Every toy that requires batteries nowadays has an annoying screw, locking down the battery cover. Even if the battery cover has a latch or hinge that will keep the battery in place, they add a screw to the door! Every time I have to replace the battery, I have to remove the screw or leave off the screw entirely next time (as I think many of you probably do).
I mostly see these on kids toys or devices. So I assume it’s a regulation to keep kids from getting into the batteries. I’ve searched the interwebs and have only found a regulation requiring a child protection mechanism for devices that use ‘button’ batteries; not the AA/AAA cells that power most kids toys.
I created this video to rant about this issue and hope that somebody can share a link to a specific US consumer product regulation.