Li-Ion or Li-Polymer?

I've noticed the same thing with my new MacBook Pro (W8616), I pulled the battery out the other day and it says Li-Ion.

Which says to me that its Lithium Ion, not Lithium Polymer.. which begs the question, why in the specs does it say Lithium Polymer yet on the battery it says Lithium Ion

The “Lithium Polymer” batteries are a kind of “Lithium Ion” battery. In fact, all electrochemical energy storage is at root an ionic technology.

As always, there’s a lot of good information on this at Wikipedia:

• Lithium Ion Battery

• Lithium Ion Polymer Battery


Here’s an fascinating remark from the first of those pages:

“In April 2006, a group of scientists at MIT announced that they had figured out a way to use viruses to form nano-sized wires that can be used to build ultrathin lithium-ion batteries with three times the normal energy density. Science Express (preprint) <a href='http://www.sciencemag.org/cgi/content/abstract/1122716'[7]”


RRS

iMac 20" Core Duo; MacBook Pro Mac OS X (10.4.6)

It may very well still be Li-ion. The polymer batteries are also Li-ion, just they have different substrates.

Er. That should read that "it may very well still be polymer."