UL 1642 (UL stands for Underwriters Laboratory)
I will save you the trouble of reading all of it. Go to page 23:
20.1 A battery shall be marked with the manufacturers name, trade name, or trademark and model designation.
20.2 A battery shall be marked with the word ′′WARNING′′ and the following or an equivalent statement: ′′Risk of fire, explosion, and burns. Do not recharge, disassemble, crush, heat above 212°F, or incinerate.′′
You are also welcome to read the rest of the document to see the normal conditions under which batteries can be dangerous.
Btw, your comments have said a lot about your intelligent, or lack of.