Passable charger for emergencies

The flashlight also works very well and is light enough for most purposes.

The battery pack is relatively small and easy to handle. A short and very short USB cable is included, so you can charge the battery pack while you load the phone from the battery pack, but only with the limitation described below.

The charge level indicator consists of a series of blue LEDs, which also indicate that the charger is ever switched on.

Because of the built-in voltage converter should be clear that you can not load 3.1 Ah in a smart phone from this unit, but only about 2 to 2.5 Ah. This is normal and to be expected.

For a load current of 2.1 A, the battery is relatively small. The discharge current inside the battery pack to the inner battery is larger by the required voltage transformer, probably 2.5 to 3 A. This is a 3 Ah battery very much, so you must not expect miracles in life. The device is probably best suited for emergencies, not for everyday use.

A disadvantage of this battery pack is that you the battery pack and a smart phone with a large battery and a high charging current usually not the same, ie cascaded, eg can overnight, upload, although the two included USB cable suggest this. Here cooperate two constructive weaknesses and ensure that it, for example, not rare today 2.1 A, does not work with smartphones, which have a much higher charging current than 1A.

The first structural weakness is that the battery pack can indeed deliver 2.1A charging current (what are internally least 2.5A needed because the voltage transformer), the battery pack to his own charge but draws only 1 A current. Therefore, the battery pack when you load it simultaneously and discharges, discharged relatively quickly.

The second constructive weakness is that the battery pack when its battery is discharged, the charging current for the smartphone does not throttle to 1 A, as many chargers do, but charging the smartphone turns off completely.

This means that, if one evening connecting both devices to a loader discharged in the morning although the battery pack is fully charged encounters, the smartphone was but little loaded, namely until the battery pack initially ran empty.

Therefore, you need either two chargers or you have after about 4 hours when the battery pack is nearly full, start charging the smartphone by pressing the button on the battery pack again. It is unfortunate and incomprehensible that the battery pack does not automatically do.

Yet a little recommendation. If you never need a battery pack in everyday life, but for example, only when traveling, then you should have it only about half full charged for storage and full load only for a trip. So the battery will last a little longer. Quite empty but it should never be on prolonged storage, because that would destroy him.