That's true. Many are crap. I even have one similar to the one in your post, same colour and all. I always ended up charging it from the wall plug. Not an ideal primary power supply but it sure looks snazzy. Thanks for the vote.

I do have a bunch of cool solar powered stuff though as well. I did a review of this Solar Power Bank Camping Light. I will seriously stand by this one, it does have a much bigger panel that is a separate piece so it's not really the best travel but great for the cottage or emergencies.

https://steemit.com/alt-energy/@solarguy/my-cool-rain-resistant-solar-flash-light-and-usb-charger-how-i-ended-up-in-china-5-years-ago

What ever solar can produce today in the future I know it will just get better.