In this video I am using LiFePO4 18650 cells to build a better battery for my motorcycle. These batteries last 78 years compared to the 23 of lead acid. I will be replacing all of my motorcycle batteries with these since the performance has been exceptional.

If you want to make one for a car, I suggest 40 cells (4S/10P) and 48 cells (4S/12P) for a truck or large SUV.