Abstract: The present invention includes an open-loop AMTEC cell operable in a delivery mode and in a priming mode. In the delivery mode, the cell provides electrical potential through electrochemical reactions, which persist until the ion content of the cell is exhausted. In the priming mode, the electrochemical potential of the cell is established through an outside electrical potential or through a reversal of the thermal gradient within the cell. The cell of the present invention is particularly operable in accordance with a preferred method and also as a component of a suitable electrical system.