CPC H01M 50/383 (2021.01) [H01M 10/12 (2013.01); H01M 2220/20 (2013.01); Y02E 60/10 (2013.01)] | 13 Claims |
1. A lead acid battery that exhibits outgassing of H2 and O2 gases, the lead acid battery comprising a vapor pressure barrier in a head space of the lead acid battery, the vapor pressure barrier comprising:
a porous membrane with an oil layer on its surface, or a non-woven layer with an oil layer on its surface.
|