What kinds of batteries are included in lithium batteries?
There are currently three types of mobile power batteries on the market: 18650 batteries, polymer batteries, and lithium iron phosphate batteries. It is best for consumers to buy polymer lithium batteries, followed by 18650 batteries. Compared with the former two, the technology of lithium iron phosphate batteries is not mature, and the fatal disadvantages of large size and high price make it impossible to move. Large-scale in the power supply. This article introduces the first two batteries.
18650 batteries
The 18650 lithium battery refers to a battery with a diameter of 18mm and a length of 65mm, and 0 represents a cylindrical battery. The technology of the 18650 battery cell is relatively mature, the battery structure is stable, the specific capacity is high, the comprehensive performance is outstanding, and because of its small size, it can be used in many areas. The disadvantage is that its safety is worse than that of polymer lithium batteries, and the number of cycles of the battery core is lower, only about 300 times.
Polymer batteries
The difference between polymer batteries and traditional lithium-ion batteries lies in the production process. Lithium batteries are wound and are relatively soft. The polymers are superimposed and have a harder body shape. With the same volume of polymer and lithium batteries, the capacity of the polymer is larger, about 30% higher. And it's safer, and the risk of explosion is small. long lasting. The charge and discharge reached more than 500 times. The disadvantage is that the cost is high. Polymer batteries with the same capacity are at least 100% more expensive than 18650 lithium ion batteries.
