18650과 21700 배터리의 차이점은 무엇입니까? 18650 또는 21700 중 어느 것이 더 낫습니까? Posted by batterymanufactory.com
Lithium-ion battery has a high energy density, its capacity is 1.5 to 2 times that of a nickel-hydrogen battery of the same weight, and it has a very low self-discharge rate. In addition, lithium-ion batteries have almost no "memory effect" and do not contain toxic substances. These advantages of lithium-ion batteries make it widely used in the field of new energy vehicles. Nowadays, the more widely used cylindrical lithium-ion batteries are 18650 batteries and 21700 batteries. 18650 battery: 18650 batteries originally referred to nickel-metal hydride batteries and lithium-ion batteries. As nickel-metal hydride batteries are now less used, they now refer to lithium-ion batteries. 18, 65, 0 is the originator of lithium-ion batteries --- a standard lithium-ion battery model set by SONY in Japan in order to save costs, where 18 means a diameter of 18mm, 65 means a length of 65mm, and 0 means Cylindrical battery. Common 18650 batteries include ternary lithium-ion ...