I picked up a few of these as stand-by beater lights. They work with a single AA, or with a 14500 lithium battery. They have been decent so far. I gave one to a friend, who uses it as a back-up bicycle headlight, which is handy with its three modes (high, low, and strobe) and zoom.

It isn't the best quality in the world. I won't pretend it is. But rain won't kill it, and it's a push-button 200-300 lumens (depending on battery) that can live in the junk drawer, BoB, or glove box without investing in name brand flashlights.

http://www.amazon.com/gp/product/B006E0QAFY/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1

Oh: The image is a bit misleading. The light is short. Just be aware.