a lead acid battery gives off the gas carbon monoxide.
a lead acid battery gives off the gas carbon monoxide.
what gas does a lead acid battery give off?
carbon monoxide
in the absorbed glass mat design, or agm for short, the separators between the plates are replaced by a glass fibre mat soaked in electrolyte. there is only enough electrolyte in the mat to keep it wet, and if the battery is punctured the electrolyte will not flow out of the mats. principally the purpose of replacing liquid electrolyte in a flooded battery with a semi-saturated fiberglass mat is to substantially increase the gas transport through the separator; hydrogen or oxygen gas produced during overcharge or charge (if the charge current is excessive) is able to freely pass through the glass mat and reduce or oxidize the opposing plate respectively. in a flooded cell the bubbles of gas float to the top of the battery and are lost to the atmosphere. this mechanism for the gas produced to recombine and the additional benefit of a semi-saturated cell providing no substantial leakage of electrolyte upon physical puncture of the battery case allows the battery to be completely sealed, which makes them useful in portable devices and similar roles. additionally the battery can be installed in any orientation, though if it is installed upside down then acid may be blown out through the over pressure vent.
lead–acid battery
similar to the gen 1 ev1's, there were lead acid battery and nickel–metal hydride battery options. the 1997 chevrolet s-10 ev used a lead acid battery pack. manufactured by delco electronics, the pack consisted of 27 batteries, with one being designated as an "auxiliary" cell. these reportedly offered 16.2 kilowatt-hours for propulsion. in 1998, an ovonic nickel–metal hydride battery (nimh) pack was also available; these batteries were lighter () and had a combined 29 kilowatt-hours of storage for a longer range. nimh also has longer life but costs more than the lead acid option. the battery pack was located between the frame rails, beneath the pickup bed. on all battery types, a passive battery monitoring and management system was used; this meant that excess energy was wasted from cells with a higher charge, while the remainder of the cells reach the same state of charge.
chevrolet s-10 ev