Subaru Assistance turned up within eta , checked things over, started the car and said it was definetely the battery - alternator, starter etc all ok. In the absence of any tools to hand went to Halfords as "we'll fit it" - bollox.....muttered something about not being happy to d/w it because of immobiliser ? and any way they were going to charge £87 [N] for the battery - I only want ONE matey. Ended up getting battery comparable to their HCB005 from my mate Jim Chalmers shop on Harmer St in Gravesend (outrageous bit of advertising ! ), borrowed his tools and paid him the princely sum of £39.99 [] [Y] and he's got more idea than the kid in Halfords