Three days without reasonable power are bad for smartphone owners. Three days without electricity if one has to rely on his cell phone and thus still have to work are a no-go. The anchor to the rescue! He invites the iPhone several times completely, perfect! The charging time of the battery pack itself moderate! The anchor has a 1A and 2A output jack and an LED lamp. The only drawback, the power button is a bit too easy to trigger pressure. Here, a manual switch might have been better.