Bhai I have kept cars having 35 Amp batteries (mehran, khyber) and 100 Amp batteries (Current 1.8 cars come with 45-50 Amp Batteries), battery size doesn't matter for the short amount of time the full capacity of the accessory socket is utilized. My 20 year old khyber is still on genuine accessory fuse, socket and lighter while corolla has sometimes needed it twice a year (sometimes due to audio system overload and sometimes due to faulty phone chargers). Neither the socket nor lighter stop working if kept clean and fuses are changed when burned out.