i'd say heat may be a likely culprit.
post office trucks are not insulated, so they won't cost shit, this means that during the winter, they get frozen and during the summer they get cooked.
maybe insuring the package gets it handled better and maybe placed on an insulated truck.
dunno.
but, they obviously pay more attention to the care of the package.
i don't think battery powered stuff can't be insured, i was just saying it was restricted. what this means for us, i don't know exactly. they might just want to put an extra sticker on it. they might also say that to get them out of trouble when batteries get ruined in unisured packages.
i'll ask my friend whats up with insured packages, what they do or do not go through on the way.
aside from all that, we've learned the hard way.
so, when i get it and have to pass it on, i will insure it, and let's get that going for the rest on the list as well.