18650 battery is a kind of battery collectively, now mostly refers to 18650 lithium battery, of which 18650 refers to the size of the battery, 18 represents the diameter of 18mm, 65 represents the length of 65mm, 0 represents the cylindrical battery.
The power battery capacity of 18650 is usually about twice smaller than that of ordinary batteries. It is estimated that it will not exceed 2000mAh at most. Generally in the appearance of 1000mAh~1800mAh.
The operating voltage of ordinary power batteries is lower than that of ordinary lithium batteries. The highest charging voltage of ordinary lithium battery is 4.2V, and the highest charging voltage of power lithium battery is about 3.65V. Normal lithium battery nominal voltage is 3.7V, power lithium battery nominal voltage is 3.2V.
18650 power battery support large current discharge, may reach 20 times the capacity of current, 18650 ordinary lithium battery only support 1 times the capacity of discharge, that is, an ordinary 2600mAh ordinary battery, the maximum discharge current is 2600mA.
What is the difference between 18650 power lithium battery and ordinary 18650 lithium battery?
1, 18650 dynamic lithium battery anode and cathode material particles are smaller than ordinary 18650 lithium battery (increase the surface area, speed up the chemical reaction rate), the diaphragm material and electrolyte conductivity is better.
2, 18650 power lithium battery in the positive and negative pole leads to the pole ear is also more than ordinary 18650 lithium battery (reduce the inner resistance of the pole ear and meet the larger current).
3, 18650 power battery support large current discharge, may reach 20 times the capacity of current, 18650 ordinary lithium battery only support 1 times the capacity of discharge.
4. The capacity of 18650 power battery is about twice smaller than that of ordinary 18650 lithium battery.
5, ordinary lithium battery charging voltage is 4.2V, the highest power lithium battery charging voltage is about 3.65V. Normal lithium battery nominal voltage is 3.7V, power lithium battery nominal voltage is 3.2V. "Lithium battery" is a kind of battery with lithium metal or lithium alloy as anode material and non-aqueous electrolyte solution.
