TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The salt (S1) comprises at least one member selected from Li2B10H0-7(Z')3-10; Li2B10Cl10, Li2B10H1-5Cl5-9; Li2B10Cl5-9(OR)1-5; Li2B10H2Cl8; Li2B10H0-7(OCH3)3, Li2B10Cl8(OH)2, Li2B10Br10, Li2B8Br8, Li2B12Cl12 and Li2B12I12. The lithium fluoroborate has a reversible oxidation potential of 0.1 - 1 volt above the voltage of the cell. The lithium fluoroborate salt is added in an amount of 3 - 70 wt.% by weight of the total weight of the nonreversibly oxidizable salt and the salt that provides overcharge protection present in the cell. The salt (S1) comprises at least one member selected from Li2B12F12 Li2B12Fx'H12-x'; Li2B12FxaCl12-xa; Li2B12Fxb(OH)12-xb; Li2B12F10(OH)2, Li2B12F5H7 and Li2B10Cl10. The salt (S1) comprises a salt of formulae Li2B10X'10 or Li2B12X'12. The salt (S1) comprises salt of formulae Li2B10F8-10(Zb)0-2 or Li2B12F10-12(Zb)0-2.Z' =Cl or OR;R =H, alkyl or fluoroalkyl (preferably H, 1-8C alkyl or fluoroalkyl);x' =10, 11 and/or 12;xa =6 - 11 and/or 12;xb =10 and/or 11;X' =H, F, Cl, Br, or OH; andZb =H or Cl.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The electrolyte (E2) further comprises at least one nonreversibly oxidizable salt. The acid will not substantially hydrolyze to generate hydrogen fluoride (HF). The acid comprises a substituted boron containing Lewis acid. The boron containing Lewis acid comprises at least one member selected from borane, boronate and borate. The boron containing Lewis acid comprises tris(pentafluorophenyl) borane. The at least one carrier comprises an aprotic organic containing at least one member selected from dimethyl carbonate, ethyl methyl carbonate, diethyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, dipropyl carbonate, bis(trifluoroethyl) carbonate, bis(pentafluoropropyl) carbonate, trifluoroethyl methyl carbonate, pentafluoroethyl methyl carbonate, heptafluoropropyl methyl carbonate, perfluorobutyl methyl carbonate, trifluoroethyl ethyl carbonate, pentafluoroethyl ethyl carbonate, heptafluoropropyl ethyl carbonate, perfluorobutyl ethyl carbonate, fluorinated oligomer, methyl propionate, butyl propionate, ethyl propionate, sulfolane, 1,2-dimethoxyethane, 1,2-diethoxyethane, tetrahydrofuran, 1,3-dioxolane, 4-methyl-1,3-dioxolane dimethoxyethane, triglyme, dimethylvinylene carbonate, vinylene carbonate, chloroethylene carbonate, tetraethyleneglycol, dimethyl ether, polyethylene glycol, sulfone and gamma-butyrolactone. The nonreversible oxidizable salt comprises lithium. The nonreversible oxidizable salt comprises at least one member selected from lithium perchlorate, lithium hexafluorophosphate, lithium hexafluoroarsenate, lithium hexafluoroborate, lithium trifluoromethylsulfonate, lithium tetrafluoroborate, lithium tetrakis(pentafluorophenyl)-borate lithium bromide and lithium hexafluoroantimonate, LiB(C6H5)4, LiN(SO2CF3)2, LiN(SO2CF2CF3) and/or lithium bis(chelato) borate. The salt (S1) comprises at least one lithium fluoroborate selected from compounds of formulae Li2B10Fx(Za)10-x and Li2B12Fx(Za)12-x.x=at least 3 for the decaborate salt and at least 5 for the dodecaborate salt;Za=H, Cl, Br or ORd; andRd=H, 1-8C alkyl or fluoroalkyl. Preferred Definitions:    M =at least one member selected from alkali metal, alkaline earth metal, tetraalkylammonium and imidazolium (preferably lithium);    Q =at least one member selected from closo-borate anion of formula (B8-12Z8-12)2- ; closo-ammonioborate anion composition of formula ((R'RaRb)NB8-12Z7-11)1- ; and closo-monocarborate anion composition of formula (RcCB7-11Z7-11)1- (preferably closo-borate anion of formula (B8-12Z8-12)2-);    Z =F, H, Cl, Br or (OR);    R =H, alkyl or fluoroalkyl (preferably H, 1-8C alkyl or fluoroalkyl);    R', Ra and Rb =H, alkyl, cycloalkyl, aryl and/or polymer;    Rc =H, alkyl, cycloalkyl, aryl and/or polymer;and    a =2.    N is bonded to B. Rc is bonded to C.    EXAMPLE - A coin type cell battery (diameter 20 mm, thickness 3.2 mm) comprised of a positive electrode, negative electrode, separator and electrolyte was prepared at room temperature. The positive electrode containing LiMn2O4 (positive electrode active material) (84 wt.%), carbon black (conducting agent) (4 wt.%), SFG-6 graphite (conducting agent) (4 wt.%), polyvinylidene fluoride (binder) (8 wt.%) on an aluminum foil current collector. The negative electrode containing mesocarbon microbeads (MCMB) (anode active material) (92 wt.%), polyvinylidene fluoride (binder) (8 wt.%) on a copper foil current collector. Celgard 3501 (RTM: separator) comprised of microporous polypropylene film. The electrolyte was a 0.4 M solution of Li2B12F9H3 in 3:7 by weight ethylene carbonate (EC) : diethyl carbonate (DEC). The cell was charged and discharged multiple times at a C/3-rate constant current of 3 - 4.2 V. Rapid capacity fade was observed with complete capacity fade occurring over 80 cycles.