Hello! I was hoping someone could tell me whether or not if a 4xAAA Battery set up would be too much power for a Nano Biscotte V2 card? I have a 4xAAA battery pack w/speaker I would like to use.(and get rid of) Looking at the V2 specs suggests that you could use 4xAA Nimh rechargable batteries. So I figured 4xAAA duracells should work too. Wrong? Thanks!!