So, I've tried my fair share of portable chargers and this one is on the top of them right now, I had a flat charger shaped like a mobile phone but which outputted only 1.0 A of power but this has an output of 2.4 A, which can charge a phone twice as fast so here are the tech specs of the same.
Input: 5V---2A
Output: 5V--2.4A
10000 mAh
enough to juice an iphone for 3 times and a samsung for 4 (depending on the model).