The pacemaker is a battery-powered medical device that Bradycardia patients use to correct their heartbeat. About 5-7 years are the maximum lifespan of the pacemaker battery. Once the battery fully discharges, a patient undergoes surgery to replace the battery, which is costly and painful. The piezoelectric energy harvesting method, which increases the life of rechargeable pacemaker batteries by capturing energy from heart action, is one approach to the problem. For testing such harvesters, animal testing is a prime concern. To get around this problem, we built a mechanical heart that replicates the anatomical motion of the human spirit. The model reproduces the movement of the four chambers of the heart. The model accurately reproduces the motion of the heartbeat with a minimal BPM (Beats per minute) error at average BPM (60–100) and an error of roughly 8.4% at high BPM (110–130). The mechanical model has a 3D- designed silicon cover/shell in the shape of the heart. The cover provides a more realistic anatomical heart movement. In addition to being utilized for medical research, this heart model is used to test pacemaker battery recharging. The flexible tiny Piezo sensor, mounted to the bottom of the heart model, transforms the mechanical stress of the heart's movement into electrical energy. This model could replace a portion of animal testing. The result demonstrates that the model simulation is error-free in a real-time operation

Pacemaker; Mechanical Heart; Anatomical Heart Piezo Sensor; Rechargable batteries