<Does anyone know or have they used Lithium AA batteries in their MD-12 drive? If so, were there any problems and how much of an improvement in battery life was there?> <Thanks, Jim Licquia> Jim, That's a great question! I have an MD-12 on my FE, which I use a lot. But, it's never occurred to me to ask this. Then again, I use rechargeable batteries and they seem to last a long time and don't give me any problems. Plus, the speed I get (i.e., the frames per second) with these rechargeable batteries is plenty for me. I don't know if it's possible to get higher speed by using lithium batters. Perhaps someone in this list, who knows what s/he is talking about, can answer this for us. Thanks for thinking of this. Eric D. Doncel California City, CA