Thanks for all the info. I picked up a couple of 4 AA battery holders at Radio Shack. Wiring was minimal. I put in 4 Energizer Ulitmate Lithium AAs. So far I have run time tested them at over 4 hours on high and still going strong. I will let you know the final results when the AAs finally give out. But even at 4+ hours I think I have my solution. These laterns will work for a whole evening and more on one set of batteries. Additional batteries can be stored without fear of losing charge even if its 5 years to the next power outage. I am also giving them a couple of extra LED laterns I had sitting around that have run times of up to a week. So they should be set. By the way a side note when I looked at the tech sheet I inadvertenetly looked at the advanced lithium not the ultimate, the ultimated are actually rated 2 AMP not 1.5.