In my opinion there is a slight confusion with chargers in the catalogue. In
my experience, the 94164 and 16521 chargers are different.
Charging 94164 was produced from 2008 to 2013. It is included in set 8887.
Charging 16521 is available from 2013 to the current time. It is included in
set 45517. What is the difference between charging 94164 and 16521
they are different shapes
they have different cable
they were produced in different countries
The characteristics of these chargers are the same.
As I understand it both chargers had analogues for UK and USA.
The photo to the left to the right 94164 16521.