Are valve regulated and recombination batteries the same kind of battery?
No, in the valve regulated cell, the battery will still form gases, the release of which is regulated by a one way valve. This greatly reduces the requirement for the addition of water to the cells (as opposed to an open cell design). In its simplest explanation, a recombination cell or battery recombines the gases produced during charging and converts them back into the battery components and forms water. However, there is a non return (control or safety) valve which allows for the escape of gas if the internal pressure exceeds a predetermined value.
