Recently I've had a couple of occasions where my car hasn't wanted to start, basically like the battery is dead, yet 2 secs on a jump start and its fine. Obv the weather has been getting colder yet on one occasion it's had a decent run then left for a couple of hours and problem returns. It's not every single time just the odd occasion.
I'm going to get a free check on the battery as I'm not sure how old it is, but is it worth spraying a bit of wd40 around stuff to keep the damp out etc to see if that cures it???
Cheers