I been to Tesco now too. Told them, they tried it and saw it didn't work. The had some of the Note's on display and tried to charge one of them, which didn't work. He then took me to the counter and exchanged it for a brand new one. Suppose i'm lucky mine did it so quickly as i, like you, would have to re-install all my Apps. So i now have a totally new Tablet on charge.
I didn't get double points though lol. Though i don't have a clubcard anyway.