Abstract: A storage battery whose container accommodates series-connected cells whose jars are filled with electrolyte and contain plate groups assembled from plates with the aid of elements which fasten the terminal posts to the plates while the internal surfaces of two opposite walls of the jar facing the surfaces of the end plates of the plate group are provided with vertical ribs ensuring circulation of electrolyte in the electrolyte layer around the plate group, each cell having a dielectric plate which rests freely on the elements fastening the terminal posts to the plates.

Abstract: A storage battery adapted to be mounted in a compartment, preferably of an aircraft, wherein on one of the walls of a metal container with a plastic lid having a projection there is provided a plug member connectable to a mating plug means. The contact sockets of this plug member are hollow cylinders divided by longitudinal slots into sectors on the side of insertion of the mating plug member. The contact sockets are of a "floating" structure displaceable in any direction relative to the central axis thereof. The metal container has insulating strips secured to its bottom and to the lower portions of the longitudinal side walls and serving, together with the plastic lid, as electric insulation of the container from the compartment and as guides when this storage battery is being mounted in the compartment and automatically coupled to the electrical wiring system of the aircraft by engagement of the plug member with the mating plug member.