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The voltage of 18650 lithium ion battery is standard 3.6 or 3.7v, and it is 4.2v when fully charged. The mainstream capacity of 18650 lithium ion battery ranges from 1800mAh to 2600mAh (the capacity of 18650 power battery is mostly 2200~2600mAh), and the mainstream capacity even has standard 3500 or Anything above 4000mAh is available.
The 18650 lithium ion battery life theory is 1000 cycles of charging. Because of the high density and capacity, most of it is used in laptop batteries. In addition, because the 18650 lithium ion battery has a very good stability at work, it is widely used in major electronic fields: Commonly used in high-end glare flashlights, portable power supplies, wireless data transmitters, electric thermal clothing, shoes, portable instruments, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.