NOVELTY - The apparatus has a plate (212,216) with a liquid input channel (224,228) and a separate liquid output channel (222,226) that distributes a liquid through fuel cell or redox battery. The liquid input channel has an input aperture (232,238) and output channel has an output apertures (234,236) in a wall of respective channels provides liquid communication in a direction transverse to a liquid flow direction defined by channel. The apertures are sized to allow liquid communication between channel and a porous element and to inhibit ingress of element into channel.    USE - Fuel cell apparatus for distributing liquid in fuel cell or in redox battery used in motor vehicle or electronic, automotive or combined heat and power equipment (all claimed).    ADVANTAGE - Since the portion of the channel has a width greater than the width of the aperture, thus reducing resistance to liquid flow in the channel and increasing liquid flow rate in the channel. The aperture allows for a more compact, or slimmer, design and allows easier manufacturing of a bipolar plate incorporating the channel. The width of the channel is greater than the width of the aperture provides for a channel of reduced height-to width ratio, thus making easier to form portion of the channel. The occlusion of the channel is inhibited, thus avoiding increased flow resistance due to occlusion of the channel by the porous element. The lower tooling cost maintains the ability to incorporate small accurately formed holes with minimal pressure drop, thus reducing the risk of erosion by liquid flow.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a fuel cell;    (2) a redox battery;    (3) a plate assembly;    (4) a method for distributing a liquid in a fuel cell; and    (5) a method for manufacturing apparatus.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a fuel cell apparatus.    Plates (212,216)    Liquid output channel (222,226)    Liquid input channel (224,228)    Input apertures (232,238)    Output apertures (234,236)