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I've seen behavior like that from Series 5000 Rolls that were only a
year old, but chronically under charged. (20 amp load and the
inverter would reach low shut off in minutes, 30 amp charge and it
hit high voltage and quit charging) Any other battery, and I would
assume its capacity was gone. <br>
It seems to be something about their slightly different alloy in the
plates, but I don't know for sure. <br>
Enough time held at high enough voltage, and they seem to recover,
but its definitely concerning to have a 1000 AH battery behave like
a 10 AH battery. I found that if the voltage is held at the high
side, that the charging amps would actually increase over time,
which is opposite of other batteries. It must have a coating of
sulfation on the plates that initially keeps the battery from
working right, then with enough time it knocks that layer off to
expose the actual plates and begin actual charging. (just a guess)<br>
I'll actually set the charge amps down, and the voltage up at first,
then when I see it start taking more amps, I set it back to normal
charge parameters.<br>
<br>
Ray<br>
<br>
On 10/22/2011 9:01 AM, David Katz wrote:
<blockquote
cite="mid:8767436DED006946A7206390E83D862204E49C55D9@VS-SJEXCH01.recsolar.local"
type="cite">
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style="font-family:"Verdana","sans-serif"">When
they said they reached 29 volts in 5 minutes every morning
with a charge of less than 30 amps (an assumption, since they
are running a 2500 watt generator), that sounds like a battery
with very little capacity. </span><br>
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<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif"">David
Katz<o:p></o:p></span></p>
<span
style="font-family:"Verdana","sans-serif""><o:p></o:p></span><span
style="font-family:"Verdana","sans-serif""><o:p></o:p></span>
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