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TSA Limits Lithium Batteries on Airplanes
yali writes "The U.S. Transportation and Security Administration has issued new rules limiting travel with lithium batteries. As of January 1, no spare lithium batteries are allowed in checked luggage. Batteries carried in the cabin are subject to limitations on per-battery and total lithium content, and spare batteries must have the terminals covered. If you're returning home from the holidays with new toys, be sure to check out the new restrictions before you pack."
From the TSA webpage, it does apply to some Lithium-Ion batteries.
Batteries up to 8-grams "equivalent lithium content" installed in devices or as spares are allowed. For Lithium-ion batteries between 8 and 25 grams aggregate lithium equivalent content are also allowed, but you can only have 2 total (both spare and installed).
Lithium Metal batteries just have tighter restrictions.
As for the reasons behind this (since some apparantly didn't read TFA)- it sounds like there was a cargo hold fire on one plane caused by lithium batteries and apparently the current fire control systems in planes can't handle lithium fires.
Figures the one time I don't have mod points is the one time I see a post by someone who obviously didn't read the actual links. Lithium batteries are NOT "now illegal to carry". There's just some rules being put in place for when they can be in checked baggage or must be carried on, and how they must be stored. Looking at the actual page on the subject, it looks like they went to great lengths to make sure it won't directly impact most travelers with regards to the batteries people tend to travel with. On that note I see nothing anywhere suggesting that this has anything to do with terrorism. And as you say if it's "to reduce the possibility of a lithium battery shorting out" then they can be in their shipping packages and be "no more dangerous than many other items that you can carry on planes". Which is exactly what they suggest for storing spare batteries.
I'm all for government conspiracy theories and thinking most of this stuff is completely idiotic. But nothing is going to improve if we go around making grossly inaccurate statements about what a rule actually is.
I am a commercial pilot. I've had a large battery go into thermal runaway in flight. It scared the hell out of me. The flight crew put it in a metal trashcan (so the firefighting gloves are a good idea) and I had depresurized and was going to toss it out over Kansas when it stopped venting and pulsing. I didn't see it; I was on oxygen up front, but my crew really wanted to throw it out even though it stopped pulsing.
So yeah, this is an annoyance, but, in retrospect, I think it's a good idea, and thinking about the spare laptop battery showed into a pocket with some random AV cables, it could light off the overhead compartment before anyone notices.