Solar Charger Circuit

The Beginning

I’ve been interested in renewable energy for a while now. This past Spring during my trip to Kuala Lumpur, Malaysia, I picked up 2 solar panels that could provide 10 watts of total power under optimal conditions. Oh, and they were only $30USD. Now I have an excuse to start generating my own power!

My goal was to be able to charge a 12V battery that would then be able charge 5V USB devices. There we a few things that I had to keep in mind.