Wrenches, The S6-460AGM still gasses about 6 liters of hydrogen per battery per hour while being charged at 2.35vpc or higher, in warmer temperatures, this gassing accelerates. at 40 C this gassing rates double. In AGM batteries there is a pressure vent that allows the battery to gas in these conditions.
If you don't have ventilation or this hydrogen gas is ignited it can and will trace back to the battery with the highest concentration of gas, and once it finds compression it'll cook off like a firecracker. It's a good idea to at least have passive ventilation on AGM while FLA needs active ventilation, in warmer locations it's a good idea to have some active ventilation (Cooling helps too) instead of just passive ventilation. I still see a lot of FLA or AGM batteries being installed directly under the inverters, chargers or charge controllers... Hydrogen gasses are lighter than air, so the gas tends to rise vertically. If this gas gets into the power electronics it can cause corrosion within the power electronics and if you get a spark from a relay transition you could get an ignition of the hydrogen gasses causing the battery to blow its top. <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> <http://www.rollsbattery.com> Steve Higgins ⋅ Technical Services Manager t +1.902.597.4020 m +1.206.790.5840 f +1.902.597.8447 e [email protected] <http://www.facebook.com/RollsBattery> <https://www.youtube.com/user/RollsBattery> <https://www.youtube.com/RollsBatteryEngineering> <https://www.youtube.com/RollsBatteryEngineering> <https://www.youtube.com/RollsBatteryEngineering> <https://www.linkedin.com/company/rolls-battery-engineering> <https://www.linkedin.com/company/rolls-battery-engineering> <https://www.linkedin.com/company/rolls-battery-engineering> <http://www.instagram.com/RollsBattery> <http://www.instagram.com/RollsBattery> ------------------------------ CONFIDENTIALITY: The information transmitted herein is intended only for the addressee and may contain confidential, proprietary and/or privileged material. Any unauthorized review, distribution or other use of or the taking of any action in reliance upon this information is prohibited. If you receive this email in error, please contact the sender and delete or destroy this message and all copies. ------------------------------ On Wed, Jul 24, 2024 at 7:41 AM Drake Chamberlin via RE-wrenches < [email protected]> wrote: > A severely abused bank of Rolls Surrette batteries had one battery off gas > heavily on discharge. It seems like the off gassing happens on overcharge, > not discharge. What could have caused that? > > Thank you, > > Drake > > Drake Chamberlin > Athens Electric LLC > Ohio Electrical Contractor’s License 44810 > NABCEP Certified PV Installation Professional > > > -- > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
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