Silver-oxide battery - Wikipedia entry for technology, "also known as a silver-zinc battery" - http://en.wikipedia.org/wiki/Silver-oxide_battery
High Energy Density Silver-Zinc Cells - NASA review of developer of "lightweight high energy density battery optimized for the high cycle life and high energy density requirements". Picture and specifications. - http://www.sbir.nasa.gov/SBIR/successes/ss/9-063text.html
Zinc Matrix Power unveils silver-zinc battery to trump li-ion - claims safer, longer lasting and more environmentally friendly than lithium-ion [Engadget] - http://www.engadget.com/2006/09/28/zinc-matrix-power-unveils-silver-zinc-battery-to-trump-li-ion/