Good Sam Club Open Roads Forum: Tech Issues: Problem with AGM Batteries
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time2roll

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Posted: 04/25/21 01:13pm Link  |  Quote  |  Print  |  Notify Moderator

La Gasser wrote:

Converter is the factory Progressive Dynamics Model PD4590K 90amp unit. Connections have been maintained clean. When on shore power, meter shows in the 14.4 to 14.6 range initially, then reduces to the 13.2 to 13.4 range when charging so that appears ok. I also had Lifeline AGM batteries that were over 8 years old when I sold the previous trailer, so am disappointed with the life of these Interstate batteries, but it could be Jayco issue more than a battery issue. Will probably replace both with Duracell AGM's from Sam's Club. I've had good luck with their batteries in vehicles and my boat.
Looks good. Batteries are just shot.


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MEXICOWANDERER

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Posted: 04/25/21 03:26pm Link  |  Quote  |  Print  |  Notify Moderator

Lumping garbage Chinese AGM BATTERIES with a good quality AGM is the same thing as lumping garbage grade wet batteries with Rolls & Surrette batteries. "These Ginzu knives are awful. Buck knives must be garbage too because they are knives after all. RIGHT?
As far as I know Lifeline Full River and Odyssey make decent AGM Batteries. Only a handful of flooded battery manufacturers make products worthy of note.
It's the same with clothing. I did not pay the price for a young goose down comforter. So it's heavy and seems to have the warmth of an ostrich or chicken feather comforter. I am not disparaging "down" for my I'll choice.

La Gasser

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Posted: 04/26/21 07:06pm Link  |  Quote  |  Print  |  Notify Moderator

Update - replaced the Interstate AGM's with Duracell AGM's from Sam's yesterday. All seems ok at this point. It appears that one of the old batteries was bad. I'll confirm that tomorrow when I return them to Sam's for the Core Charge credit. I did notice that the old Interstate batteries were made in China, like most things we buy these days. The trailer is almost always plugged into shore power either at home or at the campground. So the original batteries were probably never under 80% much less run dead. I've verified that the converter can charge AGM's and it is working as per the manual. The dealer did install the AGM's at my request at the time of purchase.

wa8yxm

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Posted: 04/27/21 04:41am Link  |  Quote  |  Print  |  Notify Moderator

One thing.... Most Lead acid batteries want to charge at no more than 30% of C/20 (For a group 27 that means about 29 amps)

Lifeline AGM's are more or less unique in that want to eat faster than that.

The AGMs I had (in my prior post) were made in the USA


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JimK-NY

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Posted: 04/27/21 09:25am Link  |  Quote  |  Print  |  Notify Moderator

I have never had flooded batteries last as long as the Lifelines. After 7 years I replaced mine only because I felt I had my money's worth and did not want an issue with traveling. I probably should have done a reconditioning cycle and used them for years longer.

Grit dog

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Posted: 04/27/21 09:36am Link  |  Quote  |  Print  |  Notify Moderator

La Gasser wrote:

Converter is the factory Progressive Dynamics Model PD4590K 90amp unit. Connections have been maintained clean. When on shore power, meter shows in the 14.4 to 14.6 range initially, then reduces to the 13.2 to 13.4 range when charging so that appears ok. I also had Lifeline AGM batteries that were over 8 years old when I sold the previous trailer, so am disappointed with the life of these Interstate batteries, but it could be Jayco issue more than a battery issue. Will probably replace both with Duracell AGM's from Sam's Club. I've had good luck with their batteries in vehicles and my boat.


Does your PD converter have the Charge Wizard?
I didn’t look up the model and maybe all the newer ones do, but if not, it’ll just cook the batteries. The charge Wizard turns the converter into a smart charger.


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La Gasser

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Posted: 04/27/21 08:04pm Link  |  Quote  |  Print  |  Notify Moderator

Yes it has the Charge Wizard. After I installed the new batteries, the charge rate was in the Normal Mode of 13.6, but now it's in the Storage Mode of 13.2. Boost Mode would be in the 14.6 range. I had the 2 old Interstate batteries load tested today at Sam's when I returned them for the Core Charge credit and both failed the test. They had a surface charge only. Hopefully these will last longer than 4 1/2 years. Time will tell. Thanks for all the info provided.

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