RE: EOS 0606i memory
One high power charger off a single car battery would be fine but two isn't going to work. A good power supply or two and a 2000 watt generator will work great. As far as LiFe-Po and A123 they are chemically the same. Our MaxAmps.com Green series packs are different in the way that the cell is a prismatic cell like a Li-Po. Foil and flat in shape rather than the odd cylindrical cell like that of the A123 cell. The big differences between Li-Po And LiFe is voltage and capacity. A LiFe cell is 3.3 volt compared to 3.7 of a Li-Po, then there is the capacity issue. LiFe cells are half the capacity of the same shape and size Li-Po cell.
But there is no risk of fire with LiFe cells and they have a much better life span as well as the big feature of being able to handle really high charge rates. You can charge a 4500 6.6 volt Green Series pack at 20 Amps in 18 minutes or at 10 amps in about 30 minutes.