Among the chargers themselves:
They are elegant and piano lacquer to convey elegance. But already when inserting first displayed at a ultra-bright blue LED. Especially at night in the bedroom, I feel that to be very disturbing. Well, not to make you stop over a label.
Second shortcoming which reveals itself immediately after being switched on: they cheep / whir - both of you! Under load it is even worse. Also when sleeping very obstructive.
Finally, the worst: I have not measured it, but I do not think that really 2100mA come from the chargers out. My HTC One X, I invite with the original HTC PSU (1000mA) in just over an hour to complete. The mumbi Chargers need this more than 3 hours. Furthermore, I reported my phone when I load it with the mumbi chargers and thereby use (games etc.) that the power of the connected charger is not sufficient to supply the phone with enough energy. Again, I have no problems with the original HTC Charger.
My Raspberry Pi (lt. Forum recommended with 1500-2500mA to provide for stable operation) runs quite unstable with mumbi chargers. With the HTC charger, there are no problems, although this is advertised with less power.
Conclusion:
rather just what decent buy. The unit here is to use no more than for emergencies, because it does not deliver what it promise.
