To date I have moult all devices that recharge from their mains sockets / usb. Often as they like, therefore I am wrong in taking of amperage which has the effect of either my hold a charge or not to charge. With this device although you need good eyes at the beginning to find the right USB port, I always have the right plug. Its cable is about 1m50 allowing you to do spring from anywhere on your desktop. The case is sober, bright white that changes the usual black boxes. As to other users I would have wished for a led a quick visual check of the load. The model I have is 25W which is enough for most of my devices are never dishes simultaneously.