Hi guys

Thank you everyone. I'll consider try dopping the voltage as
described.

It depends. Some things don't seem to care, 5 volts or 6 volts or even
8 or 9 (not recommended) work e.g. EdiMax and D-Link routers I have.
Other things will work with only 5 volts e.g. a Linksys PAP2 I have.

Thats interesting. Mine is a D-Link, and it seems to be doing fine so
far at 6V...

Regards, Jonas