Wish I had the ID to be buying the battery for Doug ! I suspect that sellers within US & Canada are probably governed by similar laws as European ones. The problem arises when buying from countries that have less strict laws and regulations. The battery should have had a thermal cutout built into it to meet with European regulations but was bought from a seller in Hong Kong, China.

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html