Quote Originally Posted by Another Kevin View Post
Are you guys talking about some sort of particularly robust keychain LED light? I've wound up not carrying them even on my keychain, because even if I don't use them, they stop working after a few weeks in my pocket. I can't imagine how much faster they'd quit in my backpack!
I've had one of these clipped to my pack for ages. I don't think much about it. I give it a quick test every now and then to make sure it's still working, and it always is... going on several years now.