What is the main role of the battery in a pacemaker?

The primary function of the battery in a pacemaker is to supply voltage and power to the device. This is crucial for the operation of the pacemaker, as it needs a continuous source of energy to generate electrical impulses that stimulate the heart muscles, ensuring they contract at regular intervals. The battery provides the necessary voltage to maintain these functions, enabling the device to effectively manage the heart rhythm.

While the battery does contribute to some extent in terms of storing energy and supporting the pacing operations, its main role is specifically to power the device, allowing it to perform its essential function of pacing the heart. Other components within the pacemaker, such as the circuitry and programming, are responsible for monitoring heart activity and controlling pacing operations, but without a functioning battery, the device would be unable to deliver the impulses needed for heart rhythm regulation.