Maybe it's a sort of build-quality proxy. Someone bringing 150 "lipstick" single-cell promotional chargers -> bad Someone bringing one phone and one laptop ba

Maybe it's a sort of build-quality proxy. Someone bringing 150 "lipstick" single-cell promotional chargers -> bad Someone bringing one phone and one laptop battery pack -> OK If you are limited to two, you are probably not bringing anything that is near e-waste quality.