At present, most batteries for medical instruments are polymer batteries, because polymer batteries have excellent quality, excellent performance, and high safety. Instrument batteries are widely used in sphygmomanometers, wearable blood oxygen monitors, palm monitors, wearable single-lead electrocardiographs, beauty ins

　　1. The safety performance is good. The medical instrument battery adopts aluminum-plastic flexible packaging in its structure, which is different from the metal casing of the liquid battery. Once a safety hazard occurs, the liquid battery is easy to explode, and the medical instrument battery will only blow.

　2. Small thickness, can be made thinner. There is a technical bottleneck for the thickness of liquid lithium ion batteries below 3.6mm, but this problem does not exist in medical instrument batteries, and the thickness can be below 1mm.

　3. Light weight. The weight of medical instrument batteries is 40% lighter than steel batteries with the same capacity and 20% lighter than aluminum batteries.

　　4. The shape can be customized, and the battery of medical instruments can be increased or decreased according to the needs of customers, and the shape can be changed flexibly and quickly.

　　5. Large capacity. The capacity of medical instrument batteries is 10-15% higher than that of steel batteries of the same size, and 5-10% higher than aluminum batteries.

　　6. The internal resistance is small. Through special design, the impedance of the battery can be greatly reduced, and the performance of the battery with large current discharge can be greatly improved.