Fair enough, BobS. I have a 10A charge controller that cost me about $30. And it does look like the panels in this setup are independent. So, you can reconfigure as you please.

But here's the rub, as I see it: this package is less and less of a deal if you have to start adding external components.

I would argue that if you buy two of these setups, you'd be better off keeping them separate, hooked to appropriate batteries.

On that theme: deep cycle batts are nice, but cheapo inverters are designed for car batteries and shut down at ?? 10.6 volts (I think) to prevent damage. So, the xbox goes down, tough luck kids. But the second batt keeps running the LED lighting and the radios, which really matter.

My 2-cents' worth.