On a battery back with 4 - 12v HUP 1690 Ah wired for 48VDC, I went out the other day and "charged" up the bank and give it a fair amount more at an equalizing voltage.
I checked the specific gravity pretty much right away with the batteries still warm and bubbling. All cells read about 1.260, except a single cell that appears to have an graivity of 1.000. Is this normal for a single cell in a bank to crap out completely while all the others remain in fairly good condition? The bank is 6 years old and has been equiped with a Watermaster system from day one. I can't believe that I have somehow washed out 3 gallons of electrolyte by overfilling or something. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com
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