Check this out

[johnalee]

Has anyone seen this? I saw it on unbox therapy's YouTube channel. It's a battery and has a micro SD storage slot. Might be nice for people with 16gb phones. Plus the storage app looks pretty intuitive.

 

[erichards2]

Im sure they work, but I'm not familiar with that particular brand. Other brands such as Mophie has already had similar products such as the Mophie Space Pack. Shop space pack for iPhone SE/5/5s - Free Shipping | mophie
And their brand is more well known. Cheers