Lithium -ion battery manufacturers explain the charging principle and charging process of lithium -ion battery. Lithium -ion batteries are widely used in portable electronic equipment such as mobile phones, videos, laptops, ropeless telephones, electric tools, remote control or electric toys, cameras, etc. with their excellent characteristics. Because of its excellent circulation performance, fast charging and discharge, charging efficiency as high as 100%, and large output power, long service life, does not contai