Do Solar Panel Chargers really work?

Of course they do.

You might need to add some context though. If you are talking about small electronics, then I am not sure if they are any better than rechargeable batteries. But if you are talking about rooftop solar with a battery, then yes, they are very efficient.

10 Best Solar Chargers

Based on dozens of customer reviews and ratings, the followings are the top 10 best-selling Solar Chargers: