TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The lithium hexafluorophosphate and/or lithium tetrafluoroborate has a concentration of 1.05-1.6 M. The weight ratio of ethylene carbonate to dimethyl carbonate is 1:1.25-1:3 and the ethylmethyl carbonate concentration is 10-30 wt.% of the total weight of the electrolyte. The lithium salt additive is of formula (I). The lithium salt additive comprises lithium difluoro oxalato borate, lithium bis(oxalato)borate, lithium fluorododecaborate and/or lithium (bis)trifluoromethane sulfonimide. The electrolyte further comprises at least one non-ionic organic additive in a total amount of no more than about 30 wt.% of the total weight of the electrolyte. The non-ionic organic additive is fluoroethylene carbonate, N,N-diethylaminotrimethylsilane, 2,5-dihydrofuran, ethylmethyl sulfone, ~c-butyrolactone, monomer of polyethylene oxide and/or monomer of polyvinylidine fluoride. At -30?o C the battery has a discharge capacity of at least 40% to that of the room temperature. At -40?o C the battery has a discharge capacity of at least 25% to that of room temperature. At -30?o C the battery has a discharge capacity of at least 50% to that of room temperature. The battery maintains at least 60% discharge capacity at 45?o C after cycling for 1500 cycles when discharged from 4.35V to 2.2V at 1C. The battery has a specific capacity of at least 80 mAh/g relative to the weight of the positive electrode active material when discharged at -30?o C from 4.5V to 2 V at a rate of C/10. The battery maintains at least 73% of its discharge energy density at the 3000th cycle at 1C charge and 2C discharge between 4.24V and 2.73V. The positive electrode comprises a lithium metal oxide of formula (Li1+bNi~aMn~bCo~cAl~dO2-zFz). The negative electrode comprises: a lithium intercalation/alloying material; graphitic carbon and/or silicon based material; or lithium foil, lithium metal and/or lithium metal alloy. The lithium metal oxide is of formula (xLi2M'O3.(1-x)LiM''O2). The solvent of the electrolyte contains no more than about 0.5 wt.% carbonate including additional halogenated carbonates besides fluoroethylene carbonate and dimethyl carbonate.b = charge of anion;m = 1-4;n = 1-8;q = 0 or 1;M = transition metal or element comprising groups 13-15 of the periodic table;R1 = organic group;R2, R4 = halo or organic group;X1, X2 = O, S or NR4;b = 0.01-0.3;~a = 0-0.4;~b = 0.2-0.65;~c = 0-0.46;~d = 0-0.15;A1 = Mg, Sr, Ba, Cd, Zn, Al, Ga, B, Zr, Ti, Ca, Ce, Y, Nb, Cr, Fe, V and/or Li;z = 0-0.2;M' = at least one metal ion having an average valance of +4;M'' = at least one metal ion having an average valance of +3; andx = greater than 0.03 to less than 0.6.Provided that both ~a and ~c are not 0. EXAMPLE - No suitable example given.