The Lithium battery stands as the top choice for the 3C digital and power tools industries, recognized for its superior features such as high energy density, voltage, environmental friendliness, prolonged lifespan, and rapid charging capabilities. While the commonly noted battery metric is mAh (milliampere hour), there exists a crucial distinction between the actual and rated capacities. In our daily usage, the emphasis often falls on milliamperes. Yet, an even more critical parameter in practical battery application is energy density. This vital indicator determines the amount of electricity a battery can store and release per unit volume or weight. Essentially, it defines the power storage capability of a battery of the same size or weight. In the realm of batteries, energy density emerges as a paramount factor, influencing the efficiency and effectiveness of various devices. As technology advances and the demand for compact, high-performing batteries rises, the significance of en…