Dell & Sony recalling 4 million batteries

Dell (recall notice) and Sony are working together on recalling 4 million laptop batteries (CPSC notice, Breitbart article) that have been prone to burning, venting with flame, exploding, catching on fire, or whatever other terms you want to apply. My other entries here and here told some more of the story.

Hmm, I use quite a few of these Sony 18650 cells which have been removed from surplus (read: non-functioning, dead, bad, defective, etc.) Dell batteries I get from work. I've been careful with them, but I'll be even more so now!

More about Li-Ion batteries from Battery University.