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Is the XW+NA compatible with Tesla Powerwall?

The Tesla Powerwall storage system requires 350-450VDC from direct PV array input. This would be in parallel to a grid-tie solar inverter. It would be possible to "AC couple" the XW to provide backup in the event of an outage, but the XW battery operates from a much lower DC voltage (XW4024-24V legacy model or XW+NA-48V). See attached diagram. 
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