Purchased car battery early this year and had it fitted at Altrincham branch. Caused major electrical damage to my MC benz resulting in my car being sent back to Mercedes to be fixed. Yes Halfords insurance provided me with a hire car for three weeks but my car has not been the same since. I wrote to the ceo of Halfords by recorded delivery who has not had the courtesy to reply. The battery provided and installed by Halfords was removed by Mercedes as it was unfit and unsuitable for my car. It was replaced by a Mercedes battery. An apology from the ceo would have restored my confidence in Halfords but clearly customer satisfaction is not his priority.