The Difference between Lithium-Ion and Lithium-Polymer Batteries

Abhishek Kumar
2 min readMar 25, 2019

A battery is a major part of a smartphone. There so many types of batteries used in the phones but the most in use are Lithium-Polymer and Lithium-ion.

Lithium-Polymer or Lithium-ion? It seems like an endless debate on batteries in modern consumer electronics. In this blog, we are going to talk about the difference between Li-Poly and Li-ion batteries.

What is the difference between these two?

The lithium-ion battery is a rechargeable battery format. This battery first got immense popularity in with the adoption by major electronics companies in the 1990s. Li-ion is an important group of very fixed electricity producing blocks which consists of three pieces: a positive electrode, negative electrodes and electrolytes or liquid compounds between the other two. The lithium-ion batteries usually include an electronic controller, which manages power and discharge flows so your battery does not overheat or explode.

The most notable difference between Li-Po and Li-ion batteries are the chemical electrolyte between their negative and positive electrodes. In Lithium-ion batteries it is not liquid. Although Lithium-Polymer technology works on one of three types: a dry solid, a porous chemical compound or a gel-like electrolyte.

Which is the best?

Both batteries have advantages and disadvantages. The benefit of Li-ion is its higher density and lack of the memory effect, and their notably lower cost than Li-poly batteries. In short Li-Ion batteries are exceptionally efficient.

On the other hand, Li-poly batteries are usually robust and pliable, mostly when it comes to the size and shape of their build. These batteries are also lightweight and have a lesser chance of suffering from leaking electrolyte. But they are also not perfect and are costly to manufacture. Also, they do not have the same energy density or lifespan as a Li-ion.



Abhishek Kumar

A Passionate Writer with love for Technology. I love discovering new gadgets and writing about smartphones. However, do not let technology take away your sleep.