Difference Between Lithium-ion Battery and Lithium-Polymer Battery

Comparison between two of the most popular batteries i.e Li-ion and LiPo batteries on various parameters.

Lithium-ion Battery vs Lithium-polymer Battery

In the below table, we covered all the parameters of both lithium-ion and lithium-Polymer battery.

ParametersLi-ion batteryLi-polymer battery
Usable voltage range from 3V to 4.2VFrom 3V to 4.2V
Energy densityHigh energy densityLow and decreased cycle count compared to Li-ion
WeightRelatively heavierLight weight
Safety/Explosive riskMore volatile as compared to Li-PoMore safety. Less chances to explosion
Charging durationRelatively longer chargeShorter charge
CostCheaperSlightly expensive
Capacity Relatively lowersame volume Li-Po batteries, capacity is around 2 times of Li-ion battery
Life spanLongLong
AgingLoses actual charging capacity over timeRetains charging capacity better than Li-ion
Temperature range usage-20 to 60º C-20 to 70º C
Impedance<100 mΩ<50 mΩ
Charge temperature 0 to 40º C0 to 40º C
Storage temperature-20 to 35º C-20 to 35º C
ApplicationsUsed in power backups/UPS, Mobile, Laptops, and other commonly used consumer electronic goods. Also used in Electric mobility and Energy Storage SystemsMostly used i radio controller equipments and aircrafts,Mobile, laptops and other commonly used electronic products. Also, used in Electrical vehicles.

Hope this article helps you to understand the actual difference between Lithium-ion and Lithium- Polymer battery. 

Lithium-ion Battery

The most significant difference between lithium-ion and lithium-polymer batteries is the chemical electrolyte between their positive and negative electrodes. Both lithium-ion and lithium-polymer batteries have their pros and cons. Typically, the advantages of a lithium-ion are their high power density and lower cost than lithium-polymer battery. Lithium-ion batteries are incredibly efficient.  Li-ion in a more flexible casing. 

Lithium-ion batteries are inherently unstable, suffer from aging, and are potentially dangerous. As Li-ion batteries have become more popular in

Lithium-Polymer battery:

On the other hand, Li-Po batteries are generally robust and flexible.  Especially when it comes to the size and shape of their build.

They are also lightweight, have an extremely low profile and have a lower chance of suffering from leaking electrolyte. But Li-Po batteries aren’t perfect as they are significantly more costly to manufacture and they do not the same energy density nor lifespan as a lithium-ion.

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