What is the voltage of a lead-acid battery People often say: the voltage of this battery is 12V. The 12V mentioned here refers to the most basic parameter of the battery - the nominal potential (unit V). The nominal potential of a single cell of a lead-acid battery is 2V, and the nominal potential of a battery connected in series by 6 cells is 12V. The power supply used by electric vehicles is generally composed of 2 to 5 12V batteries connected in series to form 24V, 36V, 48V, 60V battery packs, here refers to the nominal potential of the battery pack, which is determined by the characteristics of the active material used in the battery determined theoretical value.

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