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Old 04-11-2019, 09:43 AM   #1
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Join Date: Jul 2016
Location: Western Massachusetts
Posts: 534
Do AGM Batteries Need Venting?

Pardon me if this has already been asked and answered. After combing through a number of search results, I am still at a loss for definitive info.

My research has turned-up the fact that VRLA (AGM) batteries do vent hydrogen gas to the environment in an overcharging situation. However, one of the battery manufacturers' information indicates the the amount of hydrogen released in this situation is so small that it can easily mix with the surrounding environment and be rendered harmless (i.e.; non-explosive). Cautions do abound if the VRLA is put into a sealed battery container, however.

So, I'm interested in hearing from those of you who (1) are using AGMs, (2) have researched this point about venting and (3) have installed them inside your RV's interior.

Theo & Carol

2007 GoldenDoodle ("Cooper")
2020 Rockwood Roo 23IKSS
2015 F-150 4WD XLT SCab, 5.0L, 3.73, 36gal, HD Towing Pkg (53A), 1,980lb Payload
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Old 04-11-2019, 12:48 PM   #2
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Join Date: Nov 2012
Location: Mount Laurel, New Jersey
Posts: 9,202
No for a quick answer. Have been using them since 2001. I have them for the house batterys and 5,vehicles.
2012 SunSeeker 3100SS Toad-1962 Futura Average 100 + days camping
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Old 04-11-2019, 03:43 PM   #3
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Join Date: Jul 2018
Location: Winona, MN
Posts: 820
this type of battery is used in commercial (and consumer) UPS systems and is the preferred type of battery for sportsmen and women. they are routinely installed in enclosed areas. I would have no problem having one installed inside. as long as it is not an air/gas tight enclosure you are fine.
2018 17RP
2009 Crew Cab King Ranch F150 "Goose"
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batteries, vent

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