The pacemaker system consists of two parts: the electrode lead and the pacemaker pulse generator. The battery and the electronic components constitute the pulse generator, which is commonly known as the pacemaker, and they are a whole. Is it necessary to reinstall the pacemaker after 10 years? The most accurate way to determine whether to replace a single-chamber pacemaker is to test the remaining power with a special instrument, and replace it within six months if the remaining power is insufficient. If your pacing heart rate is 70 beats per minute, but your self-measured heart rate is only 60 beats per minute, you should get your pacemaker replaced by a doctor right away! Of course, to avoid being caught off guard you can replace it after 10 years of use.