TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Properties: The cell delivers greater than 70% of the available discharge capacity of the electroactive sulfur-containing material upon initial discharge at C/10 rate.The cell is a primary or secondary cell.Preferred Components: The electroactive sulfur-containing material comprises elemental sulfur.The sulfur-containing material is a polysulfide moiety of formula (-Sm-), comprising covalent -Sm- moieties, ionic -Sm-- moieties, or ionic -Sm2-- moieties, in which m is an integer greater than 3, preferably greater than 6. The polymer backbone chain of the sulfur-containing polymer material comprises conjugated segments. The polysulfide moiety is incorporated into the polymer backbone chain of the sulfur-containing polymer material by covalent bonding of the polysulfide moiety's terminal sulfur atoms. The sulfur-containing material comprises greater than 75 wt.% sulfur.Preferred Process: The increased storage life of the cell occurs prior to discharge of the cell. The components of the electroactive sulfur-containing material are dissolved in the non-aqueous electrolyte at 0.05-1wt.%, preferably 0.1-0.5 wt.%.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compounds: The organic sulfites are dimethyl sulfite, diethyl sulfite, dipropyl sulfite, dibutyl sulfite, dicyclohexyl sulfite, ethylene sulfite, propylene sulfite, or butylene sulfite, preferably ethylene sulfite or dimethyl sulfite.The non-aqueous solvents are dimethoxymethane, trimethoxymethane, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, propylene glycol dimethyl ether, tetrahydrofuran, 1,3-dioxolane, 1,4-dioxane and/or glymes.Preferred Composition: The non-aqueous electrolyte comprises 0.1-10vol.%, preferably 0.5-5 vol.% of the organic sulfites.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Materials: The lithium salts can be lithium bromide, lithium iodide, lithium-sulfur-cyanide, lithium boron fluoride, lithium-phosphorus-fluoride, lithium arsenic fluoride, LiCF3SO3, LiN(CF3SO2)2, LiN(CF3CF2SO2)2, or LiC(SO2CF3)3, preferably lithium bis(trifluromethylsulfonyl)imide.    TECHNOLOGY FOCUS - METALLURGY - Preferred Material: The anode comprises lithium compositions comprising lithium metal, lithium-aluminum alloys, lithium-tin alloys, lithium-intercalated carbons, and/or lithium-intercalated graphites. EXAMPLE - A comparative cell was made by preparing a cathode of a 17 micron thick conductive carbon coated aluminum foil substrate additionally coated (30 microns after drying) by a mixture (wt%) dispersed in isopropanol of elemental sulfur (75), PRINTEX XE-2(RTM; conductive carbon pigment) (15) and PYROGRAF-III(RTM; carbon filaments) (10). Also provided were an anode of lithium foil (50 microns), an electrolyte of lithium bis(trifluromethylsulfonyl)imide (1.4M) in 1,3-dioxolane, dimethoxymethane and tetraethylene glycol divinylether (40:55:5) and a porous separator of E25 SETELA(RTM; polyolefin separator) (16 micron). The components were combined into a layered structure of cathode/separator/anode, wound, compressed and immersed in the electrolyte. The cell was sealed in a foil pouch.    An inventive cell was also made in the same manner with the addition of ethylene sulfite to the electrolyte to give concentration of 1vol% of the electrolyte.    The cells were tested for storage ability, open circuit voltage (OCV) and thickness measurement.    The comparative cell showed initial thickness of 5.65 mm and initial OCV of 2.99 V. After 3 days at room temperature these values were 12.78 mm and 2.21 V and after 14 days at 60degreesC they were 13.88 mm and 2.18 V.    The inventive cell showed initial thickness of 5.66 mm and initial OCV of 3.05 V. After 3 days at room temperature these values were 6.18 mm and 2.87 V and after 14 days at 60degreesC they were 6.22 mm and 2.88 V. We see an improved OCV over time and much lower thickness over time.