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Some of the single point battery watering systems have a pressure regulator that plumbs right to the water tap with a small filter. <div>Apparently we in the solar business are more anal about using distilled water than many other battery users.</div><div><br></div><div>Ray</div><div><br><div><div>On Sep 2, 2008, at 6:46 PM, James Surrette wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="margin-top: 0px; margin-bottom: 0px; "> <font size="3" face="Lucida Grande">Hi Bruce,</font> </div> <br><div style="margin-top: 0px; margin-bottom: 0px; "> <font size="3" face="Lucida Grande">FYI, Deionized water is commonly used in battery manufacturing and large motive power applications;</font> </div> <br><div style="margin-top: 0px; margin-bottom: 0px; "> <u><i><a href="http://www.philadelphiascientific.com/deionizer.html"><font color="#0000ff" size="3" face="Lucida Grande">http://www.philadelphiascientific.com/deionizer.html</font></a></i></u><font size="3" face="Lucida Grande"></font> </div> <br><div style="margin-top: 0px; margin-bottom: 0px; "> <font size="3" face="Lucida Grande">Regards,</font> </div> <br><div style="margin-top: 0px; margin-bottom: 0px; "> <font size="3" face="Lucida Grande">Jamie</font><br><br>>>> Bruce Geddes <<a href="mailto:b.geddes@clear.net.nz">b.geddes@clear.net.nz</a>> 09/02/08 6:58 PM >>><br>> And one final question: In my original post I asked if deionized water was<br>> the same as distilled water. Nobody addressed this question. The customer<br>> said he investigated (Wikipedia, I think) and found no difference. Any<br>> other<br>> opinions, or (even better) definitive answers on this?<br>><br>> Thank you,<br>> Allan at PosE<br><br>An interesting post Allan and a pretty thorough run down on what happened -<br>thank you for the information.<br><br>To the best of my understanding deionised water has been passed through an<br>ion exchange filter so any reactive particles are removed. Distilled water<br>has been distilled (evaporated and condensed) and this does not mean it is<br>totally unreactive. Any volitile compounds in the water may have been<br>distilled also and still be in solution. It will be sterile though.<br><br>The water I source here in New Zealand (maybe not availalble in the States)<br>has been through both processes and is sold as a food grade product for<br>manufacturing tinctures etc. Dirt cheap from a bulk retail store unlike<br>distilled water which is pretty pricey.<br><br>Bruce Geddes<br>PowerOn<br><br>_______________________________________________<br>List sponsored by Home Power magazine<br><br>List Address: <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 rules & etiquette:<br>www.re-wrenches.org/etiquette.htm<br><br>Check out participant bios:<br>www.members.re-wrenches.org<br><br> </div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">List sponsored by Home Power magazine</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Options & settings:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><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></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">List rules & etiquette:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">www.re-wrenches.org/etiquette.htm</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Check out participant bios:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">www.members.re-wrenches.org</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div> </blockquote></div><br><div> <span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; 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; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>R. 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