Maxdara 5,200 mAh Galaxy S7 Edge Battery Case
It's certainly nothing pretty, nor thin, but this Maxdara case claims to have a massive 5,200 mAh battery inside. Nearly triple the battery life for Galaxy S7 Edge users. We've never tried this brand, but so far these are some of the only options available for those who aren't willing to spend extra and get a Samsung or Mophie.
It has a built-in kickstand, lots of power, all the necessary cutouts and comes in multiple different colors to match the Galaxy S7 Edge..
An honorable mention goes out to ZeroLemon as well. They have a Galaxy S7 Edge battery case with an 8,500 mAh battery. Which is ridiculously huge and can charge other devices at the same time. It makes the phone more than twice as thick, so it's not ideal, but if you need it you need it. Read more here.