CMICR 18650 F9M 3200mAh

A battery has good charge-discharge efficiency, which means it can efficiently convert stored energy into usable electricity. This efficiency is critical for devices that are used for extended periods of time, as it extends battery life. With a rated capacity of 3200mAh, it is suitable for devices that require larger capacity and longer usage time, such as wireless communication devices, consumer electronics, and medical equipment.

Cylindrical Li-ion Cell

Li-ion Battery Pack

Energy Storage Lithium Battery

Prismatic Cell

The Working Principle of 18650 Lithium Battery

Charging process:

Positive electrode reaction: During the charging process, the external power supply provides current, and the lithium ions (Li+) in the positive electrode (lithium cobaltate) are oxidized to the lithium ion oxidation state (LiCoO2). Cobalt ions (Co3+) in the positive electrode material are transformed into Co4+ ions by losing an electron.

Negative electrode reaction: At the same time, lithium ions in the negative electrode (graphite) are intercalated into the graphite structure to form lithiated carbon (LiC6) compounds. The graphite structure in the negative electrode material can accommodate and intercalate lithium ions.

Discharge process:

Positive electrode reaction: During the discharge process, when the battery supplies power, lithium ions are released from the positive electrode material and transferred to the negative electrode material. This process involves the transition of Co4+ ions from the Co3+ ion state to the Co2+ ion state.

Negative electrode reaction: At the same time, lithium ions in the negative electrode leave the graphite structure and return to the electrolyte. This allowed the negative electrode to return to the original state of graphite.