My LS1 running on a single AA is the brightest single AA flashlight I've ever come accross with no exceptions. Before finding 123s for $1.25, it was my preferred configuration due to it's small size and ample light output.
I appreciate and understand the innovation and progress of the latest Arc LS flshlights, but the Version 1's ability to a single, commonly available AA battery is a feature I wish had not been abandoned.
The LS is a scorcher on a 123 battery and is now my preferred cell, but in remote locations, they can be difficult to find and terribly expensive. Sure, I can use a 2 x AA battery holder, but this greatly increases the size of the light and requires me to carry extra parts to have the ability to switch between battery types.
I've modified my LS rev 1 with a high-dome Q3 Luxeon and modified the 1 x AA battery pack to be able to use 123, AA and AAA batteries. IMHO, with a bit of waterproofing, the Arc LS version 1 is darn near the perfect EDC flashlight ( for me anyway). /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif I've tried EDCing SF L4, Firefly, Arc AAA, and countless others, but nothing compares close to the features of this flashlight!
Over the summer, I took my family on a cave tour. Half way throught the tour, my LS switched to moon mode. I had neglected to carry a spare 123 so I stole a AAA battery from my digital camera and was back un business again. I LOVE this flashlight!
Because of this utility, I can't see myself changing EDCs any time soon. I may have to change my tune when the LS4 is released. /ubbthreads/images/graemlins/wink.gif