In an era where data is as valuable as gold, the security and stability of memory backups rely heavily on small yet durable lithium-manganese batteries. When we click to save a file or query a database, have we ever wondered what protects those crucial memory backups? In servers, industrial computers, and various smart devices, there is an inconspicuous yet vital "silent cornerstone"—the lithium-manganese battery. For twenty years, it has remained unseen, ensuring data safety even in the event of power outages, malfunctions, or other unexpected situations.