I organised for RAC to visit my home between 11.00 am and 12.00 noon. The mechanic arrived at 12.45 pm to fit a new battery to my BMW 1 Series. He brought the wrong battery! I have subsequently made an an appointment with a Battery & Tyre Centre to fit a replacement battery minus the large RAC markup. The convenience of having a new battery fitted at home is far out weighed by RAC prices.