Letter Re: Shelf Life of Batteries?
Mr. Rawles, You had an inquiry on your site about long term storable charged batteries. Such a topic came up recently on the amateur radio reflector called hfpack. There is one such battery that is well suited for storage. It is called a silver chloride battery, and they are activated by adding salt water. One use is in torpedos – see http://www.naval-technology.com/contractors/electrical/hbl/. Another source of information is at: energy.sourceguides.com. These have a high energy density, but are primary cells and not rechargeable. Still, if you plan for an urgent one time need arbitrarily in the future, silver chloride batteries may …