Originally Posted By: Tjin
If the battery in the solarcharger is enough for your expected use, then you don't need the solar part.


Sorry, I misunderstood. In my case, the WakaWaka Power+ will charge in almost any daytime light conditions, albeit it might be quite slow. I keep one each along with a spare Lightning cable in each of our two cars' emergency kits. I've also used them while camping to keep phones charged.