“Pacemakers are devices that can be placed in your body, usually by surgery, to support the electrical system in your heart. They can stabilize abnormal heart rhythms and prevent problems that can disrupt or endanger your life.  Your heart has its own electrical system, which tells your heart’s chambers when it’s their turn to squeeze. When your heart’s electrical system malfunctions, your heart’s chambers may squeeze in the wrong order or squeeze too weakly to provide enough blood to your body. Pacemakers use electrical impulses to correct these kinds of malfunctions. 

While it depends on the specific model of pacemaker and how often it has to assist your heart, pacemakers are now available that can last as long as 10 or 15 years. Your healthcare provider can tell you the average lifespan of the device you’ll receive, and will also schedule follow-up appointments to check your pacemaker’s battery level. It’s also usually a simpler process to replace a pacemaker battery than it was to implant the device in the first place.”

Cleveland Clinic