- Adapter is not compliant with USB charging specification 1.2 (both data transmission lines D + and D- must be shorted)!
Consequently, only shop with USB host connection is working (100mA or 500mA). AC charging function does not work in spite of the original cable. (It would only work if the data lines were shorted in the cable, then would the cable for data transfers no longer be used). With activated navigation and full display brightness, the charging current is not enough to charge the battery.
The product description should be revised accordingly, in my opinion.
EDIT:
There is now a new version that meets my needs:
See also the comments