jimmy13 wrote:I would recommend a new battery and optimate to keep it in a good state of charge while not in use. Also you might want to check your charging circuit to make sure your stator hasn't started to break down.

Thanks very much for reply jimmy, appreciated

firstly it is a new battery and I have done the normal tests etc and it seems to be fine

I had a feeling it could be something like the stator you mention, something little as the problem is kind of abstract. But i have never had the chance to get to the charging circuit in detail enough, so it's new to me. Have you any tips to make it easy? thanks