I have tried the rechargable thing and didn't like it. Most of my stuff uses AA's, a couple use AAA's, and I have two cell C-123's flashlights all over the place. I get my AA and AAA needs filled at Costco, Duracell AAA's and Kirkland AA's. I had a bunch of Sanyo C-123's, but after the recent posts about foreign made batteries exploding I found a pretty good source for Duracell 123's and bought a bunch. I didn't toss the Sanyos, just put them in a ziploc bag and stuck them in my vehicle as dire emergency spares. I have a very un-fancy rotation plan for swapping new batteries for older, but I usually go through them so fast that isn't much of a problem...