The phenomenon of lithium-based power cells expanding in size is a condition characterized by a physical increase in volume. This is often visually evident as a bulging or deformation of the battery casing. For example, a laptop battery exhibiting a noticeable bulge in its housing is a clear indication of this condition.
Understanding the reasons behind this expansion is crucial for safety and performance considerations. Recognizing the potential for this issue allows for proactive measures to be taken, preventing potential hazards and extending the lifespan of electronic devices. Historically, improvements in battery chemistry and manufacturing processes have aimed to mitigate this problem, although it remains a concern under certain operating conditions.