The 18650 lithium-ion battery is a standard lithium-ion battery model developed in Japan.
Among them, 18 means the diameter is 18 ± 0.3 mm, 65 means the length is 65 ± 0.5 mm, and 0 means cylindrical battery.
18650 lithium ion battery
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18 is a diameter of 18 mm, 65 is a height of 65 mm and 0 represents a cylindrical battery.
The nominal voltage of a single cell is generally: 3.6 V or 3.7 V
The charging voltage is generally: 4.20 V (the oxide of lithium-cobalt is 4.2 V to 4.3 V)< p>The minimum end-of-discharge voltage is generally: 2.75 V. A voltage lower than this voltage can easily result in a significant decrease in the capacity of the battery, or even its disposal.
Maximum charging termination voltage: 4.20 V
Diameter: 18 ± 0.2 mm
Height : 65 ± 2.0 mm
Capacity: 1000 mAh Above, the conventional capacity is 2200 mAh to 3200 mAh. Currently, LG has the highest 18650 battery capacity, which can reach 3600mAh, but the price is not low.
18650 lithium batteryUsage:
The theoretical life of the 18650 battery is 1,000 charge cycles . Due to their large capacity per unit density, most of them are used in laptop batteries. In addition, because 18650 has very good work stability, it is widely used in various major electronic fields: often used in high-end, portable, bright flashlights. Power supplies, wireless data transmitters, electric thermal clothing and shoes, portable instruments, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.
Reference for the above content: Baidu Encyclopedia-18650 lithium battery