A lead-acid battery discharges over time because lead sulfate (PbSO₄) forms on both the anode and cathode during the chemical reaction, reducing the availability of active materials and lowering the battery’s ability to produce current.
Lead acid batteries discharge with time because of:
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Question context
This question is part of ⚡ Electrical Engineering within the broader 🛠️ Engineering Essentials subject and appears in the Engineering College Admission Test (ECAT) preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.