this post was submitted on 03 Dec 2023
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The voltage range depends a lot on cell construction, temperature, load or charge rate, and chemical mix.
For example "lead acid" batteries with lead and sulphuric acid have a cell chemistry voltage of 2.05 volts but their nominal range is 1.8 to 2.4 volts per cell. Translating that to a 6 cell "12 volt" car battery gives you a range of 10.8 to 14.8 volts.