Same here. It was kinda funny (in a pathetic sort of way) watching those two bozos scratching their heads and holding it up to a wall chart. What's it fit? he asked,,,, (like he would be able to look that up in his book). Then they called their warehouse and they had never heard of an 18650 either. it would have blown their circuit if I had asked for a 14500,, OH Yea, That's a AA battery,,,