Be sure when you get them to remove the janky keychain it's on. The light is not secured well to the keyring via the crappy little swivel joint thing; one little tug and you could lose the light. You'll understand when you see it, and you can see how I put the light directly on the keyring in my pics.
ETA: By the way, I drained one and let it charge up for 15 minutes or so and it worked. So I guess they really are somewhat solar-powered :thumbup: I looked these lights up, and I think they are either one of these:
http://www.sourcingmap.com/small-po...-flash-light-black-with-key-ring-p-20095.html
http://www.sourcingmap.com/mini-poc...-light-torch-with-key-ring-chain-p-30686.html
According to the first item description, it says 3 hours of light for 30 min charge.