I'm only half kidding. I'm a bit of a prepper and I have lots of powerbanks and devices that charge from USB but besides idling my truck I really had no other way to charge any of them in case of a long-term power outage which seemed a bit of an oversight on my part.
Not like this solves the issue. 30 watts (under ideal conditions) isn't much but it's a start.
The dimensions of that first panel are more than double compared to mine so obviously it has a higher output. I intentionally wanted one that fits into a backpack. Whatever output this produces is vastly better than the 0-watt charge capability I had before. I'm well aware that spending more money and getting larger panels would give me more output. However, it's for charging small handheld electronics - not for running a fridge.