Through the use of such a three-layered separator, adequate
amounts of electrolyte will be supplied to the cathodic and anodic
electrolyte spaces as necessary for the respective reactions to proceed.
This will guarantee the reversibility of the processes at the
two electrodes and thus keep the battery capacity constant on
cycling. The capacity of the battery will not decline with cycling,
as is the case with existing valve-regulated lead-acid batteries. The
battery will become a stable source of power and energy until some
irreversible process, such as grid corrosion, passivation of the lead
dioxide active mass, disintegration of the expander in the negative
plates, etc., leads to its failure