Not just junk but the fact that lithium batteries are kinda dangerous. They aren't just regular batteries and shouldn't be treated as such.
THIS!
I made 9v Lithium Batteries for 3 years. Lithium is very unstable, and care must be taken with lithium batteries.
Treat them with care, and they are safe, however
DON'T over-discharge them. If they get to hot, POP and you can have a bit of a fire on your hands. Water + lithium = fire. Careful there, too. Dispose of properly by recycling. WRAP electrical tape around the battery, to keep the terminals from shorting.