Abstract: The battery comprises rechargeable battery cell(s), a current regulator varying a charge current provided to the battery cell(s) and a bypass circuit allowing a discharge current provided by the battery cell(s) to bypass the current regulator. The current regulator can limit the charge current depending on the amperage of the charge current and of the temperature of the current regulator. Two connecting terminals provide the charge current to the battery cell(s) and output the discharge current provided by battery cell(s). This battery can be used in existing applications to replace other type of batteries for which the current-generating equipment of the application for charging the battery was originally designed without requiring modification thereof.

Abstract: In a mixture of metal powders from which ferrous alloy articles may be made by the process of powder metallurgy, the mixture consisting of the following in percentages by weight; nickel, 0.5 to 4%, manganese, 0.5 to 6%, carbon (graphite), 0.05 to 1.5%, copper, if present, up to 5%, boron, if present, up to 0.4%, iron and usual impurities, balance to 100%, the improvement consisting in that the nickel and manganese are in the form of a powdered binary alloy having a nickel to manganese ratio by weight in the range 15 : 85 to 65 : 35 and all of said powdered alloy passes through a 400 mesh B.S.S. sieve.