Gadge and Grumpy,I'm back, sorry I hadn't repied to you Grumpy. Nothing else is connected up to the battery. The previous tenant installed the starter (from a volvo) because his daughter who was previous to him, could not start it with the cord. Rather than selling he changed the starting mechanism. The ring gear/flex plate was found in the corner of a shed somewhere. The battery is a permanent setup so I don't think it was used as a spare to start something else. Yes Gadge the battery does run at a total loss, something I can live with. I used her today like most weekends lately, had three hours run time and two starts from drink breaks and the forth start was showing low output. Had enough by then anyway. A few hours on the charger tonight and it should be ready for tomorrow.
Regards Phil