Both are lithium batteries, why are they divided into energy storage batteries and power batteries? I think many people have this question? Here we will introduce the differences between them.

Although energy storage batteries and power batteries are typically based on lithium-ion technology (such as lithium iron phosphate or ternary lithium), they have significant differences in design, performance, and lifespan due to their vastly different application scenarios and requirements.

Simply put, it can be understood using a metaphor:

Power battery - like sprinters: pursuing explosive power, speed, and agility (high power, high energy density). For example, many electric vehicle batteries nowadays can be charged quickly, with slow charging taking 8 hours and fast charging taking only 30 minutes to fully charge.

Energy storage batteries - like marathon runners: pursuing endurance, stability, and cost-effectiveness (long lifespan, high safety, low cost).

Below, we will make a detailed comparison from several dimensions. Please refer to the table below:

Although there are many differences between power batteries and energy storage batteries, the core principle of the battery cell is the same, consisting of a positive electrode, a negative electrode, a separator, and an electrolyte. But there will be significant differences in design and material selection.

For example, if a power battery requires high rate charging and discharging, it needs to choose a positive electrode material with better conductivity, and the D50 of the material should be as small as possible. At the same time, conductive agents such as CNT should be added to the formula to improve performance. In addition, in order to pursue high magnification, the compaction density and surface density cannot be made too high. Our current energy storage cells are mostly based on 280Ah and 314AH, and are mostly stacked. And power batteries come in both wound (cylindrical and square) and laminated (square) forms.

Due to the characteristics of different projects and lithium batteries, battery manufacturers need to make corresponding adjustments based on customer needs.

Be Power specializes in providing lithium-ion batteries for various applications and customized solutions for customers. Welcome to our official website for more information: www.bepower.com.cn