There are likely billions of abandoned devices with lithium batteries sitting the in the back of drawers all over the country, and fires from them randomly burs

There are likely billions of abandoned devices with lithium batteries sitting the in the back of drawers all over the country, and fires from them randomly bursting into flames seems pretty rare. But even if 1000 of these things burst into flames a day, that is still 0.04% chance of any given device burning up in a year.