New energy battery cabinet single cell voltage difference

How does a new battery differ from a conventional battery?

In a new battery, these differences are small but it has been shown that they increase over time. Because not a single cell can be over-charged or over-discharged, conventional batteries are limited by the weakest element in a series-link and they cannot access all energy in every cell.

What does voltage difference mean in a battery pack?

Voltage difference's acceptable range | grepow For battery packs, the voltage difference between individual cells is one of the main indicators of consistency. The smaller the voltage difference, the better the consistency of the cells and the better the discharge performance of the battery pack.

Why are cell-to-cell differences important in new high-quality batteries?

Therefore, cell-to-cell differences are often ignored in new high-quality batteries. However, the rate at which each of these cells degrades is also different, such that over time these small differences can greatly increase, even if the battery pack can tightly control the temperatures and state of charges of all cells.

What is the difference between a residential battery and a commercial battery?

A residential battery will typically consist of a few hundred cells, while utility-scale batteries may contain tens of thousands of cells. Commercial high-quality pristine cells will only exhibit small differences in capacity and resistance, not least because they are tested and sorted into quality groups by the manufacturer.