18650 lithium battery specifications
The specifications of 18650 lithium batteries mainly include their physical dimensions, voltage, capacity, and other parameters.
The diameter of the 18650 lithium battery is 18 millimeters and the height is 65 millimeters, making it a standard cylindrical battery. Its nominal voltage is usually 3.6V or 3.7V, with a charging voltage range of 4.20V ± 0.049V and a minimum discharge termination voltage of 2.75V. The weight of 18650 lithium batteries is about 45 grams, with a wide capacity range, generally between 1800mAh and 3600mAh, depending on the brand and technology of the battery.
In addition, 18650 lithium batteries have the characteristics of high energy density, good rechargeable performance, and diverse chemical systems. Common positive electrode materials include lithium cobalt oxide (LiCoO2), lithium manganese oxide (LiMn2O4), nickel cobalt manganese ternary materials (NMC), etc. The negative electrode material is mainly graphite. These characteristics make 18650 batteries widely used in consumer electronics, power tools, electric vehicles, and other fields.
In terms of use and maintenance, it is recommended to avoid overcharging and overdischarging, and the working temperature should be between 0 ℃ and 45 ℃, with the optimal working temperature being between 20 ℃ and 40 ℃. In addition, it should be avoided to use in humid and extreme temperature environments to prevent safety accidents.
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