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What is the Operating Voltage of a Battery?
Also known as terminal voltage, refers to the potential difference between the positive and negative terminals of the battery in the working state ( there is current through the circuit ) . In the battery discharge working state, when the current flowing through the battery, do not need to overcome the resistance caused by the internal resistance of the battery, so the working voltage is always lower than the open circuit battery, charging is the opposite. Li-ion's discharge working voltage is about 3.6V.