NOVELTY - The system (30) has multiple channels (48) that are provided within a rectangular-shaped cover plate. A pair of inlet manifolds (78) provided entirely within the cover plate, is configured to convey a coolant into the channels. A pair of outlet manifold (112) provided entirely within the cover plate, is configured to convey the used coolant out of the channels. The inlet and outlet manifolds are extended along the length of the cover plate, and the flow of coolant within the channels is perpendicular to the flow of coolant within the inlet and outlet manifolds.    USE - Cooling system for battery modules of manifold flow distribution system (claimed) mounted in vehicles such as hybrid electric vehicle (HEV), plug-in electric vehicle (PEV), battery electric vehicle (BEVs) and plug-in hybrid vehicle (PHEVs). Can also be used in power storage for portable battery module, back-up power supply and alternative energy source, and in air conditioning unit, radio or other electronics.    ADVANTAGE - The cooling system provides effective cooling to the battery modules to prevent premature aging of individual battery cells within the battery module, and the cost of the battery module is minimized. The system can utilize cabin air as an effective coolant. An effective cooling system is provided to draw excess heat away from the module, by creating an isothermal temperature distribution along the cells in a module or battery pack to preserve the cells. The air cycled throughout the cabin and the cooling system reduces the number of fluids circling through the vehicle, hence the system effectively uses air to create the isothermal temperature distribution along the cells. The used air is circulated through the vehicle, for heating or defrosting. The used air is re-cooled and cycled through the cooling system repetitively.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a manifold flow distribution system; and    (2) a method of cooling a battery system.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic of the manifold flow distribution system.    Cooling system (30)    Channels (48)    Battery module (60)    Inlet manifolds (78)    Outlet manifolds (112)