I purchased one last year and it worked great. At the end of hunting season I removed the battery. I purchased a new battery for the upcoming season and now the light does not work. I noticed even when I screw the cap all the way down to make the light come on, I can shake the light and hear the battery moving around, seems to me there is to much slack between the contacts. Is it possible it takes two of those batteries and I lost one when I removed one? Help!!!!!