Reproduction AGM Battery Question

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1969383S

1969383S

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So my repop AGM yellow top Mopar battery is now almost 6 years old. It has worked well and have had to charge it a few times after long, mainly winter time storage. Always with the charger adjusted for AGM.

I have noticed a little discolor on the top in the last few years after charging. It wipes clean and the terminals are spotless., but! Being AGM can you add a tad “ounce or so” of distilled water in each cell to help it last a few more years? The caps do twist off.
 
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While the car is still in the trailer the battery is in the garage and keep it tended once a week on 2amp load.
 
If I remove a cap I see no liquid and know this is correct for AGM as it is absorbed in the fiberglass Mat. Question is with the small residue I see after charging will adding a tiny bit hurt it?
 
1969383S said:
If I remove a cap I see no liquid and know this is correct for AGM as it is absorbed in the fiberglass Mat. Question is with the small residue I see after charging will adding a tiny bit hurt it?
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I believe it will dilute and lower the specific gravity. I tried this several times when working for Harley as they all use AGM batteries but it never worked to sustain the battery life, and the battery was on a tender when the bike sat. It seems the AGM's last for about 7 years if your lucky but then leave you stranded. Others may have different results.
 
AGM has sealed cells and no place to add water. It may last a few more years or maybe crap out tomorrow. Your call.
 
toolmanmike said:
AGM has sealed cells and no place to add water. It may last a few more years or maybe crap out tomorrow. Your call.
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They actually have a sealed strip under one of the warning labels that remind you not to open it, at least mine do.
 
toolmanmike said:
AGM has sealed cells and no place to add water. It may last a few more years or maybe crap out tomorrow. Your call.
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Disagree a bit. The caps screw off, there is no fluid to the the naked eye. I do understand AGM but thought If a very small amount is added it may prolong death! These repo batteries are not cheap!
 
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Was trying to be specific but guess I failed. This is the battery.

7E6888C1-E148-48A7-A314-8B69C35AEDF4.jpeg
 
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I Have and mat plates. No liquid visible. It is absorbed. My question is as such, with the residue from charging it seems some has escaped to evaporation. Will adding a small amount help life!
 
1969383S said:
I Have and mat plates. No liquid visible. It is absorbed. My question is as such, with the residue from charging it seems some has escaped to evaporation. Will adding a small amount help life!
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I don't think it will do you any good.

Capture.PNG
 
Clean it, use it until it fails and get a new one.
 
toolmanmike said:
Clean it, use it until it fails and get a new one.
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Here Ya! The wife hates me for batteries! We have at least 9 between the vehicles and the Coach ones are big and expensive, It is 6 years old and not cheap.i will see how long it may last!

least our 2 company cars are not on our expense list!
 
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Thoughts...

#1 Contact the manufacturer and ask them for advice.
#2 when the batt does finally fail. CAREFULLY cut it open from the bottom remove the guts and turn it into a battery cover.
 
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