Hello Steve, I regret returning my v1 just because the switch went bad and Am probably going to buy another soon. I have a question about 6v configurations... I like the next 3.7V model coming out and was wondering if you would ever consider a 6V dual 3.7V "AA" size unit? Maybe like two batts side by side and the atty on top in the middle? Just a thought... I think I would be nice. I might mod one one with pcb lions but you would probably make a nicer unit... Just a thought... Rich