Why do mobile power supplies start using lithium polymer batteries?

In the past, power banks all used 18650 batteries. 18650 batteries were favored by many brands for their light weight and high capacity. However, with the advancement of lithium polymer battery technology, manufacturers have gradually switched to lithium polymer batteries. So why are all power banks using lithium polymer batteries?

Lithium Polymer Batteries

1. What are lithium polymer batteries?

Lithium polymer batteries are a new type of high-density lithium battery. They use collagen fiber polymer as the electrolyte and can be manufactured in a variety of shapes and capacities to meet device requirements. The minimum wall thickness can reach 0.5mm, and they have no charge memory.

2. What are the advantages of lithium polymer batteries over 18650 batteries?

1. 18650 batteries are conventional lithium batteries with a liquid electrolyte, while lithium polymer batteries use a gel electrolyte, making them less prone to leakage.

2. Lithium polymer batteries have a relatively high density and strong ductility. They can be manufactured into the shape required by the user, resulting in a lighter power bank of the same capacity.

3. 18650 batteries can easily cause a power bank to explode if overcharged or short-circuited, but lithium polymer batteries are less likely to do so.

3. Why use lithium polymer batteries in power banks?

Based on the advantages of lithium polymer batteries mentioned above, it's easy to understand why power banks made with lithium polymer batteries are lighter, more portable, safer, and less likely to explode. Lithium polymer batteries are undoubtedly the preferred choice for lithium polymer batteries by lithium battery manufacturers seeking to better meet customer needs.