I've read some mixed reviews about some of the cheapest of the cheap generic (no name) charge controllers. I've got one, but I haven't hooked it up to see how long it runs before it cooks a component inside. I bought it to use on a 12W panel to keep my boat battery charged.
That said, I'm running a Morningstar sun saver 6 on my 20W 12V panel. My intent with this setup was to run my wifi router, I just didn't get to wiring up the router to it yet.
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