Hi, lookin' to buy a new flashlight, my old mobile was my old flashlight now i've sold it i'm in the dark recently looking at some websites, who are selling LED flashlights. I want something powerful, but not too expensive. How often does one have to charge/ get new batteries for .. say.. a 5watt LED flashlight? Also, some say that the flashlights are AA batteries but at the same time require 3.6v. ie: http://www.qualitychinagoods.com/ultrafirereg-cree-1xaa36v-rechargeable-p-615.html Does this mean it's some special AA battery or just standard? It's my understanding that all AA's are 1.5volt. Also, if anyone has got any flashlights to suggest for the sub $30 mark, preferrably sub $20, fill me in. Thanks in advance.