I am using a bread board implementation of Arduino. I want to charge it via a solar powered batteries. I am looking for a commercial solution in which I have some reserve battery such as 2000 mAH or more and a automatic functionality that whenver solar power is available,it uses that for power and when it is not then it uses that battery to power the system.
Can you please suggest any commerical products available for this. I want to have a compact one solution for this. Dont want to get in to separate solar panels and other stuff.