Pokemon Go is a lot of fun but it's also seriously tough on battery life. That's no surprise really when you consider it's constantly connected to GPS and requires the screen to be on as well as frequent access to the camera, and we've seen a phone die in just a couple of hours of play.
Happily there's a reall cool case which can help you through, and it looks like a Pokedex! It even has a built in battery pack, which is something we've resorted to carrying around over the last few days as part of our Poke-pack.
Npoole has put together a 3D printed model which you can see at Sparkhub and it also has some extra LED lights and an info table on Pokemon types taped inside the front door. This particular version was custom made for a Samsung Galaxy S4 and the user is hoping to include fans and more battery packs in the future, so they'll never have to stop catching.
Expect to see plenty more custom models like this in the near future, and Nintendo should definitely be looking at this market if they want to make even more cash.