NOVELTY - A hydrogen pipe (3) connects containers (1,2) each containing a hydrogen absorbing alloy (7) that contacts hydrogen. The hydrogen pipe has a hydrogen compressor (4). A water pipe (5) that has a water pump (6) heat exchangeably connects the containers to each other.    USE - For activating hydrogen absorbing alloy such as solid metal hydride (MH) for use as fuel to be supplied to a polymer electrolyte fuel cell (PEFC) for vehicular applications, etc.    ADVANTAGE - The provision of the hydrogen pipe enables use of hydrogen released from one container by the other, hence facilitates repeated use of hydrogen and decreases amount of hydrogen required for activation. The heat exchangeable connection of the containers decreases thermal energy required for activating the hydrogen absorbing alloy. The provision of activated hydrogen absorbing alloy in one container increases speed, amount of hydrogen and heat per cycle flowing from one container to the other and shortens time for activating the alloy.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method of activating hydrogen absorbing alloy that involves providing activated hydrogen absorbing alloy in one container, and hydrogen absorbing alloy for activation in another container. The alloys are isolated from water that acts as the heating medium. Hydrogen in one container that is in a hydrogen release condition is compressed and supplied to the other container that is in hydrogen absorption condition, through the hydrogen pipe. The heat released from the hydrogen absorption container is supplied to the other container. The hydrogen flow direction and hydrogen supply direction are reversed to supply hydrogen from container (2) to container (1) and to supply the heat released from container (1) to container (2). The steps involving hydrogen release, absorption and heat release are repeated twice.    DESCRIPTION OF DRAWING(S) - The figure shows a systematic diagram of the hydrogen absorbing alloy activation apparatus.    Containers (1,2)    Hydrogen pipe (3)    Hydrogen compressor (4)    Water pipe (5)    Water pump (6)    Hydrogen absorbing alloy (7)