Centrally-activated deferred-action silver-zinc battery

A centrally activated deferred-action battery comprising a stack of couples each constituted by a positive plate and a negative plate and separators each having a central hole forming a central well, means spacing said plates from each other to provide a gap between adjacent facing positive and negative plates for receiving electrolyte, means mechanically separating each couple from the adjacent couple, a metal sheet electrically connecting adjacent couples, said sheet also having a central hole, a first insulating washer with a hole in the center of the washer which is of smaller diameter than the hole in the center of the metal sheet, a second insulating washer cooperating with said first named washer to insulate the inner edge of the said metal sheet, one face of the first washer resting on a said second washer on the adjacent metal sheet and including at least one recess such that the recess together with the said last-named second washer of the adjacent metal sheet forms a channel for conveying electrolyte from the central well to the said gap upon activation of the battery and wherein the recess is so shaped that the channel follows a path which is oblique to the local radial direction of the central hole of said first named washer.