Cells in Series and Pack Voltage

number of cells in series versus nominal pack voltage

When sizing a battery pack one of the first things to look at is the number of cells in series and pack voltage. Pack Nominal Voltage = Cell Nominal Voltage x Number of Cells in Series Cells in Series When connecting cells in series the negative terminal of the first cell is connected to the … Read more

Increasing Usable SoC Window

graph of battery pack usable SoC window percentage versus year of production

If you are in a battery design role there is always pressure on increasing usable SoC window. Nobody wants to pay for and carry around unused battery capacity. However, there are some really good reasons to restrict that window. High SoC and hence high cell voltage stresses the cell and significantly reduces the lifetime. Going … Read more