The supply and delivery can't be faulted however I had a problem with two year old battery and stop start. Whilst the communication was easy and good the company refused to accept that the battery was possibly faulty and insisted that it was returned for testing which I accept is the only way. However on the face of it the battery wad fine but wouldn't allow the stop start to work giving the same symptoms as the previous battery. Anyway to cut a long story short the new battery immediately sorted the problem. Did I send it back for testing no couldn't be bothered feeling that I know the answer already.