RE: A123 Battery Question.
I have been useing the 1100ma cells in 2s and 4s packs and it took them quite a few cycles before they "settled down" (5 to 10). I use the 2s for RX power in sailplanes and fuel jobs and 4s as power packs with sailplane with power pods. Charles (everydayflyer) has done a lot of research and testing on these cells and he bench cycles his several times before he even uses them. The imbalance in the discharged state is normal for mine but come in as they are charged. I very seldom have to balance them at all now and have many cycles on them. They are great for my use!!!
Good Luck
Bob