Same in Europe. No idea what they do either. I've only put a laptop in my checked luggage once, in 2000 when it was still permitted. It was one with NiMH cells

Same in Europe. No idea what they do either. I've only put a laptop in my checked luggage once, in 2000 when it was still permitted. It was one with NiMH cells by the way which don't have a tendency to catch fire but they suck in other ways (energy density, memory effect). That's why nobody uses them anymore. It arrived with a cracked screen so never again...