ZeroLemon is known for tossing huge battery packs inside relatively good cases, and offering them for most phones. It took longer than expected, but the company has finally released a huge battery case for the Galaxy S7.
In fact, ZeroLemon just released a 7,500 mAh battery case for Samsung's S7. The phone has a 3,000 mAh battery so this case more than doubles it, allowing for owners to use it for 2-3 days straight on a single charge. It's impressive, but also pretty big. The photo doesn't do it justice, it's a brick, but worth it for many.