A week ago went to Halfords to get a free battery and alternator test due to warning lights. Jake did a test on my car and told me it was the battery which needed replacing, I asked if he had done the alternator test and he said yes. Had a new battery fitted. Yesterday my car came up with the same warning lights and went in limp mode. Took this to an independent garage where I needed a new alternator. My car was misdiagnosed, and has costed me ?570 on top of the ?100 I spent at Halfords. To then be informed by the manager that Jake has 4 weeks training which clearly is not enough as he is not competent to do a battery and alternator test let alone anything else. The manager suggested I do not leave a review however feel as though others need to be aware.