I have two LED ropes that are about 4' long that run off of 2 AA batteries each. I put the good Lithium batteries in them and they lasted me all season. I liked that they put out good light and I didn't have the extra weight of a gel cell battery. I bought them at Gander Mountain about 3 years ago but haven't seen them sold sense. If anyone knows where I can get more like this let me know. I'm buying a one-man tent and would like to install them in that when I get it.