Tried to jump start my '08 C4S's my dead battery (from storage) using a Powerpack. Only got a clicking sound when I tried to start the car. The negative terminal, which I had connected to the trunk latch was smoking. The powerpack doesn't require connection to another battery.

My objective is just to get the car to the Dealer to have the battery replaced. Should I have it towed or do you think jump starting it with a service or other vehicle battery is o.k.?