lifep04 from HK

[amberwolf]

Only point i'm trying to get across here is that 'lipo' refers to the format, not the chemistry.

I think that what is confusing people here is that you almost seem to be saying that the pouch style is what makes it LiPo (lithium polymer), but this isn't the case.

The "polymer" part is simply designating that it uses a polymer separator (or electrolyte) between layers, which AFAIK *all* of the various lithium chemistries we use here on ES and are familiar with use. This is what I was trying to point out when I replied the first time.

It doesn't matter if it's a pouch or a cylinder or a box (prismatic); they are all using polymer separator layers.

So yes, LiPo doesn't say anything important about what kind (chemistry) of battery it is, but it also doesn't say anything about it's format, either (where format means it's physical shape).

Does that make sense?

 

[neptronix]

But i have never heard any company call a cylindrical cell a lithium polymer cell. Have you?
I have only heard lithium polymer be labeled as pouch or prismatic form.

You take my argument even further and state that lipo basically means... nothing :lol:

Too bad battery sellers continue to propagate the sillyness.
Or even worse, call everything 'lithium ion'..... yeah that's real descriptive

Can we all agree that lipo says nothing about the chemistry then?

( where is liveforphysics when you need him; )

 

[neptronix]

http://www.hardingenergy.com/index.php/lithiumpolymer

Lithium Polymer Ion batteries provide the performance of the Li-ion in a thin or moldable package. They do not use a volatile liquid electrolyte and can sustain significant abuse without explosion or fire.

The lithium polymer uses a polymer gel electrolyte to replace the traditional liquid electrolyte. Lithium-polymer finds its market niche in wafer-thin geometries, such as batteries for credit cards and other such applications. Expected cycle life is about 500+ cycles.

I've read things like this before and the common usage seems to be talking about the electrolyte being in a gel format ( more like a thick gel ) rather than liquid ( what can be seen oozing out of a cylindrical cell if punctured and fire is not present. )

 

[amberwolf]

Well, I may be misunderstanding; I am summarizing what I have read (mostly here on ES) but my memory might be misleading me.

But yes, AFAIK as a descriptor "LiPo" gives us almost no useful information about a battery, other than that it is a lithium-based chemistry.

I'm sure LFP could tell us more certainly if I am generalizing too much, though.

 

[ElectricEd]

Well, how about all of that above?
We've all learn't something.
I'll have to be more explicit in future. 8)