Join Date: Sep 2008
Location: Sunny Florida (central)
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You might want to talk to John at Hotwire Enterprises. They are the importer for the Kiss, he knows his stuff will give you the straight poop. Weather you need a controller depends on a lot of variables, like the size of batteries, power usage, amount of wind, and additional PV sources.
I've had my KISS for ten years. Very good machine.