I have been using this setup for 5-6 years now? I use it mostly for a lamp, a radio and my laptop. When I didn't have a good battery in my laptop and it was my only form of communication on the road for 5 months, I set the panel in the back of the truck, ran the cord in the back slider over the dog and into the front seat with the powerbox.
Other than replacing the battery after 5 years ($70-some) I have never had a complaint with it. I originally bought to to learn about solar power. I also like that it tells you how much juice you are using.
Plus a nice light
and I SOOOO needed and it was an added bonus as I didnt know it had it when I bought it.... a air compressor, which I used to recharge my pressure tank for the well when it 'drowned'.. as well as car tires.
I did run a small light on it, but the LED Christmas lights use less and can put out more light if you use more of them for less power.