What is the difference between a power lithium battery and a general lithium battery?

　　1. The difference in ability

　　The biggest difference between power and ordinary batteries is the large discharge power and high energy. Because it is vital to the energy supply of cars, it has a higher discharge power than ordinary batteries.

　　2. The difference in appearance

　　Power lithium battery: The electrode type and thickness of the battery, the diaphragm is also very thick, can withstand the discharge rate of 12C-50C, but the capacity is very small. Ordinary battery: the so-called capacity battery, the diaphragm is small and generally cannot withstand the maximum discharge of 2.5C

　　3. Voltage difference

　　The operating voltage of ordinary power lithium batteries is lower than that of ordinary lithium batteries. The maximum charging voltage of an ordinary lithium battery is 4.2V, and the maximum charging voltage of a power lithium battery is about 3.65V. The nominal voltage of an ordinary lithium battery is 3.7V, and the nominal voltage of a power lithium battery is 3.2V.webcam factory

　　4. Different attributes

　　Lithium batteries are batteries that drive cars and are usually compared with small batteries that drive portable electronic devices. Ordinary lithium batteries are primary batteries with lithium metal or lithium alloy as the negative electrode material and non-aqueous electrolyte solution, while rechargeable batteries are different from lithium batteries and lithium ions.

　　There are currently three types of mobile power batteries on the market: 18650, polymer and lithium iron phosphate. Polymer lithium batteries are the best choice for consumers, followed by 18650 batteries. Compared with the first two batteries, the technology of lithium iron phosphate batteries is not mature yet, and the fatal shortcomings of large size and high price hinder the large-scale development of mobile power sources. This article describes the first two types of batteries. The 18650 battery refers to a battery with a diameter of 18mm and a length of 65mm. The 18650 battery technology is relatively mature, the battery structure is stable, the specific capacity is high, the overall performance is outstanding, and because of its small size, it can be used in many fields. Its disadvantage is that it is safer than lithium polymer batteries, and the battery life is only about 300 times. Polymer batteries are different from traditional lithium batteries in the production process. Lithium batteries are made of coils and are flexible. This polymer is superimposed and has a very hard shape. The volume of the polymer is the same as that of the lithium battery, and the capacity of the polymer is larger, about 30% higher. It is also safer and has fewer explosions. long lasting. It has been charged and discharged more than 500 times. The disadvantage is the high cost. Polymer batteries of the same capacity are at least 100% more expensive than 18650 lithium batteries.