Lithium cobaltate battery, the usual 18650 battery, is similar to the enlarged version of No.5 battery, with a standard voltage of 3.7V It has the advantages of mature technology, low cost, small size and large capacity, and is widely used in notebook computers. The disadvantage is that the number of battery cycles is about 300, and the safety performance is poor, which is not suitable for high-rate charge and discharge. With steel case, unqualified batteries may explode.
Lithium cobaltate battery has stable structure, high capacity ratio and outstanding comprehensive performance, but its safety is poor and its cost is high. Mainly used for small and medium-sized batteries, such as mobile phones, MP3/4 and other small electronic devices.