Thread: High Amp Alt vs. Bigger Cap

true but very false at the same time. adding extra batteries will help with the car off but also give oyu more reserve power. basically once you extra batteries are fullt charged it will take longer for your lights to dim. i have 3 extra batteries (4 total) in my truck and my lights do not dim at all. i am also running a stock 130amp alt. adding extra batteries will help drastically.