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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello wrenches,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am quoting a job to do a simple battery bank replacement on an existing system that has a Trace SW4048 inverter.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have not done any substantial work on these revered systems, but seem to remember that removing the batteries will lose all the custom program settings in the inverter.<o:p></o:p></p><p class=MsoNormal>I seem to recall there was a product that could be purchased that used a 9V battery to hold up the setting memory while the main batteries were disconnected. Could anyone tell me the name of it?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Or is there a better solution out there? I see a couple of products that claim to read/write the SW memory from Right Hand Engineering and Maui Solar Software – anyone used them or recommend against them?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas'>Glenn Burt<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas'>glb, Consulting Company<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas'>NABCEP Certified Solar PV Installer TM<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas'>NYSERDA Eligible Installer<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas'>Microsoft Certified Professional<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>