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<div id="signature">It depends on how the BMS shares with the new BMS. A state of life measurement, the charge algorithm, and ? has to account for this for them to charge and discharge well together.</div>
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<div>Pretty safe to say one year for many makes of battery. Kind of like bussbar use in large systems, is a way to think about this.</div>
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<div>A good battery system will know and log this also for warranty.<br />
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<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
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<p id="reply-intro">On 2024-04-23 2:03 pm, jay via RE-wrenches wrote:</p>
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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">HI All<br /><br />Speaking of batteries I wonder what you all make of this.<br /><br />I was reading the Fortress battery manual and it says they don’t recommend adding new lithium batteries to older lithium batteries if the age is over 1 year difference.<br /><br />Thoughts?<br /><br />thanks<br />jay<br />_______________________________________________<br />List sponsored by Redwood Alliance<br /><br />Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank" rel="noopener noreferrer">http://re-wrenches.org</a><br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br /><br />Change listserver email address & settings:<br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br /><br />There are two list archives for searching. When one doesn't work, try the other:<br /><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" target="_blank" rel="noopener noreferrer">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br /><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">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" target="_blank" rel="noopener noreferrer">http://www.re-wrenches.org/etiquette.htm</a><br /><br />Check out or update participant bios:<br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">http://www.members.re-wrenches.org</a><br /><br /></div>
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