TECHHorizon's video: Solar project for shed off grid not quite there yet

Please note I am no expert or am qualified to advise on any electrical queries, this video is just for my own project. I recently purchased a 20w solar panel (18 volts) with charge controller from Ebay, it was only around £39, the idea was to power a wireless CCTV camera (clever dog, which I reviewed some time ago) and a light. The system is very basic but should be enough for what I was, the panel should i-change the 12.0ah battery even on dull days depending on the total usage load. I understand there needs to be calculations to be done when setting up a full off grid system, this is just more of a test to see what I can get out of it. The camera pulls about half an amp at 5v and the light shouldn't be too much, it is an LED spot lamp for a vehicle which would only be used when entering the shed. This protect isn't over yet, I have come into some problems but will update when I get further along. Thanks for watching.