I did see somewhere mentioned Nkon, and looks ok but they did not have in stock what I looked for and could not take rest order.
So any tip is appreciated.
Also with “trustworthy” I mean you got the right goods 
-lyse99
Nkon.nl and akkuteile.de are the eu-stores I ordered cells from, several times now from both, and I can highly recommend them.
Good experiences with nkon. Genuine stuff and if if something is not in stock, it usually is within days.
Thanks for the feedback on my question!
-lyse99
Nkon now had what I wanted in stock so I did my first order there, see how it comes out.
-lyse99