Any particular brands of AGM batteries to avoid? - Page 3 - SailNet Community
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post #21 of 31 Old 05-19-2019
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Re: Any particular brands of AGM batteries to avoid?

Well Odyssey will be better, but even the best can be murdered early by faulty supporting infrastructure, or abusive usage patterns.

If these are inevitable, better IMO to just buy the cheapest option and replace on a schedule
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post #22 of 31 Old 05-19-2019
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Re: Any particular brands of AGM batteries to avoid?

This is getting silly.
To clarify:
Enersys Optima = Abused - lasted 12 years.
Johnson Controls Optima - Not Abused - lasted 2 years.
QED - In my experience, the JC Optima was vastly inferior to the previous Enersys Optima.
Getting back to the original question.......

"The great thing about the internet is that you can quote anyone and no one will bother to check the source" - Aristotle
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post #23 of 31 Old 05-19-2019
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Re: Any particular brands of AGM batteries to avoid?

Your case is not at all unusual. Gylling sold the Optima brand to JCI after building a great reputation. In my experience the only thing resembling the original construction of that battery these days is how it looks. It would be like Yugo slapping a Lexus badge on a Lexus copy made by Yugo. Not the same quality..

If you still want that same original Optima quality, the Odyssey TPPL AGM's are good batteries.

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post #24 of 31 Old 05-19-2019
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Re: Any particular brands of AGM batteries to avoid?

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Originally Posted by outbound View Post
Like my lifelines. Just load tested and all passed after 5 1/2 years of full time cruising.
Can you describe the load test? Using a small carbon pile tester won't tell you anything about those size batteries. A capacity test would be best, as load testing isn't necessarily correlated well with capacity, but there are load testers that can accurately determine health. Thing is they are expensive, and few service people have them.

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post #25 of 31 Old 05-19-2019
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Re: Any particular brands of AGM batteries to avoid?

Quote:
Originally Posted by Geoff54 View Post
Enersys Optima = Abused - lasted 12 years.

Johnson Controls Optima - Not Abused - lasted 2 years.

QED - In my experience, the JC Optima was vastly inferior to the previous Enersys Optima.
Yes all true, never disputed any of that.
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post #26 of 31 Old 05-20-2019
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Re: Any particular brands of AGM batteries to avoid?

Trojan, if not lifestyle or durex.... But trojan works best.
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post #27 of 31 Old 05-20-2019
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Re: Any particular brands of AGM batteries to avoid?

Trojan AGM are not nearly as good as their FLA. Same with Deka.

Neither are even rated for lots of deep cycles by the mfg, and IRL really not great value compared to those reco'd above.

I'd even put Full River above them, and they're #4 IMO.

Note this applies to NA market, in most of the world they may be the best value available locally. Shipping costs make a huge difference, usually best to buy locally.
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post #28 of 31 Old 05-20-2019
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Re: Any particular brands of AGM batteries to avoid?

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Originally Posted by outbound View Post
But now see WM is selling flooded batteries which won’t spill acid out of the housing if tipped over. Interesting concept and at that price point well maybe a good choice for many.
The only scenario I could imagine in which an FLA fitted in a boat would be tipped to a point of spilling would leave one with a whole lot more to worry about than a bit of spilled acid.

In my boat it would need to be a full roll-over or pitch-pole and even then spilled acid would be mostly contained in the battery boxes .
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post #29 of 31 Old 05-20-2019
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Re: Any particular brands of AGM batteries to avoid?

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Originally Posted by john61ct View Post
Trojan AGM are not nearly as good as their FLA. Same with Deka.

Neither are even rated for lots of deep cycles by the mfg, and IRL really not great value compared to those reco'd above.

I'd even put Full River above them, and they're #4 IMO.

Note this applies to NA market, in most of the world they may be the best value available locally. Shipping costs make a huge difference, usually best to buy locally.
Read his post again...

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post #30 of 31 Old 05-20-2019
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Re: Any particular brands of AGM batteries to avoid?

Yes I got the condom bit was a joke.

But figured s/he was still sincerely recommending Trojan AGM.
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