And these things all have batteries, lithium ion

batteries.

Is that right? That is true.

Lithium ion batteries are actually the number one rechargeable battery that we use.

So it's amazing because it stores all of this major energy in this very tiny spot.

But with that being said, we have to take care of them and we have to respect them.

So big thing with your living room is make sure that you're not charging them wrapped in blankets or in the cushions.

Can you tell us what kind of alarms we should be thinking about? How many should we have? Where should they be?