I purchased GridBoss, FlexBoss, and two WallMount Indoor batteries. The Batteries came with 2/0 wires (Degson connector on one end and no connector on the other end). My question is: since the FlexBoss has two Positive connectors and two negative connectors, can I connect Battery 1 with one pair of wires to FlexBoss and Battery 2 with a pair of wires to FlexBoss or do I connect Battery 1 with two pairs of wires to FlexBoss and use Parallel Kit wires 2/0 to connect Battery 2 to Battery 1 ?