@Turnerfam raises an excellent point with your batteries. What do you have right now? Keep in mind if you have say "200 amp hrs) on your batteries only 50% of that is really usable. And thats with 6V deep cycles. If you have 12V deep cycles it's probably less? My current set up is (4) 6V batteries which comes out to 400 amp hrs. That only gives me 200 usable amp hrs. I'm trying to minimize generator time throughout the day with our residential fridge.
For just charging laptops, phones etc during the day I bet 100 amp hrs would get you through.
The best thing about solar is it's fairly cheap to get started and you don't need to do it all at once. You can just keep adding on as you go.
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