[RE-wrenches] concord batteries

[jay peltz]

Hi Conrad,

1. Not usually a good idea to EQ sealed small batteries.  This will hasten their death.

2. Best bet at this point is charge them individually or at least parallel at 12v

3. If possible put them on a long long charge to see if they actually charge up.

4. what are the charge set points, I'll guess factory set points  of 57.6v?

5. if the above is correct ( too high) with the too low of generator start, the batteries are mostly scrap at this point,

jay
peltz power




On Nov 29, 2009, at 5:48 PM, Conrad Geyser wrote:

> In the vein of us on grid folks who’s heads spin when the off grid folks start talking about charge programming and gen set start up parameters…
>  
> I am servicing an orphaned 48 V off grid system that is only 1 1/2 years old, with 40 Concorde Sun Extender batteries, which are for the most part, shot (about half of them under 10V after a generator EQ charge).  I’m sure the batteries have been abused at least after the point that someone lowered the generator start voltage to 40V.  We’re still doing fact finding on the charge parameters for the PV and wind, but I’m wondering if there is anyone that has an opinion on the Concorde batteries.
>  
> And at least at this point, I’m glad I had to study for some off grid questions on the NABCEP test, not to mention the conversations on this list.    : >
>  
> Conrad
> Cotuit Solar
>  
>  
>  
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