OPTIMUGEN PowerBank 10000, One of The Smallest 10000mah External Batteries, Ultra-Compact, High-Speed Charging Technology Power Bank for iPhone, Samsung Galaxy and More

Impressive, great charging device! It actually charges my phone to 100% from being COMPLETElY DEAD! I was shocked considering most of these external power bank devices will get you to about 20% or less (and that's on a FULL charge) so I was pleased to find something that actually works! I love how there is a flashlight included too because really, who doesn't need a a super handy flashlight every so often?!? I also love how the blue charging bars show you how much 'juice' it has left to charge your devices with! Only complaint and the only reason it didn't get 5 stars is because it is REALLY heavy for a simple battery pack (also kind of bulky) I bring this with me when I KNOW I am going to need it HOWEVER, it is not something I would carry around in my purse or pocket everyday because of it being so cumbersome :/

Best power bank I ever used. Charging fast and good looking. Great to have one.

TLDR; It works great for a week then it shorts your cords.I purchased this cord because I traveled all the way from CT to TN in a minivan. I went through about 9 states and I wanted my phone to be charged at all times. For the first week, it was great. The cord it came with broke when I pulled on it a little, but I bought a charger, not a cord. I wasn't expecting it to come with a cord, so I brought my own. I used that other cord to charge my phone and then the cord shorted. Thinking it was probably just the cord being old, I used a new one and that one shorted too. It's really unfortunate, it used to charge very fast too.