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If you are weakening only and have good sun 4 big batteries 4 large panels will help. You will need a gen. for a/c. The batteries and solar should be acceptable if you are careful with usage. On my unit I have two deep cycle batteries and one panel. It gives us three days but we are very careful with usage. We don't us t.v. If you use t.v. get a 12 volt and keep it small. And yes they are available.
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