1. Good safety performance. Polymer lithium batteries use aluminum-plastic flexible packaging in their structure, which is different from the metal shell of liquid batteries. Once a safety hazard occurs, the lithium-ion battery cells will simply explode, while the polymer battery cells will only inflate, at most incinerate.

　　2. Small thickness can make it thinner, ultra-thin, with a thickness of less than 1mm, and can be assembled into a credit card. There is a technical bottleneck for ordinary liquid lithium batteries to have a thickness of less than 3.6mm, while 18650 batteries have a standardized volume.

　　3. Lightweight and large in capacity, batteries with polymer electrolytes do not require a metal shell as a protective outer packaging. Therefore, when the capacity is the same, they are 40% lighter than steel shell lithium batteries and 20% lighter than aluminum shell batteries. When the volume is generally large, the capacity of polymer batteries is larger, about 30% higher.

　　4. The shape can be customized, and polymer batteries can be added or reduced in cell thickness according to practical needs. For example, a famous brand's new laptop uses trapezoidal polymer batteries to fully utilize internal space.

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