Until Christmas so that only the iPad first generation was always loaded and an iPhone 4S, which went without problems. Christmas is then pulled an iPad Air and I was also to be visited and wanted my iPhone 6 load. But that did not, were heard constantly only a Bing-Bing-Bing. Say the iPhone has detected the charger and for not even 1 second to load and then the connection was lost, and then the charger would be recognized again.
The same problem could be reproduced with an iPhone 5s and iPhone 5 and the iPad Air. It did not matter if you have a cheap Lightning cable or better from Belkin or AmazonBasics or the original Apple. The result was always the same, the connection has been connected and disconnected in seconds.