What is a lithium-ion battery?

Lithium-ion batteries represent a modern method of energy storage. Their high energy density has transformed numerous industries. Capable of storing up to 330 watt-hours of energy per kilogram—far exceeding that of traditional batteries—they are ideally suited for compact, lightweight designs. They also deliver voltages of up to 3.6 volts, which is 1.5 to 3 times higher than that of many conventional batteries.

Another key characteristic is their low self-discharge rate of 1.5–2% per month, which enables them to retain stored energy for extended periods. Unlike traditional batteries, they do not suffer from capacity loss when partially charged. These attributes make lithium-ion batteries an ideal choice for portable electronic devices, electric vehicles, and green energy systems.