Pros of Lithium Polymer(pouch cells):
LiPo’s hold the highest voltage under load of all lithium batteries so they perform well in high amp draw applications
LiPo batteries come in many different form factors so they can be built to fit lots of applications
Maintains lower temperatures under high discharge
Cons of Lithium Polymer(pouch cells):
LiPo’s are more prone to thermal runaway when punctured or damaged
LiPo batteries provide around half the life cycles of a Li-Ion
Can be discharged down to 3v per cell
Pros of Lithium ion(cylindrical cells):
Li-ion batteries are higher energy density(Wh/kg) which allows for longer runtimes and lighter weight
Lithium-ion batteries are safer than lithium polymer because of the metal enclosure
Can be discharged down to 2.5v per cell
Cons of Lithium ion(cylindrical cells):
In high amp draw applications, they will have lower voltage under load compared to lithium polymer
They are round cells in specific sizes which can create some limitations to fit in certain applications
They tend to hold higher temperatures during and especially after performing a higher discharge rate
We hope this gave you a better idea of what is better for your application.
We have make below tips for your easy understanding:
If you are looking for the highest voltage under load(punch or top speed) then choose a LiPo.
If you are looking for the highest capacity for the weight(energy density), choose Li-ion.
If safety is a big concern, then choose Li-ion.
More information on which is better for your application, please contact our battery tech team by clicking here; we would love to help.