<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">Way too many variables to know 6 days to 6 years. </div><div dir="ltr">When inverters get this old I tell people they have 2 choices. Run it until it dies or starts to have issues often leaving them without power ,running on a generator or replace on your schedule and product availability </div><div dir="ltr"><br></div><div dir="ltr">No right or wrong answer really. </div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><br><blockquote type="cite">On Apr 10, 2026, at 12:47 AM, Benn Kilburn via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="auto">Hi there Wrenches far and wide, </div><div dir="auto"><br></div><div dir="auto">I’m wondering what sort of lifespans you’ve been seeing or expecting from the XW4548 Hybrid Inverter/Charger line. </div><div dir="auto">I’m swapping out the batteries on one that was manufactured jun19/2008. </div><div dir="auto"><br></div><div dir="auto">I don’t have much insight on the system overall other than the batteries are 5yrs old and have been charging hotter than usual and the owner accepts a bit of maintenance neglect. </div><div dir="auto"><br></div><div dir="auto">Thanks,</div><div dir="auto">Benn Kilburn<br clear="all"><br clear="all"><div dir="auto"><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div style="font-family:tahoma,sans-serif;font-size:14px;line-height:17px;font-weight:bold;color:black"></div><div style="font-family:tahoma,sans-serif;font-size:12px;line-height:14px;font-weight:normal;margin-bottom:10px;color:black"><table border="0" cellpadding="1" cellspacing="1" style="width:384px;font-family:tahoma,sans-serif"><tbody style="font-family:tahoma,sans-serif"><tr style="font-family:tahoma,sans-serif"><td style="width:96px;font-family:tahoma,sans-serif"></td><td style="width:272px;font-family:tahoma,sans-serif"><div style="font-family:tahoma,sans-serif;font-size:12px;line-height:14px;font-weight:normal;margin-bottom:10px;color:black"><div style="font-family:times;font-size:medium;color:rgb(0,0,0)" dir="auto">
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