FCH-II has 2 cells serially connected. Every cell has single side air cathode and magnesium plate anode inside. Just add the salt solution into pack through the water inlet on top side, then electricity is generated as the metal is consumed; when the metallic plates are used up, you just replace them with new ones and replenish either saltwater or seawater acting as electrolyte so that FCH-II can continue to generate electricity.
Small, fashion and lightweight;
No need of charge maintenance;
Easy and convenient to operate;
No capacity loss during 10 years' dry storage;
Environmental friendly, no toxic gas emission.