1 Key Power Most Compact 12000mAh Battery Power Bank

Key Power: Bringing Power to your On-the-Go Lifestyle.

Portability:
Lightweight and ultra compact aluminium design.

Capacity:
A Massive 12,000mAh battery capacity that can charge most current generation phones 3-8 times.

Safety:
Reliable cells made from Grade A+ Premium batteries rated for over 500 cycle charges! Built-in short circuit and overcharge protection will allow for continuous and rigorous use with peace of mind.

Practical Sleek Charger:
Perfect for indoor or outdoor activities like travel, camping or hiking, emergencies, commuters and families.

Dual USB Output:
Total 3.1A max to deliver the fastest charging speed.

True Value Capacity: 
Unlike other sellers, our capacity is true as listed. We will never advertise something that we cannot provide to our loyal customers. So you may rest easy knowing that you are receiving a quality product. 

Aluminum Chassis 
Made of High quality aluminum, Key Power will have one of the most beautifully designed and most aesthetically pleasing chassis in the market today. 

Best Warranty in the Market: 
12 month warranty is provided in which we will exchange your damaged or defective unit for a brand new one! 

For Optimal Use: 
• Use the included cable, your original cable or a third-party certified cable. 
• Compatible with the new 12 inch MacBook, 2015 (USB-C cable needed), Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices except for the iPod nano, iPod Classic, HP TouchPad, Dell Venue 11 Pro, Asus tablets and some GPS and Bluetooth devices. 

Package include: 
• Power Bank 
• Micro USB to USB charging cable 
• FlexiLite 5V LED light 
• User manual 

My thoughts: 
Power banks are so convenient. They allow you to charge on-the-go , so you aren't tethered to a wall, charging your phone. I've had a few smaller ones, but this Key Power charger has a lot of juice and can charge multiple times. 
Out of the box, you get the power bank, USB to micro-USB charging cord, USB LED light and instructions. 
To charge up the power bank, you use the included charging cord and any USB outlet to start charging. The cord is only about 6 inches long, so if you want a longer cord, you can swap it out. The short length is perfect for setting it on the floor at the base of your PC while it charges. As it charges, you will see flashing blue lights near the ports...they will flash in turn until all the bars are lit solid. Then you have a full charge of 12000 mAh. That is a lot of charge. I have a super powered battery in my phone (5000) and I put it to the test. I was able to get 2 full charges out of it and there was still juice left in it. That's impressive. 
To look at, the power bank is very sleek. It has an aluminum casing. All the sides are flat, so it stays in whatever position you place it, no rolling around or off edges of tables. You have two ports for output, so you can actually charge two devices at the same time. One is 2.1A and the other is 1A. They are not marked though, so you have to check the manual to see which one's which. It is rather heavy, compared to those little round ones that only charge 2200, but that is to be expected as it charges 12000mAh. You can turn it on quickly, simply by giving it a shake. It has shake-to-wake technology. There are no buttons to press at all. It does not shake to turn off though. It just goes off on it's own after a certain amount of time. 
Included is a handy USB powered LED light. You can pair this with your power bank to have light on-the-go. I actually like it as a light to put by my laptop, so it illuminates the keyboard. It is also great for reading in the car. You can charge your phone with one port and have the LED light in the other port. 

I received this power bank in exchange for my honest opinion. Overall, I am impressed by this power bank. It does everything advertised and I am very pleased with it's performance. It's capacity is higher than any other power bank I've owned, so I have been using it as my primary charging unit.