PbSO4, or lead(II) sulfate, is an inorganic compound composed of lead, sulfur, and oxygen. It appears as a white crystalline solid and is often used in various applications, including batteries and pigments. Its chemical formula indicates that it contains one lead atom, one sulfur atom, and four oxygen atoms. In the context of batteries, PbSO4 plays a crucial role in lead-acid batteries, where it forms during the discharge process. This compound is relatively insoluble in water, which affects its behavior in different chemical environments. Proper handling is essential due to the toxicity of lead.