How safe is it to use a third party, non-Apple charger on my Nano? We've had it for years, since the iPod Classic, and I've always used it for charging iPod's. I plug in the original iPod cable to the adapter and then plug that into the mains. I've been using it to charge my Nano. Should I be? Can it ruin the battery? Or is it safe to use? I need it because I'm going away on holiday, so will need the adapter, and since it's a three pin plug, I'll need to use a European mains adapter as well. Can I do this? Or do I need to fork out £25 for an 'official' one?