The capacity of 18650 lithium batteries is usually measured in milliampere-hours (mAh), indicating the amount of electric current the battery can provide under specific conditions. The common capacity range is between 2000mAh and 3500mAh. The capacity size directly affects the usage time of the device, but it is not the only determining factor.
II. Key Factors Affecting Capacity
Material selection: Different cathode materials (such as lithium cobalt oxide or lithium iron phosphate) can significantly affect capacity.
Temperature environment: Low temperatures will temporarily reduce the battery capacity, while high temperatures may cause long-term damage to the battery.
Charging and discharging rate: Rapid charging and discharging usually leads to a slight decrease in capacity.
III. Methods for Optimizing Battery Capacity
Proper charging: Avoid overcharging or overdischarging, and keep the battery level between 20% and 80%.
Temperature management: Use and store the battery at the appropriate temperature.
Regular maintenance: If the device is not used for a long time, it is recommended to perform a charge-discharge cycle every three months.
