 is a rechargeable battery. Most of the ordinary no.5 batteries are disposable, with little or no rechargeable.