Subject: Re: cell phone charger
Concerning technical details like 110 or 230 V I would ALWAYS check the device itself! Your charger should have the information printed somewhere. And if it's 230 V (which I suppose cause it seems to be a European one) you would need a converter - which would be a rather expensive investion compared to a burrowed cell phone.

Concerning the plane trip: I'd keep it anyway in the suitcase cause you're not allowed to use it in the plane itself...