Abstract: A nickel-metal hydride accumulator for industrial applications has positive nickel hydroxide electrodes and, separated therefrom, negative metal hydride electrodes as well as an alkaline electrolyte surrounding the electrodes. An improved nickel-metal hydride accumulator that is in particular insensitive to influences of temperature has a thermal arrangement which increases the specific thermal capacity of the accumulator and is formed by an additional electrolyte volume, wherein the accumulator comprises a plastics material housing which receives the electrodes and the electrolyte and is provided with a pressure relief valve.

Abstract: The invention relates to a nickel-cadmium battery having pocket-type plate negatives. In order to vary the properties of nickel-cadmium batteries having pocket-type plate negatives such that the unfavourable long-term behaviour is avoided and better endurance data can be achieved, the invention proposes to use fibre pattern electrodes as positive electrodes.