Mark,
Do the interconnects total the same length in each string? There could
be a bad connection somewhere in that string. But more than likely
this behavior is the result of a cell (or cells) that has a high
impedance because it is sulfated. How do the specific gravity numbers
look.
Kent Osterberg
Blue Mountain Solar
Mark Frye wrote:
Imbalance In Multiple String Charging Current
Folks,
I have three strings of batteries
cabled in parallel to a common buss bar.
During charging, one string takes
significantly less current than the others.
What can I infer from this? Is the low
current string healthier, presenting higher impedance due to a higher
state of charge? Or is there a single bad cell with high impedance in
this string? Both, neither, something else, or can't know without
further information?
Mark Frye
Berkeley Solar Electric Systems
303 Redbud Way
Nevada City, CA 95959
(530) 401-8024
www.berkeleysolar.com
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