Which of the following terms refers to the process by which a battery or cell loses its ability to hold charge over time?

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Question

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RRB JE CBT 2 (Electronics Engineering) ReExam Official Paper (Held On: 04 Jun, 2025)

Answer 1

The term that refers to the process by which a battery or cell loses its ability to hold charge over time is Battery aging.

Explanation:

Battery aging (also known as battery degradation or capacity fade) describes the irreversible chemical and physical changes that occur within a battery over its lifespan, leading to a reduction in its ability to store and deliver energy. This includes a decrease in its overall capacity to hold a charge.

Additional Information

Capacity: This is the total amount of electric charge a battery can deliver at its rated voltage. It's a measure of how much charge a battery can hold, not the process of losing that ability.
Internal resistance: This is the opposition to the flow of current within the battery itself. While internal resistance can increase as a battery ages, it is a factor contributing to performance degradation, not the process of losing charge holding ability itself.
Charge efficiency: This refers to the ratio of energy (or charge) discharged from the battery to the energy (or charge) put into it during charging. It indicates how effectively a battery can store the energy it receives, not its long-term degradation.