Valve Regulated Lead Acid Battery
secondary battery in which cells are closed but have a valve which allows the escape of gas if the internal pressure exceeds a predetermined value
Note 1 to entry: The cell or battery cannot normally receive addition to the electrolyte.
Note 2 to entry: This note applies to the French language only.
[SOURCE IEC 60050-482:2004, 482.05.15].
Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December 2013. Global Standards