TheViking, I think Andy is right in going to a different (power) for your light source. We have had really poor results in all types of "AAA" batteries as far as any long term endurance whether on or on standby. The small LED's have real staying power and are good for local lighting, we also carry a small light powered by 2 "C" cells that is just over 7" long and they really last and are bright (krypton bulb). We carry small radios that are powered by either "AAA" or "AA" and again we don't trust the smaller batteries.
just a thought
just a thought