I bought a nexus 7 from amazon.co.uk and I didn't realise until it was too late that is was being shipped from America. I knew that there would be charging problems from the get go because as you can see I'm from the UK and we have different power supplies here. When I opened the box it came with the American two pronged charger and also came with a Samsung UK charger why Samsung? WTF. So I plugged the Samsung charger in and connected it to my Nexus 7 and the wall plug socket started making a buzzing noise quite loud. I took it out because that did not sound good even though it did charge the Nexus. I tried the USB charger that comes with the Nexus too and plugged it into my laptop but it would not charge whilst I was using the nexus. I suppose it would charge when the nexus was off but verrrrrry slowly. My question is, what would be the solution because I'm assuming the battery inside the American nexus is different to the UK nexus 7s so I can't use any generic plug with the same connection because it might damaged it right?