Yeah, my old man's an electrical engineer but since everyone knows what I'm talking about and "240v" is quicker to type than "standard wall sockets in the UK" I'll keep referring to everything that comes out of the wall as 240V (unless I'm specifically laughing at the US).
I mean my shaver runs plugged into the wall. No batteries to get weaker and fail over time. It's 240V or nuffin.