18650 lithium battery is a new type of lithium ion battery, which has reached a new height in energy density, bulk density and cycle life. However, its capacity is limited compared with the traditional lithium battery. How many capacities do 18650 lithium batteries have? What's the difference?
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1. The capacity of a traditional lithium battery is more than 500 mAh. Because the capacity of the battery cell is relatively small compared with that of a traditional lithium battery, more attention is paid to the capacity and service life of the battery when selecting the battery capacity. Generally, the larger the capacity, the longer the service life.
At present, 18650 lithium batteries with a capacity of more than 250 mAh are mainly nickel cadmium batteries, which are divided into two types: large (g) capacity and small (g) capacity. However, because the capacity and volume of nickel cadmium battery are relatively small, it is more suitable for small electric vehicles and some micro electric bicycles. In the 18650 lithium battery, the capacity is relatively simple compared with the traditional lithium battery, which is generally about 200 mAh, and the performance is relatively poor compared with the nickel cadmium battery because the nickel cadmium battery is the main component.
2. The 18650 lithium battery can use different lithium battery manufacturing materials to make batteries of different capacities. Generally, the 18650 lithium battery can use three different materials to make batteries of different capacities. Generally, the battery made of this material is smaller than the traditional battery, so it can be used to make batteries of high power and small size.
The battery with this capacity can usually meet the requirements of general consumer electronics and high power. The service life of 18650 lithium battery is generally much longer than that of traditional lithium battery. In addition, the lithium battery has good low temperature resistance. It can be stored for a long time at a temperature between - 20 ℃ and+100 ℃, and can work normally at low temperatures. The voltage of 18650 lithium battery is 3.6 V to 5.0 V, which is the main reason why most 18650 lithium batteries have the same voltage as ordinary lithium batteries. The cathode materials of 18650 lithium battery are mainly NCM811, LFP and LFP; The anode material is mainly lithium salt or PVDF additive.
3. From the above two tables, we can see that the common 18650 lithium battery mainly refers to three capacities, namely 500 mAh, 700 mAh and 800 mAh. The charging process produced by batteries with different capacities is somewhat different, so we suggest that you choose three capacity batteries with high quality and high added value.
18650 lithium battery has the characteristics of small size, high energy density, high power, light weight, long cycle life, and is widely used in automobiles, motorcycles, electronics and telecommunications and other fields. The large capacity of 18650 lithium battery provides a solid guarantee for it to become the power battery of new energy vehicles.
4. It can be seen from the above table that the price difference is also large under the same capacity. Generally, when we buy batteries, we will look at the material and manufacturing process to determine which battery product it belongs to!
The choice of materials and manufacturing process determines which battery product it belongs to, which is also important at present. What can 18650 batteries do? It can be used as an electric bicycle with 18650 batteries. It can be used as a lithium battery for power. The 18650 lithium battery has high endurance and good safety. And the cost is low, and the battery service life is long. The above is an introduction to several capacity related issues of the 18650 lithium battery.
According to their price differences and different manufacturing processes, we will have different requirements when choosing!
Different capacities determine their service life to a certain extent, and affect the service life of electric vehicles to a certain extent. We all know that the lithium ion in the lifepo4 battery pack starts from the positive pole, while the negative pole starts from the negative pole. Therefore, it is necessary to choose according to the service life when purchasing.