AC Coupling

AC Coupling: "AC Coupling has been around for a while, and we have recently teamed up with Magnum Energy to create an easy to use pre-packaged system that can utilize this awesome technology. AC Coupling allows a grid-tie system to work with a backup battery system that can be charged even during grid black outs. This is a perfect add-on for folks who want to include a battery back-up package to their pre-existing grid-tie system.