Ventilgeregelter Bleiakkumulator

摘要

A valve-regulated lead-acid battery produced by a so-called battery case forming method including preparing a battery from unformed positive and negative grids, injecting a predetermined dilute sulfuric acid into said battery, and then applying an electric current to said battery so that the group of grids is formed in situ is provided. The valve-regulated lead-acid battery has an negative active material containing an oil incorporated therein. The amount of the oil to be incorporated is preferably from 0.05 to 1% by weight. The oil may be a paraffinic oil, naphthenic oil, olefinic oil, aromatic oil or silicon-based oil.