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<blockquote data-quote="arwooldridge" data-source="post: 536044" data-attributes="member: 35807"><p>Two systems each with batteries, working independently, can interact badly. You get cross cycling, which I have observed, where one system discharged into the other charging that up, and vice versa alternately. The reason this can occur is the threshold for feed in are typically very similar, so which one decides to charge or discharge is fairly random. If the two thresholds are sufficiently different (eg 100watts and 300watts) the system may work. It's better to use master/slave connected systems if the inverters allow that. Alternatively two or more PV inverters would work independently ok if only one or none have batteries.</p></blockquote><p></p>
[QUOTE="arwooldridge, post: 536044, member: 35807"] Two systems each with batteries, working independently, can interact badly. You get cross cycling, which I have observed, where one system discharged into the other charging that up, and vice versa alternately. The reason this can occur is the threshold for feed in are typically very similar, so which one decides to charge or discharge is fairly random. If the two thresholds are sufficiently different (eg 100watts and 300watts) the system may work. It's better to use master/slave connected systems if the inverters allow that. Alternatively two or more PV inverters would work independently ok if only one or none have batteries. [/QUOTE]
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