Question about Poly Voyager Focus UC B825-M

Here is the charging cradle: HP Voyager Focus UC USB-A

You can find the charging cradle here.
Digitec only has the one for V2, looks exactly the same, probably even fits, might be worth a try: Poly charging cradle Voyager 43

I was supplied with the charging station. Alternatively, I use the charging cable (also supplied), e.g. when travelling