Just how good are those new, (was used) sealed batteries? [RE-wrenches]

[John Raynes]

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While we're on the topic of sealed batteries, anyone have strong 
preferences regarding Concorde vs. MK (or perhaps others) for an off-grid 
install?  We've never sold the sealed for an off-grid system, but we're 
starting to quote sealed battery banks by request.  I always quote the 
Absolyte IIP's but given that they run 3-4X the cost of a set of Trojans, 
we also let prospective customers know that there are less expensive 
options.  I'm just not sure how strongly (or not) we should recommend the 
lower cost sealed models.


Thanks,
John Raynes
RE Solar
Torrey, UT


At 05:06 PM 10/21/2006 +0100, you wrote:

>We have used quite a few secondhand sealed batteries here.  They varied a 
>lot in durablility.  Some very fresh ones failed quite soon, whereas 
>another set that stood around for a year or two has actually given good 
>active service for several more years.  We had to weed out the failing 
>units but this was easier because they were used in 2 120 volt 
>strings.  We only need to check the voltages and pull the weak ones when 
>the battery is not doing so well.  Replacements are expensive but they 
>have proved worth doing.
>--
>Hugh
>
>Scoraig Wind Electric
>http://www.scoraigwind.co.uk/
>
>
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