Have you tried the batteries before? I'm considering it for mine, but not sure how it'll go as a direct replacement for my car as I use it.... a handful of times per week.Just taken delivery of my Deadweight industries Tonge 500 lightweight battery. It weighs only 3.8kg! A total of 16kg saving over the stock battery Absolutely perfect to reduce some of that weight over the front axle added from the DCT box. The best lb for £ saving around without just removing parts