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 > agm battery life

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midnightsadie

ohio

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Posted: 01/24/20 04:34am Link  |  Quote  |  Print  |  Notify Moderator

question buddy has two durcell 31 agm batteries he wants to sell ,used them for three years in a cabin for lights etc. he now has electric. is there much life left in these? I been thinking about a using them in my little boat with a 12v trolling motor. he took them back an forth to recharge them . any opinions appr.

rgatijnet1

Florida

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Posted: 01/24/20 04:37am Link  |  Quote  |  Print  |  Notify Moderator

Mine are still going strong after 6 years. Have no idea how much longer they will last.

RobWNY

Jamestown, NY

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Posted: 01/24/20 05:25am Link  |  Quote  |  Print  |  Notify Moderator

Too many variables to even guess how much life is left in them. If they're still good and he's giving them to you, you aren't out anything if they don't last other than your time and effort. If he wants $$ for them, I wouldn't bother.


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naturist

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Posted: 01/24/20 06:29am Link  |  Quote  |  Print  |  Notify Moderator

Agree with RobWNY. It isn’t a question of age, it’s a question of charge/discharge cycles and depth of discharge. If taken to near complete exhaustion, they might be completely killed in only a couple hundred cycles. At best, they are good for maybe 1500 cycles, but that also depends on their design.





pianotuna

Regina, SK, Canada

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Posted: 01/24/20 08:28am Link  |  Quote  |  Print  |  Notify Moderator

If they had been maintained by a solar charging system, I'd be interested. But back and forth? Nope, not for me.


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My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

midnightsadie

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Posted: 01/24/20 09:30am Link  |  Quote  |  Print  |  Notify Moderator

thanks, I,ll pass he wants $90ea for them .I,ll put the extra in and get new.

pianotuna

Regina, SK, Canada

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Posted: 01/24/20 10:07am Link  |  Quote  |  Print  |  Notify Moderator

Midnightsadie,

If you wish to save money consider getting reconditioned telecom jars from an Interstate battery store. They come with a 90 day warranty.

Do measure them to see if they will fit.

* This post was edited 01/24/20 04:26pm by pianotuna *

dodge guy

Bartlett IL

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Posted: 01/24/20 10:21am Link  |  Quote  |  Print  |  Notify Moderator

AGM’s can last along time if charged correctly. I had one in my Excursion. It was 9 years old when I sold it. Still in good shape. If your using them for a trolling motor I would consider them.

As long as you have the required paddle on board I would use them.


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Star Gazer

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Posted: 01/25/20 09:58am Link  |  Quote  |  Print  |  Notify Moderator

I have had one in my small Casita for the last 5 years. Excellent battery. Bought Vmax from Amazon with free shipping included.

* This post was edited 01/25/20 10:24am by Star Gazer *


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