Which Type of Power Bank Battery is Preferable, Lithium-ion or Lithium Polymer?

Sep 03, 2022
Consumer Electronics
Which Type of Power Bank Battery is Preferable, Lithium-ion or Lithium Polymer?

An advanced battery technology known as a lithium-ion (Li-ion) battery makes use of lithium ions as a crucial part of its electrochemistry. Lithium atoms in the anode are ionized and separated from their electrons during a discharge cycle. From the anode, the lithium ions travel through the electrolyte to the cathode, where they rejoin their electrons and become electrically neutral. 

ADVANTAGES

Eco-friendly
Lightweight and compact
High energy density
Low maintenance
Low self-discharge rate


A lithium-ion rechargeable battery known as a lithium-polymer uses a polymer electrolyte rather than a liquid electrolyte. This electrolyte is made up of high conductivity semisolid (gel) polymers. These batteries are employed in applications where weight is important, such as mobile devices, radio-controlled aircraft, and some electric vehicles. They offer better specific energy than other lithium battery types.


ADVANTAGES

Low internal resistance
Thin thickness
High energy density
High voltage
Good safety performance




Lithium Ion

Pros:

  • Cheaper

  • Safer

Cons:

  • Relatively lower energy density


Lithium Polymer

Pros:

  • High energy density so more capacity(mAh) for the same weight/volume.

Cons:

  • Relatively less safe

  • Relatively expensive


Both Li-Ion and Li-Po can be dangerous if overcharged but Li-Po is the more dangerous than the two.



Li-ion is a better Power Bank because:

-High rating in terms of voltage and Ampere hour

-Form Factor

-Performance wise very good(i.e. Life Cycle is more than 2000)

-And is cheap and easily available in INDIA

For Li-po (Lithium Polymer):

High Energy density as compared to Li-ion

But it is having low rating in terms of Voltage and Ampere hour

Form Factor is difficult to achieve

And it's expensive and sourcing is difficult in INDIA.




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