Originally published on http://lifehacker.com/30-iphone-6-battery-case-the-cookware-set-you-want-a-1680649329 External battery packs are fine and dandy, but nothing beats a battery case for convenience and portability on long days where your phone might need a little bit of extra juice. Typically, they'll set you back $60 or more, but this one is only $30 today with code BH9VVFFN.