In preparation for a trip to Germany I had to check out the charging units I have for all my equipment. I have finally determined that the Phonak rechargeable unit uses the USB to USB Micro-B connector. Phonak tech support had mistakenly said that the connector was a Mini connector and not a Micro connector.
Phonak provided me with a free adapter kit which included a data cable labeled USB to USB Micro and NOT Mini. So, unless the label on the package is incorrect, I believe it is a Micro USB and not a Mini. I won’t be using the Phonak adapter for Germany as the prongs look a bit smaller than the adapter I know from experience works in Germany.
It was important for me to know which connectors to use as my cell phone and Kindle use the USB to USB Micro-A which is just a little bit bigger than the Micro-B.
I hope this information will be helpful should anyone need to replace their cords.
I solved the problem of the short length of the charging unit by using an Anker PowerPort Cube which has three outlets and 3 USB ports plus a 5 foot long power cord which is connected to a power strip. The cube is only 2.44" x 2.44" x 2.44" so it is perfect for traveling.