RE: Uneven Batt voltage draw
Hi Johnny,
With A123 packs this is not uncommon, especially at low battery discharges (<30%). A123s have such a low impedance they do not equalize in voltage as well as other battery types. A123 packs MUST be balance charged and a lot of chargers do not balance the A123s well. You should consult the Fromeco website for the chargers they have tested that actually do a good job of balancing A123s.