I bought a new Optima AGM Battery today from a Battery specialist in Abergele. They usually do mail order but I went to pick up (bank holiday postal delays). Unfortunately they do not do a fitting service, but they said the garage across the road would probably fit it.  So I went and asked, as soon as I mentioned Hybrid the shutters came down. They did not want to touch the car in case the process of disconecting and fitting new upset the ECU and they ended up with a £800 bill!  I said ok, when