This is why I bought this battery anchor with 16.000mAh. This has two USB ports with the anchor Power IQ technology; behind this marketing term that a circuit negotiates within the charger to the connected device, which current is preferred because when loading. That is usually the maximum of what this device can withstand and ensures fastest loading operations.
The shop works without any problems - now it only raises the question of how many times I can load my device with this battery.
By doing outcoming result I'm very happy: my iPad so I can fully charge again - and my cell phone battery nor equal to 2x.
The charging time of the Power Bank is, however, at around 8 hours very long, which is due to the low charging current.
With its huge capacity and its really perfect usability, this battery has a permanent place in my backpack. Without this I leave no longer my room :)