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Old Dec 25, 2016 | 10:13 AM
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onehundred80
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Joined: Apr 2006
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From: Ontario
Default Re: OEM Battery Record?

Originally Posted by Speedy4x4
Are you talking about the pop off / one way that is built into a agm battery that are set to a certain psi that is a safety incase of overcharging so they do not blow up if over charged.
Completely different than a vent.
The Valve Regulated Lead Acid battery (VRLA) is not what I have. Mine is vented in the same fashion as the old wet cell battery.
These AGM batteries give off gases just like the old wet cells do, they give off less gas, most being reabsorbed as you say but when the charging system runs wild they get over charged, give of more gases and can spark inside causing an explosion. That is why the gases should be led from the battery to the outside air. Batteries that are in the trunk definitely require exterior venting because of this reason.
If your battery has the hole in each end at the top as the old ones did then you should add the vent hose or trap and the plug in the hole against the fire wall. My AGM battery came with one plug in the firewall end, I added the vent trap of course.


I use the old Varta trap that was OEM.
 
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