How E-Bike Battery Fires Became a Deadly Crisis in New York City
https://www.yahoo.com/news/e-bike-battery-fires-became-120807964.html
Do not bring Li batteries into an apartment or occupied structure. They should be stored in non-flammable structures, either metal, brick or cement/concrete.
Don't overcharge batteries.
Know what to do if one catches fire.
Keep them away from flammable materials.
Make sure the batteries are not counterfeit.
Be cautious of used or damaged batteries.