I don't have that model, but I just recently got the G3500. I haven't installed it yet, but just opening it up and handling it, I am very impressed with the quality and feel of it. I had originally wanted to permanently install it in my truck, but now, it seems like a waste since it won't be used all the time. (mine came with the ring terminal lead, as well as battery clamps).
While mine isn't the *power supply* model, i feel with my factory dual batteries (diesel), it will do just fine at keeping the batteries happy when camping someplace with shore line hookups.