hi there, unfortunately not battery related, so took to boxermotorworks merc speciailst, he done some tests on star and he tells me he is getting no readings from the cluster and he says its probably going to be a new cluster job!! £6-700 alone for the cluster, ive left it there for him to diagnose and get back to me tomorrow with exact diagnosis, but he told me he thinks more likely it will reuaire new cluster! i will of course keep updated -