tldr: There are many ways to measure and look at battery storage technology. I outline some of the ways in this article.
I’m going to follow the outline below to define batteries, describe their characteristics, and get a grasp of all the claims being made in the media about battery technology.
The nominal or known voltage of a galvanic battery is determined by its chemistry. The known voltage or nominal voltage is the voltage without variation.
Each and every cell’s chemistry is defined by its own nominal voltage and discharge curve.
The area under the discharge curve is the Total Battery Capacity. The bottom axis can also be thought of as time.
Keep in mind, the actual w/ variance voltage depends on multiple factors.
Battery performance varies drastically with temperature. Let’s take a look at discharge curves for one type of battery under different temperature profiles.
Self discharge describes how quickly batteries lose their energy sitting on the shelf because of undesirable inevitable reactions inside the cell. I hate using rudimentary descriptions for the risk of misunderstanding, but I often think about this the same way I think about radioactive decay. The same pattern with different metrics apply.
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