Re: [RE-wrenches] Bad Cell

[Allan Sindelar]

Yep, sure sounds like you have a bad cell. It may be covered under warranty. You can jumper around it, to temporarily take it out of the system while you secure a replacement. Reset the charge settings to 23/24 of what they'd be otherwise. Allan Sindelar Allan@positiveenergysolar.com NABCEP Certified Photovoltaic Installer EE98J Journeyman Electrician Positive Energy, Inc. 3201 Calle Marie Santa Fe, New Mexico 87507 505 424-1112 www.positiveenergysolar.com On 6/20/2010 11:24 AM, d...@foxfire-energy.com wrote: Sure sounds like you lost a cell... what's the resting voltage of that battery compared to the other three? (-1/6?) db Dan Brown Foxfire Energy Corp. Renewable Energy Systems (802)-483-2564 www.Foxfire-Energy.com NABCEP #092907-44 -------- Original Message -------- Subject: [RE-wrenches] Bad Cell From: "Mark Frye" <ma...@berkeleysolar.com> Date: Sun, June 20, 2010 1:12 pm To: <re-wrenches@lists.re-wrenches.org> 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  _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org

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