NOVELTY - Modularized metal-air battery comprises metal-plate module(s) having metal anode, and two air-plate modules, each having air cathode. The metal anode and air cathode, are each enclosed in a frame. Each frame is thicker than its enclosed metal anode or air cathode. The frames are securely attached together to define two chambers, and are selectively filled with liquid electrolyte.    USE - Useful in providing power.    ADVANTAGE - The inventive battery is easy to manufacture and expand to provide the desired output voltage and energy capacity. The battery comprises air discharge path or air discharge cutout to allow oxygen and fumes to be discharged from the chamber. The fume is guided through condensation device to extract the water content from the fume, to prevent most of the fume be released out of the battery, and to allow the electrolyte density inside the battery system to be maintained in longer range.    DETAILED DESCRIPTION - A modularized metal-air battery comprises metal-plate module(s), and two air-plate module. The metal-plate module has metal anode enclosed in a frame. Each air-plate module has air cathode enclosed in a frame. Each frame is thicker than its enclosed metal anode or air cathode. The first air-plate module, metal plate module(s), and second air-plate module are combined to constitute the battery, in a manner that the frames are securely attached together to define two chambers, and are selectively filled with liquid electrolyte. An INDEPENDENT CLAIM is also included for a method for manufacturing a modularized metal-air battery comprising producing an air-plate module, then metal-plate module. The air-plate is produced by providing a piece of film (1331) from a roll of film (1332), and punching an aperture into the piece of film. A piece of metal screen (1341) is provided from a roll of metal screen (134), and attached to the piece of film, such that the aperture is covered by a piece of metal screen. Air cathode material (135) is coated on the piece of metal screen, which is attached to the film. A piece of separator is provided from the a roll of separator (136) and attached to the metal screen. A piece of film is separated from the roll of film, and attached with a frame. A metal-plate module is produced by providing a piece of meal screen from the roll of metal screen and plastering a metal power on the piece of metal screen. The metal powder is pressed on the piece of metal screen to form a metal plate. A piece of metal screen is separated from the roll of metal screen, then attached with a frame (137).    DESCRIPTION OF DRAWING(S) - The drawing shows a process of producing an air-plate module of the battery.    roll of metal screen (134)    air cathode material (135)    roll of separator (136)    frame (137)    piece of film (1331)    roll of film (1332)    piece of metal screen (1341)