If I'm honest: Charging via USB is for me partly a closed book. I specially bought myself a small USB-meter for voltage and current, to find out why the store sometimes "back takes a little longer". As the main culprit I could so after all, ever identify the charging cable, the partially loaded only with minimal power. Under maybe 20 different cables were just 2-3 left, showed good values. Short cables with thick cross-section are to be preferred, but there are also exceptions. Even and especially "original cable" that come with the tablet, smartphone or even the Power Bank, no guarantee short loading times.
But also my tablet so I could expose a bitch, which loads only fast if the USB cable already is under tension when plugging. Maybe I will one day have to understand the extent to which equipment and loaders "entertain" a suitable cable as to which is the appropriate charge current and probably why the charging current is changed from time to time in both directions.
Since the Power Bank can nominally more power available as the consumers take my hungry art, I have two devices connected to test on the meter at the same time on one port - of course with my two best cables.
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I have the version with 10,000 mAh in white. Since this is not my first Power Bank, I noticed the first light weight at: 186g should be for this capacity quite tip the market. The dimensions are similar to those of an iPhone 6, only slightly thicker. Very apart is the rounded housing in a sleek pearl white.
As I have noted many times before, the distinction between both terminals is not necessary with this device; both deliver the maximum current: this I measured with good A 2. Here, the housing heats easily. Switching on and off take place automatically at the insertion of a consumer or full charge. The Power Bank itself is loaded with a maximum of 1 A, the usual value in this category. The only control element, a button next to the Ladefüllanzeige (4 LEDs) only to this switch for a few seconds is actually.
After I in assessing a Power Bank mainly the capacity and the loading times and maximum currents have a closer look at some time happened to me recently another mishap: My Bluetooth headset was empty. No problem, I thought, what I've finally a Power Bank while (it was a different model). However, the charging current of the headset was so low that the charging electronics of the Bank abschaltete immediately, because they probably thought the unit was full. At this power Theory bank now I can also invite my headset, it turns off only when the headset is actually fully charged.
Accessories include a microUSB cable and a 3-way charging cable (Micro-USB, Apple Lightning, Apple old) resolved that even are quite useful from its loading speed (especially the Micro-USB cable).