I haven't driven the car since Monday and this morning the battery was dead as a dodo. Not even a click of the starter!
It's a brand new battery and I fitted a new earth strap at the same time.
I'm just wondering what you would suggest investigating. I guess it must be a dodgy earth somewhere or maybe the alternator? I can't believe a new battery could die in 5 days when it's not even cold!

This was the old battery. What causes that greenish gunk to build up?? Could it be a clue as to what the problem is?
Thanks in advance