Absolutely perfect! 1

Was delivered directly through Amazon in the usual speed and good packaging.

After unpacking it is striking how small the battery is actually: Despite 6400mAh he slips easily into a medium-sized man's hand hiding. The black (in my model) Aluminium has a high quality and robust, this high quality is also reflected in further consideration.
The two built-in USB ports and also the Micro USB connector (for charging the battery) are perfectly finished, plug locks in a clean and safe. The battery status can be read via four LEDs (LED 25%).
The charging sockets are labeled 1A (for smartphones and other small appliances) and 2.1A (Tablets and rapid charging), it can also charge two devices simultaneously.
Charging for all devices I tested was similar, as when the device is charged via an AC adapter.

For this review I've made even bother to monitor the charging process and to use the battery only EasyAcc for the device during the test. The tested iPhone and iPad were in each case turned on and in normal use.
The iPhone (internal battery about 1500mAH) I could 280% charge, which should ensure the also three full charges when turned off iPhone. An iPad mini could be recharged by 60%.
Excluding the losses in transforming the voltage and the charge losses are likely to be pretty much given 6400mAh.

After several weeks in frequent use, I can wholeheartedly recommend the EasyAcc battery (especially for such a low price), cons I have not found.
Even smartphone users should duration with this battery loose an entire weekend (from Friday morning to Sunday night) persevere and even additional energy for charging a headset or other small devices have fewer (with an e-cigarette also in use with me).

Therefore, full marks from me: 5Sterne