ZeroLemon 8,500 mAh Battery Case
Last but certainly not least is the ZeroLemon 8,500 mAh extended battery case for the Galaxy S5. If a big bulky case is the least of your concerns, consider this option. It offers triple the battery life delivering 8,500 mAh of power to your phone, has drop-protection TPU lining around the entire case, and even offers a belt buckle clip. It's the jack of all trade case, but comes in quite large.
It will feel like you're holding a brick, but will keep your Galaxy S5 working for days on end without a recharge. It comes in multiple colors, and even supports NFC.
ZeroLemon 8,500 mAh Battery Case - Buy for $63
As an Amazon Associate I earn from qualifying purchases.