Hi Dna, it sounds to me like your battery has come to the end of it's life. Have you got any idea how old the battery is? A new battery should keep its charge for around 5 years or so, while an old battery loses its charge quite quickly, especially if it's sitting around. From what you've said, it seems that if the car is only sitting for one day it'll start up ok, but if left for 2 or more it won't start? That tells me that the alternator is doing it's job and charging the battery, but the battery is too old to keep its charge. You can have your battery tested easily by a mechanic or auto electrician, or you can do it yourself if you know what you're doing with a muti-meter. i hope that helps. Cheers for the reply. The battery is less than 12 monthe old, the old one having died a slow death. It seems to me that there is some sort or current drain when the car is left sitting. It normally gets driven every day and I know the alternator is ok.