Definition(s)
Vented Cell
secondary cell having a cover provided with an opening through which products of electrolysis and evaporation are allowed to escape freely from the cell to the atmosphere
[SOURCE: IEC 60050-482:2004, 482.05.14]
Source: IEC 61892-6, Mobile and fixed offshore units – Electrical installations – Part 6: Installation, Third Edition, December 2013. Global Standards