AGM Battery Needs Desulfated?

[RocketFoot]

I am trying to charge my Exide AGM battery with a Cen-Tech Charger and it wants to desulfate the battery. I thought desulfating was only for traditional lead acid batteries? Should I just get a new battery or will this eventually work to recondition it?

 

[Cleveland Crush]

Don't know if my recent experience is directly relatable but:
My "Deluxe" model Optima charger all of a sudden started using it's conditioning (desulfation) mode and shortly after the Red Top Optima battery (10 yrs. old) started to out gas and become unreliable. Replaced with a new Red Top and all is well now. Yes, AGM batteries do benefit from the desulfation mode assuming they are in good condition.

 

[RocketFoot]

Don't know if my recent experience is directly relatable but:
My "Deluxe" model Optima charger all of a sudden started using it's conditioning (desulfation) mode and shortly after the Red Top Optima battery (10 yrs. old) started to out gas and become unreliable. Replaced with a new Red Top and all is well now. Yes, AGM batteries do benefit from the desulfation mode assuming they are in good condition.

it is taking forever, is that normal?

 

[Cleveland Crush]

My Optima charger generally will stay on conditioning mode about 2-4 hours then flip to charge or maintain mode thereafter.

 

[roboconklin]

I am trying to charge my Exide AGM battery with a Cen-Tech Charger and it wants to desulfate the battery. I thought desulfating was only for traditional lead acid batteries? Should I just get a new battery or will this eventually work to recondition it?

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You need a maintainer type for agm batteries for storage. Take it to your local Batteries store that sells AGM ,and they can desulfate this batter..usually n/c in hope you’ll buy one from them next time . That charger will only charge 75% of what AGM’s need.

 

[mrgmhale]

A quick Google inquiry yielded a few sites with what I feel is good info:

https://lifelinebatteries.com/blog/4-effective-ways-to-maintain-your-agm-battery-and-keep-it-durable/

https://lifelinebatteries.com/blog/how-to-test-if-your-agm-battery-is-faulty-at-home/#:~:text=However%2C%20if%20it%20fails%20to,a%20sign%20of%20severe%20damage.

https://www.practical-sailor.com/systems-propulsion/fighting-sulfation-in-agms


https://cloreautomotive.com/agm-batteries-what-you-need-to-know/#:~:text=Also%2C%20the%20AGM%20battery%20is,a%20flooded%20lead%20acid%20battery

I am glad this question came up because I have a failing 27F conventional lead-acid battery in out 73 Mach 1, and I have been pondering getting an AGM battery for it. I figured I would get around to researching them a bit "some day," knowing it was likely that "some day" would not come before I would need to replace the current battery. This post budged me into doing som depper reading on AGM batteries, and I a left wtill wondering if I ought to do that way or not. Ultimately I think I will get an AGM battery just to see for myself, firsthand, how it behaves vs the lead acid batteries. So, many thanks, RocketFoot... Seriously, you get me off my dead tail feathers and got me into reading more about AGM.

 

[c9zx]

I don't think our 1970s alternator/regulator are suitable for charging an AGM battery and have the battery last as long as it should. Chuck
https://www.interstatebatteries.com/blog/how-to-charge-an-agm-battery