NOVELTY - The lead acid battery comprises a negative electrode, a positive electrode, a separator (130) between the negative and positive electrodes, an electrolyte present in contact with the negative and positive electrodes, and a unit to shift the voltage at which hydrogen is produced at the negative electrode by 30-60 mV. The voltage shifting unit leaches metal ions into the electrolyte with a target metal ion concentration, and comprises a battery separator and a resin coating containing particles of metal or a metal compound on the surface of a battery component and in a resin filled separator.    USE - Used as a valve regulated lead acid battery.    ADVANTAGE - The lead acid battery exhibits improved operation speed and efficiency, and increased battery life.    DETAILED DESCRIPTION - The lead acid battery comprises a negative electrode, a positive electrode, a separator (130) between the negative and positive electrodes, an electrolyte present in contact with the negative and positive electrodes, and a unit to shift the voltage at which hydrogen is produced at the negative electrode by 30-60 mV. The voltage shifting unit leaches metal ions into the electrolyte with a target metal ion concentration, and comprises a battery separator and a resin coating containing particles of metal or a metal compound on the surface of a battery component and in a resin filled separator, where the surface is present in contact with the battery electrolyte. The battery component consists of a separator, a case (102), a positive electrode and/or a negative electrode. The resin coating has a thickness of 1.4-166 microns. The battery separator comprises 9-11 wt.% of glass fibers that are coated with a resin layer that contains particles of a metal or metal compound and with an intermediate layer comprising a sizing agent between the glass fiber and the resin layer.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a lead acid battery.    Anode plates (13)    Case (102)    Top of case (104)    Negative terminal (112)    Positive terminal (122)    Separators. (130)