I hate that every toy that requires batteries nowadays has an annoying screw locking down the battery cover. Even if the battery cover has a latching or hinge that will keep the battery in place, they add a screw to the door. So every time I have to replace the battery, I have to remove the screw or (as most of you probably do) leave off the screw entirely.
I only see these on kids’ toys or mostly 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.