A:AnswerI am Not sure if this makes any difference but I charge mine on my husband's desktop computer. I receive a full charge and then I'm abel to bring my samsung galaxy from 4% to 100%. However when I have charged it on my laptop and put it away; not sure if it was just sitting too long or the laptop doesn't charge it fully, but I did not get a full charge on my samsung doing that.
A:AnswerI am not sure what your question is, but the port is most likely a micro USB port. By the way, I purchased one of these chargers a while back and was not impressed with it.
A:AnswerYou don't have to. Any usb cable with a micro usb will work. I plugged the wide usb side into my electrical outlet adapter to charge it since they don't supply a wall charger and had no problems. I think it may be small for the sake of convenience. At this point though if you don't already have an available usb/micro cable. You may want to just buy a new one.