NOVELTY - Battery (140) pack (B1) comprises control system and not greater than 130 or 110 lithium ion pouch batteries connected in series generating average voltage of at least 400V or 315V with 50% or 60% depth of discharge and having energy capacity at full discharge of at least 15 kilowatt-hours based on full depth of discharge, where each lithium ion battery has thickness of 7-18 mm and planar area of 25000-50000 mm2, and positive electrode (144) comprises active composition (I), and system is designed to monitor function of batteries for operation of vehicle without any parallel connections of batteries.    USE - The battery pack is useful in electric vehicles or plug-in hybrid electric vehicles.    ADVANTAGE - The battery pack: exhibits improved energy capacity; is of low cost and has a simpler design; has reduced weight, size and greater reliability; provides high degree of safety; and provides long term cycling performance of the material and decrease the first cycle irreversible capacity loss.    DETAILED DESCRIPTION - Battery (140) pack (B1) comprises a control system and not greater than 130 or 110 lithium ion pouch batteries connected in series generating an average voltage of at least 400V or 315V with a 50% or 60% depth of discharge and having an energy capacity at full discharge of at least 15 kilowatt-hours based on full depth of discharge, where each lithium ion battery has a thickness of 7-18 mm and a planar area of 25000-5,000 mm2, and the positive electrode comprises an active composition of formula (Li1+bNiaMnxyCopAyO2zFz) (I), and the control system is designed to monitor function of the series connected batteries for the operation of a vehicle without any parallel connections of the batteries.    b = 0.01-0.3;    a = 0-0.4;    x = 0.2-0.65;    p = 0-0.46;    y = 0-0.15;    z = 0-0.2; and    A = Metal dopant distinct from Ni, Mn and/or Co.    Provided that a and p are not both zero. INDEPENDENT CLAIMS are also included for:    (1) a battery pack (B2) comprising not greater than 260 lithium ion pouch batteries arranged with pairs of batteries connected in parallel to form two strings of batteries connected in series generating an average voltage of at least 400V with a 50% depth of discharge and having an energy capacity at full discharge of at least 40 kilowatt-hours based on full depth of discharge;    (2) a lithium ion pouch battery (B3), comprising: 31-37 positive electrode plates; a corresponding number of negative electrode (142) plates stacked to alternate with the cathode plates; a separator (146) between adjacent cathode plates; and anode plates, where the battery has an energy density of at least 300 Wh/l and a total capacity of at least 45 Ah based on full depth of discharge; and    (3) a lithium ion pouch battery (B4), comprising: 20-50 positive electrode plates; a corresponding number of negative electrode plates stacked to alternate with the cathode plates; a separator between adjacent cathode plates; and anode plates, where the cell has a weight of 0.725-1.4 kg and a specific energy of at least 160 Wh/kg and a total capacity of at least 40 Ah based on full depth of discharge.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the battery stack with a single positive electrode and negative electrode separated from a case.    Battery (140)    Negative electrode (142)    Positive electrode (144)    Separator (146)    Current collector (148)