rechargeble batteries For my flash!
I too use the Eneloop batteries from Sanyo - great in my flash, my son's camera, remote controls, wireless mouse, toys, etc.
Costco carries a full kit for about $30-something (I think) and you get the charger, AA size, AAA size batteries and C & D adaptors so you can use AA batteries in your flashlight (I was skeptical, but it works great !! )
Get 'em, you'll love 'em !!!
BigDog Ken Griffith
Sunny Westchester, NY