We were able to collect the required car battery the next day, however on fitting, it did not have enough power to start the car. I charged it overnight, and then worked fine the next day - however the following day, it would not hold a charge; so was returned to the shop. GSF were very good at replacing the battery, and on testing it, discovered that the battery was faulty. However it would have been beneficial to have tested it initially before handing it over, just to be certain it worked. That would have avoided a spoiled weekend with a non-starting car. They tested the replacement and that was confirmed as OK, and it has since performed faultlessly.