The TSA has announced a ban on loose non-rechargeable lithium batteries in checked luggage, because they’ve realized that “fire-protection systems in the cargo hold of passenger planes can’t put out fires sparked in lithium batteries.”
Well, that’s not good.
From the AP:
Passengers can still check baggage with lithium batteries if they are installed in electronic devices, such as cameras, cell phones and laptop computers. If packed in plastic bags, batteries may be in carryon baggage. The limit is two batteries per passenger.