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Lithium ion vs. lithium polymer power bank: Which is better?

lithium ion vs lithium polymer

Lithium ion vs lithium polymer power banks ; which is better? That is one question I will gladly answer in this post. All power banks run on batteries and some can last better than others. We cannot just conclude on which power bank is the best because we need to know the differences between polymer and lithium ion batteries. We must have come across these two battery types somewhere before. When you check the battery of some smartphones, you will see something like Li-ion (lithium ion) or Li-poly (lithium polymer) battery. What do these things really mean? We will find out in this post.

We can find these two types of batteries around you these days but there is something that differentiates the two and we are about to find out what it is.

Lithium Ion Batteries

A typical lithium ion battery cell contains  3.7V of voltage. However, there are some devices that may carry the 3.7V thrice. Some laptops have 11.1V written at the battery area. When you calculate this, one can see that 3.7 x 3 is 11.1. This means that the laptop contains three battery cells. Some laptops may contain six cells and so on.

Lithium ion is safer and has a lower density than the lithium polymer battery. The first lithium ion battery was sold by Sony in 1991. Many other companies saw this innovation from Sony and decided to go into the business. Now, there are billions of lithium ion battery scattered across the world with the aid of technology.

Lithium ion batteries are cheaper than lithium polymer, hence their abundance. Lithium ion batteries also damage easily than lithium polymer. Lithium ion batteries also age quickly than polymers but they are very durable. In fact, some lithium ion batteries last up to 5 years in some devices. They cause small harm when they are disposed and must not be exposed to too much heat. Lithium ion batteries are also fragile and may require a protection circuit to maintain safe operation and keep it from getting easily damaged by external factors or electrical surge.

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Lithium ion batteries were developed around the early 1990s but it was not until 1991 before they were put in the market by Sony. Lithium batteries don’ need require priming when used and have a low self-discharge. The chemical reaction varies depending on the electrolyte. They are mostly used in cell phones and laptops.

Lithium Polymer Batteries

These batteries work based on intercalation and de-intercalation of lithium ions from a positive electrode material and a negative electrode material, with the liquid electrolyte providing a conductive medium. Lithium polymer batteries have been in existence since the 1970s. They started as a dry solid polymer electrolyte that looked like a plastic film.

They are more expensive than lithium ion batteries and have a better safety procedure. These batteries can also be used to create the thin designs of credit cards and still be in a durable condition. These types of batteries have lightweight, are more expensive and are safer than the lithium ion battery.

Like lithium ion batteries, their chemical reaction varies according to their electrolytes. There isn’t much difference between these two batteries in chemical reaction. They are malleable and the company producing them can make them into different shapes. We can also use them in cell phones and some mobile devices. It has an improved performance when in low and high temperature.

I know many people can conclude that the lithium polymer is the better choice due to the sleekness and some other features it has, but you should also keep it in mind that they are more expensive to manufacture than lithium ion batteries. Lithium ion batteries are cheaper and have better density than the lithium polymer batteries.

Most Smartphones batteries are lithium-ion batteries but you can also find lithium polymer batteries in some Smartphone. Do not keep lithium polymer power banks in a near-freezing condition in order to avoid damage.

One shocking fact many people don’t know is that lithium-polymer batteries are actually lithium-ion polymer batteries. But does that make them the same thing? Not really.

The only difference is that lithium ion polymer batteries are actually lithium ion batteries which they fit in a flexible polymer case that makes it suitable to bend to the shape the manufacturer wants. Lithium ion batteries can only fit into a plastic that makes it have a higher density than the latter. Lithium polymer batteries contains a micro porous electrolyte which replaces the traditional porous separator.

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The lithium ion polymer battery is only slightly more expensive than the lithium ion battery. However, there is also something like a lithium-polymer battery. What most manufactures term “lithium polymer” is the “lithium ion polymer” battery. The real lithium polymer battery uses a polymer as the electrolyte in the battery instead of using a liquid electrolyte. They never actually sold the real lith.ium polymer battery because of performance issues at room temperature.

Lithium ion vs. lithium polymer power bank

Now, it is time to answer the big question on our minds; Lithium ion vs lithium polymer power bank, which is better?

From the looks of things, you can see that we didn’t really specify which is a better option to pick between lithium ion and lithium polymer, but one thing we do know is that it depends on your choice. There are some lithium polymer power banks that are better than lithium ion power banks and vice versa. So whatever you choose depends on you.

While some people may prefer lithium polymer to lithium ion because of its lightweight and safety, some people prefer lithium ion because it is relatively affordable and has a high density than the lithium polymer. If you have the cash, you can get a lithium polymer power bank and if you prefer to save your money, get a lithium ion power bank. Both are good either way.

Many people also take the design  of the power bank into consideration. Most lithium polymer power banks usually have cool designs and so people opt for them but many other people also prefer the lithium ion because of their simplicity and cheapness. Whether you want a Lithium ion vs. lithium polymer power bank, the choice is solely based on you.

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