The cell voltage and capacity of a single lithium battery are too low. Generally, multiple cells need to pass through the PACK to become a lithium battery pack, and then be applied to different occasions.

　　The consistency of the battery cell is the key factor that affects the lithium battery PACK. So, what does the consistency of the lithium battery mean, and what if the consistency is poor?

　　The consistency of lithium batteries refers to the convergence of the important characteristic parameters of the cells that make up the lithium battery pack, and generally refers to the degree of consistency of capacity, internal resistance, weight, charge and discharge curves, etc.

　　Poor consistency will cause the following problems:

　　1. Overall capacity loss

　　The capacity of the lithium battery pack conforms to the Barrel Effect, and the capacity of the worst battery cell will determine the capacity of the entire lithium battery pack.

　　2. Early exhaustion in service life

　　The small-capacity battery cell is fully charged and discharged every time, and it is very likely that it will reach the end of its life first, and the whole lithium battery pack will also die with this battery cell.

　　3. Increased internal resistance

　　If the same current flows through different internal resistances, a battery with a large internal resistance generates more heat. If the temperature of the battery is too high, it will accelerate the increase of the internal resistance, forming a vicious feedback.

　　Although the battery management system (BMS) can adjust the difference in battery consistency, the BMS cannot change the essential performance of the battery cell.

　　In summary, the consistency of the PACK battery is very important.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect substitute for lead-acid batteries, and are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data centers and other industries.