How does a rechargeable battery get exhausted?

A rechargeable battery gets exhausted through a series of chemical reactions that occur during the discharge process, where stored energy is converted into electrical energy to power devices. Over time, repeated cycling of charging and discharging can lead to the depletion of active materials within the battery, reducing its capacity. Additionally, factors such as temperature, charge/discharge rates, and age can accelerate wear and tear, ultimately diminishing the battery's performance and lifespan. As the battery ages, it may also develop internal resistance, further contributing to its exhaustion.