They are safe barring manufacturing defects. The large enterprise I worked for had 6 fire incidents over 4 years, 5 of which were in a single lot of laptops. (~

They are safe barring manufacturing defects. The large enterprise I worked for had 6 fire incidents over 4 years, 5 of which were in a single lot of laptops. (~2000 laptops out of ~150k total) Swelling is much more common (I’d estimate hundreds of incidents over a similar period). IT teams should have procedures for high risk batteries and containment plans for each significant location. In most cases that means 5 gallon buckets with cat litter or vermiculite.