One of the items we store. more and more frequently, in some manner or another, is electricity, either within rechargeable batteries or in power banks of varying capacities - a lot of these come equipped with some sort of flashlight bulb and outlets for charging other devices.

So far, I am a Goal Zero patron - I have two portable solar panels and several lights, lanterns, and smaller power banks. They are great, but I am dimly aware of cheaper alternatives and brands that are just as effective, if you know what you are doing with electricity (which lets me out). Basically I am content to keep batteries and cell phones working.

What are the options for effective systems that corral and store electricity?