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Introduction of 18650 and 26650


Introduction of 18650 and 26650


26650 lithium battery is a model specification of cylindrical lithium battery, that is, the diameter of the battery is 26mm, the length is 65mm, and the battery is cylindrical. Generally used to call lithium batteries, including lithium primary batteries and lithium ion batteries. Commonly used lithium batteries made of nickel-cobalt-manganese cathode materials and lithium iron phosphate materials—INR26650-3.6V-4500mAh, IFR26650-3.2V-3200mAh. Used in power tools, lighting, wind and solar energy storage, electric vehicles, toys, instrumentation, UPS backup power supply, communication equipment, medical equipment and special lamps.


Common 18650 batteries are divided into lithium-ion batteries and lithium iron phosphate batteries. The voltage of lithium ion battery is 3.7v nominal voltage, the charging cut-off voltage is 4.2v, the nominal voltage of lithium iron phosphate battery is 3.2V, the charging cut-off voltage is 3.6v, the capacity is usually 1200mAh-3350mAh, the common capacity is 2200mAh-2600mAh .

18650 lithium batteries are mostly used in notebook computer batteries due to their large capacity per unit density. In addition, because 18650 has very good stability at work, they are widely used in major electronic fields: commonly used in high-end strong light Flashlights, portable power supplies, wireless data transmitters, electric thermal clothing, shoes, portable instruments and meters, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.

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