Good day! My iPhone 5c battery was shot, so I bought a replacement battery. Actually 2. Easy enough to install, but each battery will not charge. Available remaining just decreases when plugged in. There is nothing wrong with the charging cord, as it works for other phones. I also made certain that there is no debris in the port. The lightning bolt is present to give the appearance of charging. But somehow between the port and the battery the charging isn't happening. Anyone have any ideas for me? Thanks so much.