If you do a google of "UN3480" and look at 3&4 (the ICAO ones) in the search it gives you the rules pretty clearly, with a handy flowchart as well. #DGRNerd

Thanks, Ex Cargo Clown.
I see from the flow chart that there is no charge percentage restriction on Li-Ion batteries connected to equipment, so that bit didn't change in April.

Lithium Ion...big deal...yes, a bit dangerous...(and by that I mean...only a teensy weensy bit)...BUT :

I don't see enough talk about Lithium POLYMER (LiPo) batteries...

Those things are exceedingly dangerous and volatile, by comparison to Lithium Ion...yet I know of many people who just pop them in their pockets and fly with them...

Nope. LiPo batteries in the market are simply Lithium-Ion batteries with a soft (polymer) casing. They may have a slightly higher energy densities vs. more common types of Lithium-Ion -- but are otherwise identical from a safety perspective.

They are not inherently any more dangerous. They have a bad reputation because people buy cheap high capacity LiPo batteries from unknown manufacturers in China then wonder why they explode. But a well manufactured LiPo isn't any more dangerous than other well manufactured Lithium Ion batteries.

Lithium-Ion battery trials, 3/4 September 1991.

http://i214.photobucket.com/albums/c...psozjv7zbv.jpg