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kinetik marine, automotive


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oldspark 
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Joined: November 03, 2008
Location: Australia
Posted: March 30, 2010 at 7:25 AM / IP Logged  
Good point.
I read of someone seeing 3-4 year old AGMs in auto stores - not that that is bad if they have been maintained.
But do auto stores top up AGM batteries every 1-2 years as required?
From my measurements of wet batteries in chain stores, I suspect they do not maintain theirs (though wets require top up every 3-6 months.)
But if they are maintaining, then they are selling sub-standard batteries.
[I get my batteries from an old'sCool shop that constantly churn hence only have fresh batteries, and are also well on top of failure rates (goodbye Apollo - allbethat form 10 years ago.)]
If it's lower than its storage voltage, then do NOT buy it - it is already damaged.
oldspark 
Gold - Posts: 4,913
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Joined: November 03, 2008
Location: Australia
Posted: April 20, 2010 at 10:23 PM / IP Logged  
Trivial update to confirm closure of previous "data pending"...
No data was supplied including that for parallel batteries - and I still maintain avoid paralleling except when required, or when charging). (Paralleling two matched batteries (at least) doubles their unreliability where the unreliability (figures) relate to the single battery's self-failure.)
And despite my initial doubts, it seems Kinetik are good. (And I have nothing to support that they are not better than others.)
FYI - I recently put my 10 year old 38AH Yuasa AGM into service. Last night after several minutes of repeated cranking of a >140A reduction starter to un-bog my vehicle (ignition off) etc, it got me home without an alternator with ~1 hour of driving with 2x55W low beams etc. Based on voltage of 12.3V, it seemed to be under 40% discharged. Yep - I like AGMs. In their place.
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