<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Jamie and others.<div><br></div><div>Thanks for the conformation and the information.</div><div><br></div><div>Another system installed badly. Hard to give bad news to people.</div><div><br></div><div>Thanks,</div><div><br></div><div>jay</div><div><br></div><div>peltz power<br><div><div><div>On Sep 4, 2008, at 5:42 AM, James Surrette wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="margin-left: 4px; margin-top: 4px; line-height: normal; font-variant: normal; margin-right: 4px; margin-bottom: 1px; "><div style="margin-top: 0px; margin-bottom: 0px; "><font size="3" face="Lucida Grande">Morning Jay,</font></div><br><div style="margin-top: 0px; margin-bottom: 0px; "><font size="3" face="Lucida Grande">I don't have a lot of good news for you - but maybe others do? Years ago, I visited a commercial fishing client that had a 6 week old 32VDC bank of batteries that were "not performing". Once we reviewed, we noticed a tap 6 cells in.....for 12V radios. Boat had been out for a 6 week run, which meant 6 weeks of charging at ~2.3VPC and the 10 non tapped cells were toasted (red cases were actually black). Of course, client wanted warranty but that is another story.</font></div><br><div style="margin-top: 0px; margin-bottom: 0px; "><font size="3" face="Lucida Grande">Your only hope is to separate the "low" 12V bank and charge to 100% SOC. Then charge the "hi" 12V bank to 100% (probably already there or beyond). Finally, marry the banks again and "balance" with a 2.35 - 2.4VPC until cell voltage stabilizes. Current acceptance will be low but voltage will ultimately stabilize across the bank.</font></div><br><div style="margin-top: 0px; margin-bottom: 0px; "><font size="3" face="Lucida Grande">The problem is, the "low" bank has been undercharged for 2 years and the "hi" bank has been severely overcharged. As a result the capacity / corrosion differences between the two "sides" will be great - leading to charging difficulties going forward, which may result in the bank needing to be replaced. However, I would recommend attempting to bring the bank into line before replacing.</font></div><br><div style="margin-top: 0px; margin-bottom: 0px; "><font size="3" face="Lucida Grande">I hope this is of assistance,</font></div><br><div style="margin-top: 0px; margin-bottom: 0px; "><font size="3" face="Lucida Grande">Jamie</font></div><br><div style="margin-top: 0px; margin-bottom: 0px; "><br><br><br>James Surrette<br><br>Surrette Battery Co. Ltd<br>1 Station Rd.<br>Springhill, NS, CAN<br>B0M 1X0<br><br>Direct: 902.597.4027<br>Fax: 902.597.8447<br><br><br><br>>>> jay peltz <<a href="mailto:jay@asis.com">jay@asis.com</a>> 09/04/08 1:25 AM >>><br>HI All,<br><br>A guy has 1/2 loaded his big surrette 24v battery, yep put 12v loads <br>onto only one side of the 24v battery.<br><br>Now after 2 yrs 12v side is low voltage, 24v side is boiling like crazy.<br><br><br>System is charged via SW4024, big genny and good size array.<br><br>so my question is can/should I<br><br>1. remove the 12v by installing a Vanner or similar.<br><br>2. put a 12v charger onto the lower 12v side to put an equal charge <br>into the batteries.<br>( I have never had success trying to charge up a highly unbalanced <br>battery)<br><br><br>thanks,<br><br>jay<br><br>peltz power<br>_______________________________________________<br>List sponsored by Home Power magazine<br><br>List Address:<span class="Apple-converted-space"> </span><a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br><br>Options & settings:<br><a href="http://lists.re">http://lists.re</a>-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<br><br>List-Archive:<span class="Apple-converted-space"> </span><a href="http://lists.re">http://lists.re</a>-wrenches.org/pipermail/re-wrenches-re-wrenches.org<br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a><br><br>Check out participant bios:<br><a href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a><br><br></div>_______________________________________________<br>List sponsored by Home Power magazine<br><br>List Address:<span class="Apple-converted-space"> </span><a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br><br>Options & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive:<span class="Apple-converted-space"> </span><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a><br><br>Check out participant bios:<br><a href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a><br><br></div></span></blockquote></div><br></div></div></body></html>