Thanks for all the replies, the problem seems to have been solved with a new battery (touch wood!) I measured the battery immediately after a ride the other day and it read 13.06v, I chained it up for the night (took about 5 mins) and retested, it read 13.02v. I then left it alone for two days (no charger) and it read 12.78. I then charged the battery overnight and in the morning it still wouldn't start, I couldn't pin this on either the battery or the charger so I bump started it and went for a 40 odd mile ride, immediately after stopping I tried the button and it wouldn't start Conclusion = battery is fooked! So I went with Stu's recommendation and bought a Motobatt, all is well so far However, out of curiosity I measured the new battery and it reads 12.98v, the old one currently reads 12.8v and will not start the bike. It seems strange that with only 0.18 extra volts the bike starts immediately - is there more to it? Either way the Motobatt seems to have done the job cheers all