I’ve tried a lot of battery packs but none of them I’ve liked. I wanted a battery pack that lasted long and could charge my phone at least 3 times before I had to charge it. I purchased this one from Amazon and I love it. It’s portable and holds inside a lot of battery (12,000 mAh).
The battery pack has 3 ports. Two standard ports for any device and one smart port. The smart port is optimised to charge any device as fast as possible. So you can charge 3 devices at the same time, including tablets. In total it can charge an iPhone 6 times or a Samsung S4 4 times.
The battery pack has no buttons, so see how much juice it has remaining you just shake it, a circle will glow. If you see half a circle then it has 50% battery left. Took me around a day to fully charge it. Cost me around KD 15 in total ($49.99) on Amazon. You can purchase one by clicking [here].