<html><head><base href="x-msg://1009/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">HI Dana,<div><br></div><div>I'm curious about why you differentiate sealed vs flooded batteries?</div><div><br></div><div>thanks,</div><div><br></div><div>jay</div><div><br></div><div>peltz power<br><div><div>On Dec 12, 2010, at 3:13 PM, Dana wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; 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: 0px; font-size: medium; "><div bgcolor="white" lang="EN-US" link="blue" vlink="purple"><div class="WordSection1" style="page: WordSection1; "><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">Great discussion and Thanks to all of you for the input.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">I thought of attempting a wrap up of the various presentations but there are and always will be many variables in battery storage and insulation requirements. Here are my thoughts and a distillation from you all with respect to my high elevation climate in W. CO. - 6 months of winter and cool nights in summer [typically].<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">Type of battery - Wet VS. Sealed batteries. : depends on size and usage of system and client choice.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">Climates – 4 season with 5-6 months of winter like conditions VS. a mild year round costal climate. : A long winter climate can seriously chill a poorly insulated bank and therefore reduce capacity when the bank get cold. I get more calls each Nov. from new to off grid folks with an under sized array and cold battery bank about reduced capacity.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">Does it cool off at night in the summer? VS. It is hot 24/7 for 4 months?<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">Size of bank – Small VS. Large. : Smaller reacts more quickly to a cooling or heating trend VS. Larger react slowly.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">Ambient building temperature. – heated building VS. walled in shed/free standing battery box in a snowy scenario. : If I can put the bank on a temperature controlled radiant concrete slab I do so.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">Ability to sink the battery bank into the ground VS. not being able to do so. : installation & cost can be a challenge here.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">Powered venting VS. convective venting ; Powered with a back draft damper seems to be a better option in winter climates. I have used the Zephyr Industries powered vent with backdraft damper for many years with great success.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">As mentioned batteries are an electrochemical unit that requires, like us, a narrow window for temperature to exist and operate efficiently. When working hardest, typically during winter, the recharge requirements are high and the hours of sunlight are low, therefore the temperature window is best on the warmer end of the range.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">The time of year when power requirement can be lowest in summer, the usage is lower due to long days and lack of heating systems drawing them down over night, unless you are irrigating and perhaps a PV direct design would then be best.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; ">Thanks all.<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-family: 'Century Gothic', sans-serif; ">Dana Orzel<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-family: 'Century Gothic', sans-serif; ">Great Solar Works, Inc<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-family: 'Century Gothic', sans-serif; ">E -<span class="Apple-converted-space"> </span><a href="mailto:dana@solarwork.com" style="color: blue; text-decoration: underline; ">dana@solarwork.com</a><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-family: 'Century Gothic', sans-serif; ">V - 970.626.5253<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-family: 'Century Gothic', sans-serif; ">F - 970.626.4140<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-family: 'Century Gothic', sans-serif; ">C - 970.209.4076<o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-family: 'Century Gothic', sans-serif; ">web -<span class="Apple-converted-space"> </span><a href="http://www.solarwork.com" style="color: blue; text-decoration: underline; ">www.solarwork.com</a><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-family: 'Century Gothic', sans-serif; ">"Responsible Technologies for Responsible People since 1988"</span><span style="font-size: 11pt; font-family: Calibri, sans-serif; "><o:p></o:p></span></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-family: 'Century Gothic', sans-serif; ">Do not ever belive anything, but seriously trust through action.<o:p></o:p></span></div></div><div style="margin-right: 0in; margin-left: 0in; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0in; margin-bottom: 0.0001pt; "><span style="font-size: 14pt; font-family: 'Century Gothic', sans-serif; "><o:p> </o:p></span></div></div></div></span></blockquote></div></div></body></html>