I have a few smaller 10 amp portable chargers, but i find between all my devices they don't even last the day.
Enter this behemoth of a battery pack.
With 20 amps (20000mAh) of capacity it has enough to keep my iPhone, iPad and laptop charged for a day of full use, which is fantastic. I chose the iMuto because it support QC 2 and 3, so if your device supports up, you will notice significantly improved charge speeds.
The LCD remaining capacity readout is a feature that i miss on my other chargers, and is a vast improvement over the old 4 dot system, you know exactly how much charge you have left.
It also comes with a two foot long micro USB cable, which is longer than the short ones that usually comes with these portable chargers, and means that i can keep the charger in a back and my phone in my pocket.
Now, as you would expect with a charger with this much capacity, it is big and heavy, but this isn't necessarily a bad thing. It may be big, but it is also quality. If you want a small portable charger then this may not be for you, but if you wasn't something that will meet all your charging needs, then i would absolutely recommend this for you. The other thing you come to expect with products like this from china is that the instructions are in chinglish, but lets face it, you dont really need the instructions for this. Charge it via the included micro USB and away you go charging it with whatever cable you phone uses via the standard USB port.