Why does my charger work?
1.
My wall charger (iPhone, Laptop) says it would accept 50-60Hz.
I have never found a problem with using them on any plane outlet though. Cockpit, Galley, Lavatory.
Why is it that way? Does it not matter if it's 50, 400 or 10000 Hz ?
2.
Are the shaving outlets in the Lav any different?
Because old shavers used to run a little faster in the USA (60Hz) than back home in Germany (50Hz).